/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loop-acceleration/simple_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:13:31,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:13:31,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:13:31,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:13:31,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:13:31,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:13:31,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:13:31,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:13:31,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:13:31,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:13:31,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:13:31,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:13:31,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:13:32,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:13:32,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:13:32,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:13:32,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:13:32,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:13:32,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:13:32,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:13:32,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:13:32,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:13:32,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:13:32,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:13:32,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:13:32,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:13:32,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:13:32,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:13:32,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:13:32,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:13:32,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:13:32,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:13:32,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:13:32,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:13:32,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:13:32,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:13:32,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:13:32,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:13:32,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:13:32,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:13:32,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:13:32,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 20:13:32,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:13:32,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:13:32,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:13:32,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:13:32,138 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:13:32,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:13:32,139 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:13:32,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:13:32,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:13:32,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:13:32,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:13:32,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:13:32,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:13:32,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:13:32,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:13:32,140 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:13:32,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:13:32,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:13:32,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:13:32,141 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:13:32,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:13:32,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:13:32,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:13:32,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:13:32,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:13:32,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:13:32,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:13:32,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:13:32,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:13:32,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:13:32,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:13:32,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:13:32,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:13:32,538 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:13:32,538 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:13:32,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_1-2.c [2020-10-27 20:13:32,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c2761ac9/4d1ccb7b98444fbaac3e27aa61ce9d28/FLAGf9f600630 [2020-10-27 20:13:33,247 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:13:33,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/simple_1-2.c [2020-10-27 20:13:33,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c2761ac9/4d1ccb7b98444fbaac3e27aa61ce9d28/FLAGf9f600630 [2020-10-27 20:13:33,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c2761ac9/4d1ccb7b98444fbaac3e27aa61ce9d28 [2020-10-27 20:13:33,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:13:33,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:13:33,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:13:33,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:13:33,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:13:33,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:13:33" (1/1) ... [2020-10-27 20:13:33,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33014f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:33, skipping insertion in model container [2020-10-27 20:13:33,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:13:33" (1/1) ... [2020-10-27 20:13:33,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:13:33,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:13:33,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:13:33,853 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:13:33,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:13:33,889 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:13:33,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:33 WrapperNode [2020-10-27 20:13:33,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:13:33,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:13:33,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:13:33,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:13:33,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:33" (1/1) ... [2020-10-27 20:13:33,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:33" (1/1) ... [2020-10-27 20:13:33,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:33" (1/1) ... [2020-10-27 20:13:33,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:33" (1/1) ... [2020-10-27 20:13:33,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:33" (1/1) ... [2020-10-27 20:13:33,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:33" (1/1) ... [2020-10-27 20:13:33,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:33" (1/1) ... [2020-10-27 20:13:33,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:13:33,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:13:33,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:13:33,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:13:33,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:13:34,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:13:34,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:13:34,019 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:13:34,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:13:34,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:13:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:13:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:13:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:13:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:13:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:13:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:13:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:13:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:13:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:13:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:13:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:13:34,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:13:34,298 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:13:34,299 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 20:13:34,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:13:34 BoogieIcfgContainer [2020-10-27 20:13:34,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:13:34,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:13:34,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:13:34,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:13:34,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:13:33" (1/3) ... [2020-10-27 20:13:34,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a390f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:13:34, skipping insertion in model container [2020-10-27 20:13:34,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:33" (2/3) ... [2020-10-27 20:13:34,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a390f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:13:34, skipping insertion in model container [2020-10-27 20:13:34,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:13:34" (3/3) ... [2020-10-27 20:13:34,321 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_1-2.c [2020-10-27 20:13:34,358 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:13:34,369 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:13:34,390 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:13:34,449 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:13:34,450 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:13:34,450 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:13:34,450 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:13:34,450 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:13:34,450 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:13:34,451 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:13:34,451 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:13:34,469 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-27 20:13:34,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 20:13:34,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:13:34,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:13:34,476 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:13:34,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:13:34,483 INFO L82 PathProgramCache]: Analyzing trace with hash 783588435, now seen corresponding path program 1 times [2020-10-27 20:13:34,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:13:34,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822315908] [2020-10-27 20:13:34,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:13:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:13:34,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:34,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:35,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:13:35,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:13:35,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:13:35,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-27 20:13:35,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:13:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:13:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:13:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:13:35,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:13:35,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:13:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:13:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:35,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:13:35,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:13:35,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:13:35,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:13:35,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:13:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:13:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:13:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:13:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:13:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:13:35,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822315908] [2020-10-27 20:13:35,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:13:35,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 20:13:35,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170648213] [2020-10-27 20:13:35,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 20:13:35,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:13:35,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 20:13:35,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:13:35,248 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-10-27 20:13:35,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:13:35,337 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-10-27 20:13:35,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:13:35,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-27 20:13:35,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:13:35,347 INFO L225 Difference]: With dead ends: 34 [2020-10-27 20:13:35,347 INFO L226 Difference]: Without dead ends: 13 [2020-10-27 20:13:35,350 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 [2020-10-27 20:13:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-27 20:13:35,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-27 20:13:35,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-27 20:13:35,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-27 20:13:35,396 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2020-10-27 20:13:35,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:13:35,397 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-27 20:13:35,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 20:13:35,397 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-27 20:13:35,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 20:13:35,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:13:35,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:13:35,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:13:35,399 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:13:35,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:13:35,400 INFO L82 PathProgramCache]: Analyzing trace with hash 669071831, now seen corresponding path program 1 times [2020-10-27 20:13:35,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:13:35,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25947619] [2020-10-27 20:13:35,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:13:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:13:35,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:35,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:35,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:13:35,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:13:35,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:13:35,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-27 20:13:35,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:13:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:13:35,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:13:35,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:13:35,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 20:13:35,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:13:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:13:35,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:35,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:13:35,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:13:35,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:13:35,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:13:35,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:13:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:13:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:13:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:13:35,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:13:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:13:35,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25947619] [2020-10-27 20:13:35,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:13:35,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:13:35,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606783268] [2020-10-27 20:13:35,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:13:35,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:13:35,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:13:35,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:13:35,869 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2020-10-27 20:13:36,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:13:36,003 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-27 20:13:36,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:13:36,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-27 20:13:36,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:13:36,006 INFO L225 Difference]: With dead ends: 20 [2020-10-27 20:13:36,006 INFO L226 Difference]: Without dead ends: 14 [2020-10-27 20:13:36,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:13:36,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-27 20:13:36,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-27 20:13:36,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-27 20:13:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-27 20:13:36,015 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-10-27 20:13:36,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:13:36,016 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-27 20:13:36,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:13:36,016 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-27 20:13:36,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 20:13:36,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:13:36,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:13:36,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:13:36,017 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:13:36,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:13:36,018 INFO L82 PathProgramCache]: Analyzing trace with hash 396678398, now seen corresponding path program 1 times [2020-10-27 20:13:36,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:13:36,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250767593] [2020-10-27 20:13:36,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:13:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:13:36,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:36,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:36,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:13:36,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:13:36,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:13:36,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 20:13:36,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:13:36,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:13:36,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:13:36,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:13:36,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:13:36,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:13:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:13:36,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:36,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:13:36,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:13:36,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:13:36,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:13:36,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:13:36,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:13:36,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:13:36,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:13:36,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:13:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:13:36,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250767593] [2020-10-27 20:13:36,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:13:36,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 20:13:36,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743203942] [2020-10-27 20:13:36,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:13:36,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:13:36,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:13:36,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:13:36,375 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2020-10-27 20:13:36,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:13:36,669 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-27 20:13:36,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:13:36,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-27 20:13:36,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:13:36,670 INFO L225 Difference]: With dead ends: 14 [2020-10-27 20:13:36,670 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 20:13:36,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:13:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 20:13:36,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 20:13:36,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 20:13:36,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 20:13:36,672 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-27 20:13:36,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:13:36,673 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 20:13:36,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:13:36,673 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 20:13:36,673 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 20:13:36,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:13:36,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 20:13:37,021 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 12 [2020-10-27 20:13:37,040 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 20:13:37,041 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 20:13:37,041 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 20:13:37,041 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 20:13:37,042 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:13:37,049 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 20:13:37,050 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:13:37,050 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:13:37,050 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 20:13:37,051 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 20:13:37,051 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:13:37,051 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 12 20) the Hoare annotation is: true [2020-10-27 20:13:37,051 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 12 20) no Hoare annotation was computed. [2020-10-27 20:13:37,052 INFO L270 CegarLoopResult]: At program point L15-2(lines 15 17) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (and (<= 0 main_~x~0) (<= main_~x~0 0))) [2020-10-27 20:13:37,054 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 12 20) no Hoare annotation was computed. [2020-10-27 20:13:37,055 INFO L270 CegarLoopResult]: At program point L15-3(lines 15 17) the Hoare annotation is: (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) [2020-10-27 20:13:37,055 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-27 20:13:37,055 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-27 20:13:37,056 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-27 20:13:37,056 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-27 20:13:37,056 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-27 20:13:37,057 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-27 20:13:37,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:13:37 BoogieIcfgContainer [2020-10-27 20:13:37,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:13:37,107 INFO L168 Benchmark]: Toolchain (without parser) took 3461.03 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 126.7 MB in the beginning and 169.1 MB in the end (delta: -42.4 MB). Peak memory consumption was 79.2 MB. Max. memory is 8.0 GB. [2020-10-27 20:13:37,108 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:13:37,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.63 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 20:13:37,116 INFO L168 Benchmark]: Boogie Preprocessor took 36.92 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 20:13:37,120 INFO L168 Benchmark]: RCFGBuilder took 371.97 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 103.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 20:13:37,122 INFO L168 Benchmark]: TraceAbstraction took 2799.12 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 102.9 MB in the beginning and 169.1 MB in the end (delta: -66.2 MB). Peak memory consumption was 55.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:13:37,133 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 235.63 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.92 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 371.97 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 103.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2799.12 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 102.9 MB in the beginning and 169.1 MB in the end (delta: -66.2 MB). Peak memory consumption was 55.1 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: 15]: Loop Invariant Derived loop invariant: (0 < x / 2 && x <= 2 * (x / 2)) || (0 <= x && x <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 19 SDslu, 43 SDs, 0 SdLazy, 52 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s 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, 74 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 161 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 1924 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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...