/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-regression/test16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:55:11,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:55:11,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:55:11,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:55:11,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:55:11,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:55:11,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:55:11,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:55:11,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:55:11,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:55:11,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:55:11,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:55:11,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:55:11,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:55:11,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:55:11,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:55:11,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:55:11,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:55:11,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:55:11,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:55:11,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:55:11,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:55:11,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:55:11,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:55:11,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:55:11,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:55:11,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:55:11,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:55:11,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:55:11,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:55:11,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:55:11,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:55:11,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:55:11,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:55:11,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:55:11,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:55:11,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:55:11,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:55:11,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:55:11,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:55:11,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:55:11,701 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 [2020-10-27 19:55:11,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:55:11,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:55:11,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:55:11,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:55:11,731 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:55:11,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:55:11,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:55:11,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:55:11,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:55:11,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:55:11,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:55:11,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:55:11,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:55:11,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:55:11,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:55:11,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:55:11,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:55:11,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:55:11,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:55:11,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:55:11,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:55:11,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:55:11,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:55:11,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:55:11,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:55:11,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:55:11,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:55:11,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:55:11,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:55:11,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:55:12,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:55:12,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:55:12,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:55:12,173 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:55:12,173 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:55:12,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test16.c [2020-10-27 19:55:12,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c364ad1a5/25b474948a5e477faa1c0ccb19dae7b4/FLAGff21441e2 [2020-10-27 19:55:12,922 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:55:12,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test16.c [2020-10-27 19:55:12,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c364ad1a5/25b474948a5e477faa1c0ccb19dae7b4/FLAGff21441e2 [2020-10-27 19:55:13,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c364ad1a5/25b474948a5e477faa1c0ccb19dae7b4 [2020-10-27 19:55:13,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:55:13,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:55:13,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:55:13,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:55:13,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:55:13,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:55:13" (1/1) ... [2020-10-27 19:55:13,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e6e120f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:13, skipping insertion in model container [2020-10-27 19:55:13,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:55:13" (1/1) ... [2020-10-27 19:55:13,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:55:13,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:55:13,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:55:13,553 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:55:13,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:55:13,598 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:55:13,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:13 WrapperNode [2020-10-27 19:55:13,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:55:13,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:55:13,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:55:13,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:55:13,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:13" (1/1) ... [2020-10-27 19:55:13,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:13" (1/1) ... [2020-10-27 19:55:13,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:13" (1/1) ... [2020-10-27 19:55:13,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:13" (1/1) ... [2020-10-27 19:55:13,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:13" (1/1) ... [2020-10-27 19:55:13,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:13" (1/1) ... [2020-10-27 19:55:13,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:13" (1/1) ... [2020-10-27 19:55:13,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:55:13,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:55:13,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:55:13,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:55:13,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:13" (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 [2020-10-27 19:55:13,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:55:13,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:55:13,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:55:13,765 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2020-10-27 19:55:13,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:55:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:55:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:55:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:55:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:55:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2020-10-27 19:55:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:55:13,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:55:13,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:55:13,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:55:13,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:55:13,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:55:13,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:55:14,270 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:55:14,270 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 19:55:14,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:55:14 BoogieIcfgContainer [2020-10-27 19:55:14,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:55:14,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:55:14,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:55:14,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:55:14,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:55:13" (1/3) ... [2020-10-27 19:55:14,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72cb22b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:55:14, skipping insertion in model container [2020-10-27 19:55:14,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:13" (2/3) ... [2020-10-27 19:55:14,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72cb22b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:55:14, skipping insertion in model container [2020-10-27 19:55:14,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:55:14" (3/3) ... [2020-10-27 19:55:14,287 INFO L111 eAbstractionObserver]: Analyzing ICFG test16.c [2020-10-27 19:55:14,301 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:55:14,308 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:55:14,323 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:55:14,363 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:55:14,364 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:55:14,364 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:55:14,364 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:55:14,364 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:55:14,364 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:55:14,365 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:55:14,365 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:55:14,392 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-27 19:55:14,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-27 19:55:14,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:55:14,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:55:14,432 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:55:14,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:55:14,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1765865168, now seen corresponding path program 1 times [2020-10-27 19:55:14,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:55:14,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819657576] [2020-10-27 19:55:14,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:55:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:14,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:15,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:15,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 19:55:15,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:15,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-27 19:55:15,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:15,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:55:15,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:55:15,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:55:15,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:55:15,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:55:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:15,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:15,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:15,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:15,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:15,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 19:55:15,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:15,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:55:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:55:15,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819657576] [2020-10-27 19:55:15,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:55:15,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:55:15,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401736530] [2020-10-27 19:55:15,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:55:15,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:55:15,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:55:15,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:55:15,390 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 6 states. [2020-10-27 19:55:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:55:15,754 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2020-10-27 19:55:15,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:55:15,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-27 19:55:15,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:55:15,769 INFO L225 Difference]: With dead ends: 29 [2020-10-27 19:55:15,769 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 19:55:15,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 19:55:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 19:55:15,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 19:55:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 19:55:15,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 19:55:15,804 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-27 19:55:15,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:55:15,805 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 19:55:15,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:55:15,805 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 19:55:15,805 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 19:55:15,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:55:15,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 19:55:16,108 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 19:55:16,110 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 19:55:16,110 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 19:55:16,110 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 19:55:16,110 INFO L274 CegarLoopResult]: For program point equalEXIT(lines 6 14) no Hoare annotation was computed. [2020-10-27 19:55:16,110 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-27 19:55:16,111 INFO L277 CegarLoopResult]: At program point equalENTRY(lines 6 14) the Hoare annotation is: true [2020-10-27 19:55:16,111 INFO L274 CegarLoopResult]: For program point equalFINAL(lines 6 14) no Hoare annotation was computed. [2020-10-27 19:55:16,111 INFO L270 CegarLoopResult]: At program point L8(lines 6 14) the Hoare annotation is: (or (not (= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) (not (= (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|) (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|)))) [2020-10-27 19:55:16,111 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-27 19:55:16,111 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 19:55:16,112 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~pa~0.base |old(~pa~0.base)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~pb~0.base |old(~pb~0.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-27 19:55:16,113 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 19:55:16,114 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 19:55:16,114 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) [2020-10-27 19:55:16,114 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 19:55:16,115 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 19:55:16,115 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 19 30) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |~#a~0.base|) |~#a~0.offset|) (select (select |old(#memory_int)| |~#b~0.base|) |~#b~0.offset|))) (and (= ~pa~0.base |old(~pa~0.base)|) (= |old(~pa~0.offset)| ~pa~0.offset) (= |old(~pb~0.base)| ~pb~0.base) (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) (= |old(~pb~0.offset)| ~pb~0.offset))) [2020-10-27 19:55:16,116 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 19 30) no Hoare annotation was computed. [2020-10-27 19:55:16,116 INFO L270 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |~#b~0.base|) |~#b~0.offset|) (select (select |old(#memory_int)| |~#a~0.base|) |~#a~0.offset|))) (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|))) [2020-10-27 19:55:16,117 INFO L274 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-10-27 19:55:16,118 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 19 30) no Hoare annotation was computed. [2020-10-27 19:55:16,130 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:16,131 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:16,131 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:16,131 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:16,139 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:16,140 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:16,143 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:16,143 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:16,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:55:16 BoogieIcfgContainer [2020-10-27 19:55:16,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:55:16,153 INFO L168 Benchmark]: Toolchain (without parser) took 2832.65 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 125.8 MB in the beginning and 146.3 MB in the end (delta: -20.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:16,154 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:55:16,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.03 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 116.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:16,159 INFO L168 Benchmark]: Boogie Preprocessor took 60.74 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:16,160 INFO L168 Benchmark]: RCFGBuilder took 610.80 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 101.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:16,161 INFO L168 Benchmark]: TraceAbstraction took 1869.58 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 100.9 MB in the beginning and 146.3 MB in the end (delta: -45.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:55:16,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 275.03 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 116.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.74 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 610.80 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 101.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1869.58 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 100.9 MB in the beginning and 146.3 MB in the end (delta: -45.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant [2020-10-27 19:55:16,188 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:16,190 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:16,190 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:16,190 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:16,192 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:16,193 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:16,193 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:16,193 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: !(unknown-#memory_int-unknown[b][b] == unknown-#memory_int-unknown[a][a]) || !(unknown-#memory_int-unknown[a][a] == unknown-#memory_int-unknown[b][b]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 14 SDslu, 17 SDs, 0 SdLazy, 23 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 8 NumberOfFragments, 155 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 143 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 860 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...