/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s12iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:38:41,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:38:41,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:38:41,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:38:41,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:38:41,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:38:41,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:38:41,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:38:41,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:38:41,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:38:41,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:38:41,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:38:41,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:38:41,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:38:41,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:38:41,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:38:41,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:38:41,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:38:41,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:38:41,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:38:41,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:38:41,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:38:41,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:38:41,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:38:41,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:38:41,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:38:41,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:38:41,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:38:41,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:38:41,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:38:41,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:38:41,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:38:41,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:38:41,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:38:41,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:38:41,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:38:41,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:38:41,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:38:41,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:38:41,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:38:41,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:38:41,585 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 23:38:41,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:38:41,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:38:41,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:38:41,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:38:41,637 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:38:41,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:38:41,638 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:38:41,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:38:41,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:38:41,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:38:41,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:38:41,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:38:41,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:38:41,639 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:38:41,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:38:41,639 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:38:41,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:38:41,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:38:41,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:38:41,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:38:41,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:38:41,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:38:41,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:38:41,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:38:41,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:38:41,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:38:41,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:38:41,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:38:41,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:38:41,643 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=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:38:41,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:38:41,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:38:41,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:38:41,944 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:38:41,945 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:38:41,946 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s12iff.c [2020-08-18 23:38:42,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58a9d6886/71f3c9b6825e48b29118a5a819f9f28d/FLAG1352df1e8 [2020-08-18 23:38:42,499 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:38:42,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s12iff.c [2020-08-18 23:38:42,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58a9d6886/71f3c9b6825e48b29118a5a819f9f28d/FLAG1352df1e8 [2020-08-18 23:38:42,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58a9d6886/71f3c9b6825e48b29118a5a819f9f28d [2020-08-18 23:38:42,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:38:42,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:38:42,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:38:42,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:38:42,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:38:42,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:38:42" (1/1) ... [2020-08-18 23:38:42,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b8a409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:42, skipping insertion in model container [2020-08-18 23:38:42,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:38:42" (1/1) ... [2020-08-18 23:38:42,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:38:42,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:38:43,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:38:43,095 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:38:43,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:38:43,221 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:38:43,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:43 WrapperNode [2020-08-18 23:38:43,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:38:43,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:38:43,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:38:43,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:38:43,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:43" (1/1) ... [2020-08-18 23:38:43,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:43" (1/1) ... [2020-08-18 23:38:43,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:43" (1/1) ... [2020-08-18 23:38:43,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:43" (1/1) ... [2020-08-18 23:38:43,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:43" (1/1) ... [2020-08-18 23:38:43,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:43" (1/1) ... [2020-08-18 23:38:43,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:43" (1/1) ... [2020-08-18 23:38:43,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:38:43,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:38:43,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:38:43,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:38:43,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:43" (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 23:38:43,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:38:43,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:38:43,328 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 23:38:43,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 23:38:43,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:38:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:38:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 23:38:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 23:38:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 23:38:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:38:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:38:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:38:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:38:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:38:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:38:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:38:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:38:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:38:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:38:43,622 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:38:43,623 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-18 23:38:43,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:38:43 BoogieIcfgContainer [2020-08-18 23:38:43,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:38:43,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:38:43,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:38:43,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:38:43,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:38:42" (1/3) ... [2020-08-18 23:38:43,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cf575f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:38:43, skipping insertion in model container [2020-08-18 23:38:43,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:43" (2/3) ... [2020-08-18 23:38:43,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cf575f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:38:43, skipping insertion in model container [2020-08-18 23:38:43,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:38:43" (3/3) ... [2020-08-18 23:38:43,637 INFO L109 eAbstractionObserver]: Analyzing ICFG s12iff.c [2020-08-18 23:38:43,650 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:38:43,658 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:38:43,676 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:38:43,705 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:38:43,705 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:38:43,705 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:38:43,706 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:38:43,706 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:38:43,706 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:38:43,706 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:38:43,706 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:38:43,728 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-08-18 23:38:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 23:38:43,735 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:38:43,736 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] [2020-08-18 23:38:43,737 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:38:43,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:38:43,750 INFO L82 PathProgramCache]: Analyzing trace with hash 2033030480, now seen corresponding path program 1 times [2020-08-18 23:38:43,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:38:43,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168070969] [2020-08-18 23:38:43,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:38:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:44,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:38:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:44,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:38:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:44,085 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 23:38:44,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168070969] [2020-08-18 23:38:44,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:38:44,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:38:44,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768743549] [2020-08-18 23:38:44,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:38:44,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:38:44,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:38:44,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:38:44,113 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-08-18 23:38:44,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:38:44,240 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-08-18 23:38:44,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:38:44,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-18 23:38:44,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:38:44,250 INFO L225 Difference]: With dead ends: 62 [2020-08-18 23:38:44,251 INFO L226 Difference]: Without dead ends: 29 [2020-08-18 23:38:44,254 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 23:38:44,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-18 23:38:44,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-18 23:38:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-18 23:38:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-08-18 23:38:44,291 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 23 [2020-08-18 23:38:44,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:38:44,292 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-08-18 23:38:44,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:38:44,292 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-08-18 23:38:44,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 23:38:44,293 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:38:44,294 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] [2020-08-18 23:38:44,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:38:44,294 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:38:44,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:38:44,295 INFO L82 PathProgramCache]: Analyzing trace with hash 706992569, now seen corresponding path program 1 times [2020-08-18 23:38:44,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:38:44,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13077916] [2020-08-18 23:38:44,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:38:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:44,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:38:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:44,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:38:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:44,411 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 23:38:44,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13077916] [2020-08-18 23:38:44,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:38:44,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:38:44,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834886915] [2020-08-18 23:38:44,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:38:44,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:38:44,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:38:44,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:38:44,416 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-08-18 23:38:44,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:38:44,586 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-08-18 23:38:44,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 23:38:44,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-18 23:38:44,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:38:44,588 INFO L225 Difference]: With dead ends: 51 [2020-08-18 23:38:44,588 INFO L226 Difference]: Without dead ends: 37 [2020-08-18 23:38:44,590 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 [2020-08-18 23:38:44,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-18 23:38:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-08-18 23:38:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-18 23:38:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-08-18 23:38:44,600 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-08-18 23:38:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:38:44,600 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-08-18 23:38:44,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:38:44,601 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-08-18 23:38:44,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-18 23:38:44,602 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:38:44,602 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] [2020-08-18 23:38:44,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:38:44,603 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:38:44,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:38:44,603 INFO L82 PathProgramCache]: Analyzing trace with hash 284203188, now seen corresponding path program 1 times [2020-08-18 23:38:44,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:38:44,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744810352] [2020-08-18 23:38:44,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:38:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 23:38:44,652 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 23:38:44,653 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:38:44,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:38:44,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:38:44 BoogieIcfgContainer [2020-08-18 23:38:44,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:38:44,679 INFO L168 Benchmark]: Toolchain (without parser) took 1821.21 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 103.2 MB in the end (delta: -2.3 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:44,680 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 23:38:44,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.97 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 181.3 MB in the end (delta: -80.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:44,682 INFO L168 Benchmark]: Boogie Preprocessor took 40.92 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 179.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:44,683 INFO L168 Benchmark]: RCFGBuilder took 364.94 ms. Allocated memory is still 202.4 MB. Free memory was 178.7 MB in the beginning and 160.1 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:44,684 INFO L168 Benchmark]: TraceAbstraction took 1046.46 ms. Allocated memory is still 202.4 MB. Free memory was 160.1 MB in the beginning and 103.2 MB in the end (delta: 56.8 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:44,688 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 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 363.97 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 181.3 MB in the end (delta: -80.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.92 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 179.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 364.94 ms. Allocated memory is still 202.4 MB. Free memory was 178.7 MB in the beginning and 160.1 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1046.46 ms. Allocated memory is still 202.4 MB. Free memory was 160.1 MB in the beginning and 103.2 MB in the end (delta: 56.8 MB). Peak memory consumption was 56.8 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; [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 sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i