/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/loop-invariants/eq1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:17:39,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:17:39,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:17:39,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:17:39,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:17:39,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:17:39,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:17:39,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:17:39,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:17:39,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:17:39,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:17:39,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:17:39,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:17:39,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:17:39,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:17:39,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:17:39,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:17:39,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:17:39,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:17:39,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:17:39,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:17:39,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:17:39,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:17:39,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:17:39,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:17:39,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:17:39,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:17:39,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:17:39,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:17:39,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:17:39,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:17:39,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:17:39,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:17:39,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:17:39,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:17:39,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:17:39,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:17:39,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:17:39,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:17:39,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:17:39,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:17:39,671 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 20:17:39,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:17:39,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:17:39,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:17:39,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:17:39,726 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:17:39,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:17:39,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:17:39,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:17:39,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:17:39,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:17:39,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:17:39,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:17:39,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:17:39,729 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:17:39,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:17:39,730 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:17:39,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:17:39,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:17:39,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:17:39,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:17:39,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:17:39,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:17:39,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:17:39,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:17:39,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:17:39,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:17:39,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:17:39,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:17:39,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:17:39,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:17:40,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:17:40,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:17:40,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:17:40,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:17:40,209 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:17:40,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq1.c [2020-10-27 20:17:40,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/931d7c7b4/14efe004f8af4d7f8940638befd7aafc/FLAGf3004971e [2020-10-27 20:17:41,080 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:17:41,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invariants/eq1.c [2020-10-27 20:17:41,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/931d7c7b4/14efe004f8af4d7f8940638befd7aafc/FLAGf3004971e [2020-10-27 20:17:41,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/931d7c7b4/14efe004f8af4d7f8940638befd7aafc [2020-10-27 20:17:41,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:17:41,428 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:17:41,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:17:41,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:17:41,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:17:41,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:17:41" (1/1) ... [2020-10-27 20:17:41,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b504e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:41, skipping insertion in model container [2020-10-27 20:17:41,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:17:41" (1/1) ... [2020-10-27 20:17:41,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:17:41,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:17:41,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:17:41,654 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:17:41,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:17:41,690 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:17:41,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:41 WrapperNode [2020-10-27 20:17:41,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:17:41,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:17:41,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:17:41,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:17:41,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:41" (1/1) ... [2020-10-27 20:17:41,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:41" (1/1) ... [2020-10-27 20:17:41,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:41" (1/1) ... [2020-10-27 20:17:41,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:41" (1/1) ... [2020-10-27 20:17:41,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:41" (1/1) ... [2020-10-27 20:17:41,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:41" (1/1) ... [2020-10-27 20:17:41,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:41" (1/1) ... [2020-10-27 20:17:41,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:17:41,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:17:41,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:17:41,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:17:41,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:41" (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 20:17:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:17:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:17:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:17:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:17:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:17:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:17:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:17:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:17:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:17:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 20:17:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:17:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:17:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:17:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:17:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:17:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:17:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:17:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:17:42,056 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:17:42,056 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 20:17:42,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:17:42 BoogieIcfgContainer [2020-10-27 20:17:42,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:17:42,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:17:42,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:17:42,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:17:42,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:17:41" (1/3) ... [2020-10-27 20:17:42,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b97d48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:17:42, skipping insertion in model container [2020-10-27 20:17:42,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:41" (2/3) ... [2020-10-27 20:17:42,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b97d48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:17:42, skipping insertion in model container [2020-10-27 20:17:42,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:17:42" (3/3) ... [2020-10-27 20:17:42,068 INFO L111 eAbstractionObserver]: Analyzing ICFG eq1.c [2020-10-27 20:17:42,110 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:17:42,129 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:17:42,146 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:17:42,176 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:17:42,176 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:17:42,176 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:17:42,176 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:17:42,176 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:17:42,176 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:17:42,177 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:17:42,177 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:17:42,196 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-27 20:17:42,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 20:17:42,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:17:42,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:17:42,203 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:17:42,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:17:42,210 INFO L82 PathProgramCache]: Analyzing trace with hash 346045792, now seen corresponding path program 1 times [2020-10-27 20:17:42,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:17:42,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182132027] [2020-10-27 20:17:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:17:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:17:42,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:17:42,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:17:42,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:17:42,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:17:42,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:17:42,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-27 20:17:42,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:17:42,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:17:42,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:17:42,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:17:42,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 20:17:43,172 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-27 20:17:43,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:17:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:17:43,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:17:43,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:17:43,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:17:43,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:17:43,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 20:17:43,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:17:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:17:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:17:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:17:43,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:17:43,236 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 20:17:43,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182132027] [2020-10-27 20:17:43,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:17:43,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 20:17:43,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608673354] [2020-10-27 20:17:43,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 20:17:43,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:17:43,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 20:17:43,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:17:43,266 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-10-27 20:17:43,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:17:43,330 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-10-27 20:17:43,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:17:43,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-27 20:17:43,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:17:43,341 INFO L225 Difference]: With dead ends: 37 [2020-10-27 20:17:43,341 INFO L226 Difference]: Without dead ends: 14 [2020-10-27 20:17:43,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:17:43,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-27 20:17:43,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-27 20:17:43,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-27 20:17:43,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-10-27 20:17:43,392 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2020-10-27 20:17:43,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:17:43,393 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-10-27 20:17:43,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 20:17:43,393 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-10-27 20:17:43,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 20:17:43,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:17:43,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:17:43,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:17:43,395 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:17:43,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:17:43,396 INFO L82 PathProgramCache]: Analyzing trace with hash 59754282, now seen corresponding path program 1 times [2020-10-27 20:17:43,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:17:43,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863130873] [2020-10-27 20:17:43,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:17:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:17:43,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:17:43,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:17:43,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:17:43,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:17:43,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 20:17:43,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:17:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:17:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:17:43,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:17:43,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:17:43,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:17:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:17:43,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:17:43,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:17:43,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:17:43,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:17:43,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 20:17:43,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:17:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:17:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:17:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:17:43,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:17:43,782 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 20:17:43,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863130873] [2020-10-27 20:17:43,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:17:43,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:17:43,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779831554] [2020-10-27 20:17:43,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:17:43,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:17:43,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:17:43,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:17:43,795 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 6 states. [2020-10-27 20:17:44,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:17:44,032 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-10-27 20:17:44,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:17:44,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-27 20:17:44,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:17:44,033 INFO L225 Difference]: With dead ends: 14 [2020-10-27 20:17:44,033 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 20:17:44,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:17:44,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 20:17:44,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 20:17:44,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 20:17:44,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 20:17:44,036 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-27 20:17:44,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:17:44,036 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 20:17:44,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:17:44,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 20:17:44,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 20:17:44,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:17:44,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 20:17:44,231 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 20:17:44,231 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 20:17:44,231 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 20:17:44,232 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 20:17:44,232 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:17:44,232 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 20:17:44,232 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:17:44,232 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:17:44,232 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 20:17:44,233 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 20:17:44,233 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:17:44,233 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 11 25) the Hoare annotation is: true [2020-10-27 20:17:44,233 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 11 25) no Hoare annotation was computed. [2020-10-27 20:17:44,233 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-10-27 20:17:44,233 INFO L274 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2020-10-27 20:17:44,233 INFO L270 CegarLoopResult]: At program point L17-2(lines 16 22) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2020-10-27 20:17:44,234 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 22) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2020-10-27 20:17:44,234 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 11 25) no Hoare annotation was computed. [2020-10-27 20:17:44,234 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-27 20:17:44,234 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-27 20:17:44,234 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-27 20:17:44,234 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-27 20:17:44,235 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-27 20:17:44,235 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-27 20:17:44,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:17:44 BoogieIcfgContainer [2020-10-27 20:17:44,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:17:44,256 INFO L168 Benchmark]: Toolchain (without parser) took 2832.21 ms. Allocated memory is still 159.4 MB. Free memory was 134.8 MB in the beginning and 112.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 8.0 GB. [2020-10-27 20:17:44,257 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 159.4 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:17:44,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.89 ms. Allocated memory is still 159.4 MB. Free memory was 134.3 MB in the beginning and 125.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:17:44,259 INFO L168 Benchmark]: Boogie Preprocessor took 39.64 ms. Allocated memory is still 159.4 MB. Free memory was 125.1 MB in the beginning and 123.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:17:44,261 INFO L168 Benchmark]: RCFGBuilder took 325.91 ms. Allocated memory is still 159.4 MB. Free memory was 123.4 MB in the beginning and 110.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 20:17:44,261 INFO L168 Benchmark]: TraceAbstraction took 2193.88 ms. Allocated memory is still 159.4 MB. Free memory was 110.0 MB in the beginning and 112.8 MB in the end (delta: -2.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:17:44,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 159.4 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 260.89 ms. Allocated memory is still 159.4 MB. Free memory was 134.3 MB in the beginning and 125.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.64 ms. Allocated memory is still 159.4 MB. Free memory was 125.1 MB in the beginning and 123.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 325.91 ms. Allocated memory is still 159.4 MB. Free memory was 123.4 MB in the beginning and 110.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2193.88 ms. Allocated memory is still 159.4 MB. Free memory was 110.0 MB in the beginning and 112.8 MB in the end (delta: -2.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * 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: 16]: Loop Invariant Derived loop invariant: x == w && z == y - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 18 SDslu, 19 SDs, 0 SdLazy, 23 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 13 NumberOfFragments, 54 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 128 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1078 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...