/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/recursive-simple/id_b3_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:24:05,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:24:05,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:24:05,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:24:05,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:24:05,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:24:05,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:24:05,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:24:05,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:24:05,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:24:05,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:24:05,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:24:05,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:24:05,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:24:05,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:24:05,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:24:05,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:24:05,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:24:05,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:24:05,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:24:05,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:24:05,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:24:05,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:24:05,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:24:05,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:24:05,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:24:05,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:24:05,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:24:05,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:24:05,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:24:05,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:24:05,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:24:05,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:24:05,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:24:05,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:24:05,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:24:05,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:24:05,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:24:05,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:24:05,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:24:05,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:24:05,833 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 [2020-10-28 17:24:05,862 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:24:05,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:24:05,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:24:05,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:24:05,865 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:24:05,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:24:05,865 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:24:05,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:24:05,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:24:05,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:24:05,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:24:05,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:24:05,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:24:05,867 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:24:05,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:24:05,867 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:24:05,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:24:05,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:24:05,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:24:05,868 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:24:05,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:24:05,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:24:05,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:24:05,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:24:05,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:24:05,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:24:05,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:24:05,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:24:05,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:24:05,870 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:24:06,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:24:06,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:24:06,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:24:06,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:24:06,310 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:24:06,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c [2020-10-28 17:24:06,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b190f3309/0452f7491f564533b931ed7e01a7c882/FLAGd0cc04ed5 [2020-10-28 17:24:06,984 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:24:06,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c [2020-10-28 17:24:06,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b190f3309/0452f7491f564533b931ed7e01a7c882/FLAGd0cc04ed5 [2020-10-28 17:24:07,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b190f3309/0452f7491f564533b931ed7e01a7c882 [2020-10-28 17:24:07,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:24:07,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:24:07,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:24:07,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:24:07,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:24:07,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:24:07" (1/1) ... [2020-10-28 17:24:07,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f0d76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:07, skipping insertion in model container [2020-10-28 17:24:07,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:24:07" (1/1) ... [2020-10-28 17:24:07,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:24:07,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:24:07,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:24:07,692 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:24:07,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:24:07,733 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:24:07,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:07 WrapperNode [2020-10-28 17:24:07,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:24:07,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:24:07,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:24:07,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:24:07,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:07" (1/1) ... [2020-10-28 17:24:07,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:07" (1/1) ... [2020-10-28 17:24:07,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:07" (1/1) ... [2020-10-28 17:24:07,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:07" (1/1) ... [2020-10-28 17:24:07,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:07" (1/1) ... [2020-10-28 17:24:07,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:07" (1/1) ... [2020-10-28 17:24:07,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:07" (1/1) ... [2020-10-28 17:24:07,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:24:07,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:24:07,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:24:07,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:24:07,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:07" (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 [2020-10-28 17:24:07,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:24:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:24:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:24:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-28 17:24:07,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:24:07,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:24:07,883 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:24:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:24:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:24:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:24:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-28 17:24:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:24:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:24:07,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:24:07,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:24:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:24:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:24:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:24:08,174 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:24:08,174 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 17:24:08,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:24:08 BoogieIcfgContainer [2020-10-28 17:24:08,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:24:08,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:24:08,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:24:08,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:24:08,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:24:07" (1/3) ... [2020-10-28 17:24:08,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230e942d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:24:08, skipping insertion in model container [2020-10-28 17:24:08,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:07" (2/3) ... [2020-10-28 17:24:08,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230e942d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:24:08, skipping insertion in model container [2020-10-28 17:24:08,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:24:08" (3/3) ... [2020-10-28 17:24:08,186 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b3_o5-2.c [2020-10-28 17:24:08,201 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:24:08,207 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:24:08,230 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:24:08,282 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:24:08,282 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:24:08,282 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:24:08,282 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:24:08,283 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:24:08,283 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:24:08,283 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:24:08,283 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:24:08,302 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-28 17:24:08,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 17:24:08,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:24:08,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:24:08,309 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:24:08,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:24:08,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1397195593, now seen corresponding path program 1 times [2020-10-28 17:24:08,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:24:08,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153341537] [2020-10-28 17:24:08,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:24:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:08,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:08,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:08,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:24:08,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:08,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-28 17:24:08,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:08,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:24:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:24:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:24:08,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:24:08,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:24:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:08,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:08,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:08,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:24:08,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:08,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:24:08,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:08,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:24:08,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:08,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:24:08,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:24:08,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:24:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:08,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:09,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:09,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:24:09,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:09,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:24:09,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:09,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:24:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:24:09,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:24:09,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153341537] [2020-10-28 17:24:09,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:24:09,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:24:09,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108165555] [2020-10-28 17:24:09,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:24:09,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:24:09,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:24:09,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:24:09,057 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-10-28 17:24:09,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:24:09,315 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-28 17:24:09,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:24:09,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-28 17:24:09,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:24:09,327 INFO L225 Difference]: With dead ends: 39 [2020-10-28 17:24:09,327 INFO L226 Difference]: Without dead ends: 21 [2020-10-28 17:24:09,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:24:09,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-28 17:24:09,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-28 17:24:09,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-28 17:24:09,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-28 17:24:09,384 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2020-10-28 17:24:09,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:24:09,385 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-28 17:24:09,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:24:09,385 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-28 17:24:09,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 17:24:09,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:24:09,387 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:24:09,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:24:09,388 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:24:09,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:24:09,389 INFO L82 PathProgramCache]: Analyzing trace with hash -630540429, now seen corresponding path program 1 times [2020-10-28 17:24:09,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:24:09,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305074011] [2020-10-28 17:24:09,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:24:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:09,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:09,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:10,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:10,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:24:10,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:24:10,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-10-28 17:24:10,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:10,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:24:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:24:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:24:10,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:10,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:24:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:10,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:10,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:10,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:24:10,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:10,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:24:10,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:10,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:24:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:24:10,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:10,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:24:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:10,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:10,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:10,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:24:10,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:10,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 17:24:10,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:10,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:24:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:24:10,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:24:10,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:10,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:10,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:10,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:24:10,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:10,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:24:10,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:10,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:24:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:24:10,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 17:24:10,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305074011] [2020-10-28 17:24:10,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:24:10,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:24:10,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242640707] [2020-10-28 17:24:10,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:24:10,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:24:10,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:24:10,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:24:10,190 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2020-10-28 17:24:10,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:24:10,370 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-10-28 17:24:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:24:10,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-28 17:24:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:24:10,372 INFO L225 Difference]: With dead ends: 34 [2020-10-28 17:24:10,372 INFO L226 Difference]: Without dead ends: 25 [2020-10-28 17:24:10,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:24:10,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-28 17:24:10,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-10-28 17:24:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-28 17:24:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-28 17:24:10,383 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 22 [2020-10-28 17:24:10,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:24:10,383 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-28 17:24:10,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:24:10,383 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-28 17:24:10,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 17:24:10,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:24:10,385 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:24:10,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:24:10,385 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:24:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:24:10,386 INFO L82 PathProgramCache]: Analyzing trace with hash 256963252, now seen corresponding path program 1 times [2020-10-28 17:24:10,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:24:10,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198077836] [2020-10-28 17:24:10,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:24:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:10,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:10,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:10,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:24:10,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:10,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 17:24:10,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:10,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:24:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:24:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:24:10,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:24:10,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:24:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:10,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:10,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:24:10,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:10,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:24:10,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:10,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:24:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:24:10,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:10,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:24:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:10,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:10,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:10,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:24:10,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:10,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:24:10,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:10,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:10,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:24:10,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:10,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:24:10,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:10,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:10,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:10,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:10,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:24:10,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:10,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:24:10,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:10,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:10,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:24:10,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:10,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:24:10,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 17:24:10,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198077836] [2020-10-28 17:24:10,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:24:10,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:24:10,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3579776] [2020-10-28 17:24:10,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:24:10,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:24:10,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:24:10,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:24:10,664 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2020-10-28 17:24:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:24:10,821 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-10-28 17:24:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:24:10,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-28 17:24:10,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:24:10,823 INFO L225 Difference]: With dead ends: 23 [2020-10-28 17:24:10,823 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 17:24:10,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:24:10,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 17:24:10,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 17:24:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 17:24:10,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 17:24:10,825 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-28 17:24:10,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:24:10,825 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 17:24:10,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:24:10,826 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 17:24:10,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 17:24:10,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:24:10,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 17:24:10,945 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-28 17:24:10,946 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-28 17:24:10,946 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-28 17:24:10,946 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-28 17:24:10,946 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:24:10,947 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|)) [2020-10-28 17:24:10,947 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:24:10,947 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:24:10,947 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 17:24:10,947 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 17:24:10,947 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:24:10,948 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 13 19) the Hoare annotation is: true [2020-10-28 17:24:10,948 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 19) no Hoare annotation was computed. [2020-10-28 17:24:10,948 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: false [2020-10-28 17:24:10,948 INFO L274 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-10-28 17:24:10,948 INFO L274 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-10-28 17:24:10,948 INFO L277 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-10-28 17:24:10,948 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-28 17:24:10,948 INFO L274 CegarLoopResult]: For program point L16-2(lines 13 19) no Hoare annotation was computed. [2020-10-28 17:24:10,949 INFO L274 CegarLoopResult]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2020-10-28 17:24:10,949 INFO L274 CegarLoopResult]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-28 17:24:10,949 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-10-28 17:24:10,949 INFO L277 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2020-10-28 17:24:10,949 INFO L277 CegarLoopResult]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2020-10-28 17:24:10,949 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-28 17:24:10,949 INFO L274 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-10-28 17:24:10,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 05:24:10 BoogieIcfgContainer [2020-10-28 17:24:10,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 17:24:10,958 INFO L168 Benchmark]: Toolchain (without parser) took 3572.19 ms. Allocated memory was 160.4 MB in the beginning and 198.2 MB in the end (delta: 37.7 MB). Free memory was 135.9 MB in the beginning and 139.8 MB in the end (delta: -3.9 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. [2020-10-28 17:24:10,959 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 160.4 MB. Free memory is still 133.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 17:24:10,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.88 ms. Allocated memory is still 160.4 MB. Free memory was 135.3 MB in the beginning and 126.4 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 17:24:10,961 INFO L168 Benchmark]: Boogie Preprocessor took 56.99 ms. Allocated memory is still 160.4 MB. Free memory was 126.4 MB in the beginning and 125.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 17:24:10,961 INFO L168 Benchmark]: RCFGBuilder took 379.90 ms. Allocated memory is still 160.4 MB. Free memory was 125.0 MB in the beginning and 112.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 17:24:10,962 INFO L168 Benchmark]: TraceAbstraction took 2777.03 ms. Allocated memory was 160.4 MB in the beginning and 198.2 MB in the end (delta: 37.7 MB). Free memory was 112.0 MB in the beginning and 139.8 MB in the end (delta: -27.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 17:24:10,966 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 160.4 MB. Free memory is still 133.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 340.88 ms. Allocated memory is still 160.4 MB. Free memory was 135.3 MB in the beginning and 126.4 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.99 ms. Allocated memory is still 160.4 MB. Free memory was 126.4 MB in the beginning and 125.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 379.90 ms. Allocated memory is still 160.4 MB. Free memory was 125.0 MB in the beginning and 112.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2777.03 ms. Allocated memory was 160.4 MB in the beginning and 198.2 MB in the end (delta: 37.7 MB). Free memory was 112.0 MB in the beginning and 139.8 MB in the end (delta: -27.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 42 SDslu, 73 SDs, 0 SdLazy, 140 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 13 PreInvPairs, 13 NumberOfFragments, 39 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 120 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 3206 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 8/8 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...