/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loop-acceleration/const_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:35:16,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:35:16,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:35:16,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:35:16,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:35:16,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:35:16,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:35:16,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:35:16,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:35:16,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:35:16,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:35:16,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:35:16,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:35:16,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:35:16,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:35:16,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:35:16,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:35:16,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:35:16,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:35:16,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:35:16,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:35:16,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:35:16,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:35:16,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:35:16,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:35:16,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:35:16,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:35:16,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:35:16,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:35:16,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:35:16,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:35:16,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:35:16,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:35:16,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:35:16,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:35:16,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:35:16,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:35:16,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:35:16,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:35:16,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:35:16,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:35:16,881 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 [2020-10-29 09:35:16,911 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:35:16,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:35:16,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:35:16,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:35:16,915 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:35:16,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:35:16,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:35:16,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:35:16,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:35:16,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:35:16,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:35:16,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:35:16,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:35:16,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:35:16,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:35:16,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:35:16,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:35:16,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:35:16,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:35:16,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:35:16,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:35:16,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:35:16,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:35:16,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:35:16,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:35:16,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:35:16,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:35:16,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:35:16,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:35:16,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:35:17,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:35:17,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:35:17,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:35:17,460 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:35:17,461 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:35:17,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/const_1-1.c [2020-10-29 09:35:17,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8f73aec7/6a0d5c38ec274c6fa100d2fea604db84/FLAGab8405550 [2020-10-29 09:35:18,316 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:35:18,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/const_1-1.c [2020-10-29 09:35:18,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8f73aec7/6a0d5c38ec274c6fa100d2fea604db84/FLAGab8405550 [2020-10-29 09:35:18,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8f73aec7/6a0d5c38ec274c6fa100d2fea604db84 [2020-10-29 09:35:18,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:35:18,694 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:35:18,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:35:18,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:35:18,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:35:18,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:35:18" (1/1) ... [2020-10-29 09:35:18,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d5935a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:35:18, skipping insertion in model container [2020-10-29 09:35:18,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:35:18" (1/1) ... [2020-10-29 09:35:18,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:35:18,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:35:18,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:35:18,928 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:35:18,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:35:18,968 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:35:18,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:35:18 WrapperNode [2020-10-29 09:35:18,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:35:18,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:35:18,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:35:18,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:35:18,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:35:18" (1/1) ... [2020-10-29 09:35:18,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:35:18" (1/1) ... [2020-10-29 09:35:18,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:35:18" (1/1) ... [2020-10-29 09:35:18,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:35:18" (1/1) ... [2020-10-29 09:35:19,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:35:18" (1/1) ... [2020-10-29 09:35:19,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:35:18" (1/1) ... [2020-10-29 09:35:19,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:35:18" (1/1) ... [2020-10-29 09:35:19,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:35:19,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:35:19,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:35:19,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:35:19,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:35:18" (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 [2020-10-29 09:35:19,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:35:19,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:35:19,122 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:35:19,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:35:19,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:35:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:35:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:35:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:35:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:35:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:35:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:35:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:35:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:35:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:35:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:35:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:35:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:35:19,708 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:35:19,708 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:35:19,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:35:19 BoogieIcfgContainer [2020-10-29 09:35:19,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:35:19,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:35:19,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:35:19,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:35:19,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:35:18" (1/3) ... [2020-10-29 09:35:19,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71676d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:35:19, skipping insertion in model container [2020-10-29 09:35:19,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:35:18" (2/3) ... [2020-10-29 09:35:19,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71676d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:35:19, skipping insertion in model container [2020-10-29 09:35:19,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:35:19" (3/3) ... [2020-10-29 09:35:19,732 INFO L111 eAbstractionObserver]: Analyzing ICFG const_1-1.c [2020-10-29 09:35:19,750 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:35:19,756 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:35:19,776 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:35:19,824 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:35:19,824 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:35:19,825 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:35:19,825 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:35:19,825 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:35:19,825 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:35:19,825 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:35:19,826 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:35:19,851 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-29 09:35:19,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 09:35:19,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:35:19,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:35:19,864 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:35:19,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:35:19,878 INFO L82 PathProgramCache]: Analyzing trace with hash 783588435, now seen corresponding path program 1 times [2020-10-29 09:35:19,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:35:19,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688352558] [2020-10-29 09:35:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:35:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:35:20,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:35:20,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:35:20,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:35:20,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:35:20,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 09:35:20,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:35:20,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:35:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:35:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:35:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:35:20,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:35:20,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:35:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:35:20,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:35:20,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:35:20,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:35:20,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:35:20,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:35:20,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:35:20,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:35:20,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:35:20,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:35:20,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:35:20,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:35:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:35:20,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688352558] [2020-10-29 09:35:20,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:35:20,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 09:35:20,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130506100] [2020-10-29 09:35:20,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 09:35:20,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:35:20,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 09:35:20,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 09:35:20,465 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-10-29 09:35:20,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:35:20,544 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-10-29 09:35:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:35:20,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-29 09:35:20,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:35:20,556 INFO L225 Difference]: With dead ends: 34 [2020-10-29 09:35:20,556 INFO L226 Difference]: Without dead ends: 13 [2020-10-29 09:35:20,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 09:35:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-29 09:35:20,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-29 09:35:20,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-29 09:35:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-29 09:35:20,612 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2020-10-29 09:35:20,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:35:20,613 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-29 09:35:20,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 09:35:20,614 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-29 09:35:20,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 09:35:20,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:35:20,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:35:20,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:35:20,616 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:35:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:35:20,617 INFO L82 PathProgramCache]: Analyzing trace with hash 669071831, now seen corresponding path program 1 times [2020-10-29 09:35:20,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:35:20,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702371327] [2020-10-29 09:35:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:35:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:35:20,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:35:20,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:35:20,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:35:20,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:35:20,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 09:35:20,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:35:20,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:35:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:35:20,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:35:20,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:35:20,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:35:20,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:35:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:35:20,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:35:20,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:35:20,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:35:20,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:35:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:35:20,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:35:20,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:35:20,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:35:20,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:35:20,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:35:20,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:35:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:35:20,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702371327] [2020-10-29 09:35:20,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:35:20,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:35:20,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674643616] [2020-10-29 09:35:20,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:35:20,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:35:20,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:35:20,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:35:20,947 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-10-29 09:35:21,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:35:21,046 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-29 09:35:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:35:21,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-29 09:35:21,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:35:21,048 INFO L225 Difference]: With dead ends: 20 [2020-10-29 09:35:21,048 INFO L226 Difference]: Without dead ends: 14 [2020-10-29 09:35:21,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:35:21,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-29 09:35:21,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-29 09:35:21,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-29 09:35:21,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-29 09:35:21,063 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-10-29 09:35:21,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:35:21,064 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-29 09:35:21,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:35:21,064 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-29 09:35:21,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-29 09:35:21,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:35:21,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:35:21,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:35:21,066 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:35:21,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:35:21,067 INFO L82 PathProgramCache]: Analyzing trace with hash 396678398, now seen corresponding path program 1 times [2020-10-29 09:35:21,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:35:21,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364749760] [2020-10-29 09:35:21,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:35:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:35:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:35:21,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:35:21,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:35:21,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:35:21,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:35:21,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-29 09:35:21,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:35:21,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:35:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:35:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:35:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:35:21,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:35:21,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:35:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:35:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:35:21,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:35:21,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:35:21,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:35:21,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:35:21,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:35:21,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:35:21,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:35:21,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:35:21,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:35:21,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:35:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:35:21,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364749760] [2020-10-29 09:35:21,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:35:21,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:35:21,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945451074] [2020-10-29 09:35:21,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:35:21,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:35:21,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:35:21,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:35:21,471 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2020-10-29 09:35:21,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:35:21,597 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-29 09:35:21,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:35:21,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-29 09:35:21,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:35:21,598 INFO L225 Difference]: With dead ends: 14 [2020-10-29 09:35:21,598 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:35:21,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:35:21,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:35:21,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:35:21,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:35:21,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:35:21,600 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-29 09:35:21,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:35:21,600 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:35:21,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:35:21,601 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:35:21,601 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:35:21,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:35:21,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:35:21,823 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-29 09:35:21,824 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-29 09:35:21,824 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-29 09:35:21,824 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-29 09:35:21,824 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:35:21,824 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|)) [2020-10-29 09:35:21,825 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:35:21,825 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:35:21,825 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 09:35:21,825 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:35:21,825 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:35:21,825 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 12 22) the Hoare annotation is: true [2020-10-29 09:35:21,825 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 12 22) no Hoare annotation was computed. [2020-10-29 09:35:21,826 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 19) the Hoare annotation is: (or (and (<= main_~y~0 0) (<= 0 main_~y~0)) (and (<= 0 main_~x~0) (<= main_~x~0 (* 4294967296 (div main_~x~0 4294967296))))) [2020-10-29 09:35:21,826 INFO L270 CegarLoopResult]: At program point L16-3(lines 16 19) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 (* 4294967296 (div main_~x~0 4294967296)))) [2020-10-29 09:35:21,826 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 12 22) no Hoare annotation was computed. [2020-10-29 09:35:21,826 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-29 09:35:21,826 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-29 09:35:21,826 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-29 09:35:21,827 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-29 09:35:21,827 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-29 09:35:21,827 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-29 09:35:21,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:35:21 BoogieIcfgContainer [2020-10-29 09:35:21,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:35:21,848 INFO L168 Benchmark]: Toolchain (without parser) took 3157.86 ms. Allocated memory was 125.8 MB in the beginning and 153.1 MB in the end (delta: 27.3 MB). Free memory was 101.2 MB in the beginning and 118.0 MB in the end (delta: -16.8 MB). Peak memory consumption was 60.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:35:21,849 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:35:21,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.26 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 91.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:35:21,851 INFO L168 Benchmark]: Boogie Preprocessor took 45.17 ms. Allocated memory is still 125.8 MB. Free memory was 91.5 MB in the beginning and 90.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:35:21,852 INFO L168 Benchmark]: RCFGBuilder took 695.44 ms. Allocated memory is still 125.8 MB. Free memory was 90.1 MB in the beginning and 78.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:35:21,853 INFO L168 Benchmark]: TraceAbstraction took 2127.35 ms. Allocated memory was 125.8 MB in the beginning and 153.1 MB in the end (delta: 27.3 MB). Free memory was 77.6 MB in the beginning and 118.0 MB in the end (delta: -40.4 MB). Peak memory consumption was 36.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:35:21,857 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 268.26 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 91.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.17 ms. Allocated memory is still 125.8 MB. Free memory was 91.5 MB in the beginning and 90.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 695.44 ms. Allocated memory is still 125.8 MB. Free memory was 90.1 MB in the beginning and 78.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2127.35 ms. Allocated memory was 125.8 MB in the beginning and 153.1 MB in the end (delta: 27.3 MB). Free memory was 77.6 MB in the beginning and 118.0 MB in the end (delta: -40.4 MB). Peak memory consumption was 36.3 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: 16]: Loop Invariant Derived loop invariant: (y <= 0 && 0 <= y) || (0 <= x && x <= 4294967296 * (x / 4294967296)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 20 SDslu, 27 SDs, 0 SdLazy, 29 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 15 PreInvPairs, 17 NumberOfFragments, 70 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 158 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 1760 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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...