/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=SHALLOWEST --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/test05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:13:50,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:13:50,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:13:50,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:13:50,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:13:50,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:13:50,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:13:50,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:13:50,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:13:50,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:13:50,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:13:50,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:13:50,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:13:50,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:13:50,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:13:50,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:13:50,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:13:50,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:13:50,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:13:50,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:13:50,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:13:50,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:13:50,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:13:50,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:13:50,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:13:50,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:13:50,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:13:50,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:13:50,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:13:50,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:13:50,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:13:50,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:13:50,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:13:50,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:13:50,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:13:50,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:13:50,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:13:50,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:13:50,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:13:50,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:13:50,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:13:50,678 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 01:13:50,731 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:13:50,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:13:50,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:13:50,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:13:50,737 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:13:50,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:13:50,738 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:13:50,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:13:50,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:13:50,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:13:50,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:13:50,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:13:50,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:13:50,740 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:13:50,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:13:50,741 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:13:50,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:13:50,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:13:50,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:13:50,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:13:50,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:13:50,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:13:50,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:13:50,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:13:50,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:13:50,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:13:50,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:13:50,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:13:50,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:13:50,744 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:13:51,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:13:51,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:13:51,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:13:51,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:13:51,243 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:13:51,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test05.c [2020-10-27 01:13:51,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c1c78163/c136e0c7d5b34545a666e34f9de12d85/FLAG5e3cdfa7c [2020-10-27 01:13:51,967 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:13:51,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test05.c [2020-10-27 01:13:51,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c1c78163/c136e0c7d5b34545a666e34f9de12d85/FLAG5e3cdfa7c [2020-10-27 01:13:52,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c1c78163/c136e0c7d5b34545a666e34f9de12d85 [2020-10-27 01:13:52,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:13:52,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:13:52,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:13:52,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:13:52,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:13:52,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:13:52" (1/1) ... [2020-10-27 01:13:52,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@550ad829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:52, skipping insertion in model container [2020-10-27 01:13:52,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:13:52" (1/1) ... [2020-10-27 01:13:52,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:13:52,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:13:52,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:13:52,689 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:13:52,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:13:52,726 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:13:52,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:52 WrapperNode [2020-10-27 01:13:52,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:13:52,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:13:52,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:13:52,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:13:52,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:52" (1/1) ... [2020-10-27 01:13:52,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:52" (1/1) ... [2020-10-27 01:13:52,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:52" (1/1) ... [2020-10-27 01:13:52,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:52" (1/1) ... [2020-10-27 01:13:52,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:52" (1/1) ... [2020-10-27 01:13:52,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:52" (1/1) ... [2020-10-27 01:13:52,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:52" (1/1) ... [2020-10-27 01:13:52,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:13:52,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:13:52,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:13:52,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:13:52,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:52" (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 01:13:52,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:13:52,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:13:52,853 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:13:52,854 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-10-27 01:13:52,854 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-27 01:13:52,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:13:52,854 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:13:52,854 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:13:52,855 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:13:52,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:13:52,855 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-10-27 01:13:52,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:13:52,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:13:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:13:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-27 01:13:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:13:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:13:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:13:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:13:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:13:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:13:53,294 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:13:53,294 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 01:13:53,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:13:53 BoogieIcfgContainer [2020-10-27 01:13:53,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:13:53,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:13:53,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:13:53,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:13:53,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:13:52" (1/3) ... [2020-10-27 01:13:53,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a049848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:13:53, skipping insertion in model container [2020-10-27 01:13:53,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:52" (2/3) ... [2020-10-27 01:13:53,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a049848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:13:53, skipping insertion in model container [2020-10-27 01:13:53,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:13:53" (3/3) ... [2020-10-27 01:13:53,306 INFO L111 eAbstractionObserver]: Analyzing ICFG test05.c [2020-10-27 01:13:53,318 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:13:53,323 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:13:53,336 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:13:53,361 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:13:53,362 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:13:53,362 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:13:53,362 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:13:53,362 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:13:53,362 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:13:53,363 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:13:53,363 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:13:53,380 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-27 01:13:53,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 01:13:53,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:53,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:13:53,388 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:53,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:53,394 INFO L82 PathProgramCache]: Analyzing trace with hash -2038116802, now seen corresponding path program 1 times [2020-10-27 01:13:53,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:53,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636956221] [2020-10-27 01:13:53,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:53,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:53,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:53,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:13:53,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:53,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-27 01:13:53,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:53,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:13:53,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:13:53,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:13:53,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:13:54,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:13:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:54,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:54,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:54,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:54,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:54,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:13:54,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:13:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:13:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:54,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:13:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:54,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:54,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:54,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:13:54,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:54,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 01:13:54,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:54,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:13:54,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:13:54,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:13:54,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:13:54,284 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 01:13:54,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636956221] [2020-10-27 01:13:54,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:13:54,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 01:13:54,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457085137] [2020-10-27 01:13:54,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:13:54,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:54,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:13:54,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:13:54,316 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 7 states. [2020-10-27 01:13:54,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:13:54,828 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-10-27 01:13:54,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:13:54,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-27 01:13:54,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:13:54,838 INFO L225 Difference]: With dead ends: 41 [2020-10-27 01:13:54,838 INFO L226 Difference]: Without dead ends: 22 [2020-10-27 01:13:54,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:13:54,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-27 01:13:54,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-27 01:13:54,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-27 01:13:54,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-27 01:13:54,883 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2020-10-27 01:13:54,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:13:54,884 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-27 01:13:54,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:13:54,884 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-27 01:13:54,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 01:13:54,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:54,885 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] [2020-10-27 01:13:54,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:13:54,886 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:54,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:54,887 INFO L82 PathProgramCache]: Analyzing trace with hash -196382947, now seen corresponding path program 1 times [2020-10-27 01:13:54,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:54,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195794914] [2020-10-27 01:13:54,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:54,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:55,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:55,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 01:13:55,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:55,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-27 01:13:55,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:55,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:13:55,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 01:13:55,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:13:55,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:55,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:13:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:55,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:55,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:55,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:55,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:55,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:13:55,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:13:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:13:55,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:55,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:13:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:55,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:55,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:55,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 01:13:55,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:55,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 01:13:55,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:55,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:13:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 01:13:55,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:13:55,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:13:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:55,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:55,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:55,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:55,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:55,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:13:55,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:13:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:13:55,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:55,591 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 01:13:55,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195794914] [2020-10-27 01:13:55,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:13:55,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 01:13:55,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341467160] [2020-10-27 01:13:55,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:13:55,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:55,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:13:55,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:13:55,595 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2020-10-27 01:13:55,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:13:55,855 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-10-27 01:13:55,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:13:55,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-27 01:13:55,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:13:55,857 INFO L225 Difference]: With dead ends: 25 [2020-10-27 01:13:55,857 INFO L226 Difference]: Without dead ends: 22 [2020-10-27 01:13:55,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:13:55,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-27 01:13:55,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-27 01:13:55,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-27 01:13:55,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-10-27 01:13:55,866 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 20 [2020-10-27 01:13:55,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:13:55,867 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-10-27 01:13:55,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:13:55,867 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-10-27 01:13:55,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 01:13:55,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:55,868 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] [2020-10-27 01:13:55,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:13:55,869 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:55,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:55,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1792857716, now seen corresponding path program 1 times [2020-10-27 01:13:55,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:55,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467382838] [2020-10-27 01:13:55,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:55,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:56,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:56,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 01:13:56,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:56,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-27 01:13:56,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:13:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:13:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:13:56,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:56,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:13:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:56,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:56,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:56,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:56,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:56,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:13:56,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:56,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:13:56,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:56,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:13:56,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:56,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:13:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:56,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:56,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:56,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 01:13:56,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:56,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 01:13:56,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:13:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:13:56,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:56,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:13:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:56,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:56,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:56,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:56,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:56,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 01:13:56,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:13:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:13:56,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:56,867 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 01:13:56,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467382838] [2020-10-27 01:13:56,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:13:56,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 01:13:56,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561331157] [2020-10-27 01:13:56,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 01:13:56,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:56,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 01:13:56,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:13:56,874 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 11 states. [2020-10-27 01:13:57,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:13:57,303 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-10-27 01:13:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 01:13:57,303 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-27 01:13:57,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:13:57,304 INFO L225 Difference]: With dead ends: 22 [2020-10-27 01:13:57,304 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 01:13:57,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-27 01:13:57,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 01:13:57,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 01:13:57,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 01:13:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 01:13:57,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-27 01:13:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:13:57,306 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 01:13:57,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 01:13:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 01:13:57,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 01:13:57,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:13:57,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 01:13:57,574 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 01:13:57,574 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 01:13:57,574 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 01:13:57,574 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 01:13:57,575 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:13:57,575 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |#t~string5.base| |old(#t~string5.base)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 01:13:57,575 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:13:57,575 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (or (< 3 f_~a) (<= |f_#in~a| f_~a)) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (or (<= f_~a 4) (<= f_~a |f_#in~a|)) (= |f_#in~p2.base| f_~p2.base) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= f_~p1.offset |f_#in~p1.offset|) (= |f_#in~p1.base| f_~p1.base) (= f_~p2.offset |f_#in~p2.offset|)) [2020-10-27 01:13:57,576 INFO L274 CegarLoopResult]: For program point L14(lines 14 19) no Hoare annotation was computed. [2020-10-27 01:13:57,576 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-27 01:13:57,576 INFO L274 CegarLoopResult]: For program point fEXIT(lines 13 20) no Hoare annotation was computed. [2020-10-27 01:13:57,576 INFO L270 CegarLoopResult]: At program point fENTRY(lines 13 20) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2020-10-27 01:13:57,576 INFO L274 CegarLoopResult]: For program point fFINAL(lines 13 20) no Hoare annotation was computed. [2020-10-27 01:13:57,576 INFO L274 CegarLoopResult]: For program point gEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-27 01:13:57,576 INFO L274 CegarLoopResult]: For program point gFINAL(lines 6 11) no Hoare annotation was computed. [2020-10-27 01:13:57,577 INFO L270 CegarLoopResult]: At program point gENTRY(lines 6 11) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2020-10-27 01:13:57,577 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:13:57,577 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 01:13:57,577 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 01:13:57,577 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:13:57,577 INFO L274 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-10-27 01:13:57,577 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 22 48) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-27 01:13:57,577 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 22 48) no Hoare annotation was computed. [2020-10-27 01:13:57,578 INFO L274 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-10-27 01:13:57,578 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 22 48) no Hoare annotation was computed. [2020-10-27 01:13:57,578 INFO L270 CegarLoopResult]: At program point L41(lines 22 48) the Hoare annotation is: false [2020-10-27 01:13:57,578 INFO L274 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-10-27 01:13:57,578 INFO L274 CegarLoopResult]: For program point L36(lines 36 38) no Hoare annotation was computed. [2020-10-27 01:13:57,578 INFO L270 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |main_~#p2~0.base|) |main_~#p2~0.offset|))) (and (not (= .cse0 |main_~#a~0.base|)) (= |main_#t~mem11| 4) (not (= |main_~#p2~0.base| |main_~#a~0.base|)) (not (= |main_~#p1~0.base| |main_~#a~0.base|)) (not (= .cse0 |main_~#p1~0.base|)))) [2020-10-27 01:13:57,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:13:57 BoogieIcfgContainer [2020-10-27 01:13:57,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:13:57,593 INFO L168 Benchmark]: Toolchain (without parser) took 5221.54 ms. Allocated memory was 172.0 MB in the beginning and 216.0 MB in the end (delta: 44.0 MB). Free memory was 147.0 MB in the beginning and 152.3 MB in the end (delta: -5.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:13:57,594 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 172.0 MB. Free memory was 144.3 MB in the beginning and 144.3 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:13:57,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.16 ms. Allocated memory is still 172.0 MB. Free memory was 146.3 MB in the beginning and 136.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:13:57,596 INFO L168 Benchmark]: Boogie Preprocessor took 38.20 ms. Allocated memory is still 172.0 MB. Free memory was 136.8 MB in the beginning and 135.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:13:57,597 INFO L168 Benchmark]: RCFGBuilder took 519.08 ms. Allocated memory is still 172.0 MB. Free memory was 135.2 MB in the beginning and 149.7 MB in the end (delta: -14.5 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:13:57,598 INFO L168 Benchmark]: TraceAbstraction took 4292.19 ms. Allocated memory was 172.0 MB in the beginning and 216.0 MB in the end (delta: 44.0 MB). Free memory was 149.7 MB in the beginning and 152.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. [2020-10-27 01:13:57,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 172.0 MB. Free memory was 144.3 MB in the beginning and 144.3 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.16 ms. Allocated memory is still 172.0 MB. Free memory was 146.3 MB in the beginning and 136.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.20 ms. Allocated memory is still 172.0 MB. Free memory was 136.8 MB in the beginning and 135.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 519.08 ms. Allocated memory is still 172.0 MB. Free memory was 135.2 MB in the beginning and 149.7 MB in the end (delta: -14.5 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4292.19 ms. Allocated memory was 172.0 MB in the beginning and 216.0 MB in the end (delta: 44.0 MB). Free memory was 149.7 MB in the beginning and 152.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 41.9 MB. 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: 22]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 38 SDslu, 86 SDs, 0 SdLazy, 241 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 12 NumberOfFragments, 135 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 123 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 9411 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...