/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/nested_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:13:04,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:13:04,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:13:04,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:13:04,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:13:04,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:13:04,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:13:04,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:13:04,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:13:04,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:13:04,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:13:04,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:13:04,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:13:04,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:13:05,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:13:05,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:13:05,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:13:05,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:13:05,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:13:05,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:13:05,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:13:05,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:13:05,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:13:05,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:13:05,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:13:05,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:13:05,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:13:05,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:13:05,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:13:05,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:13:05,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:13:05,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:13:05,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:13:05,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:13:05,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:13:05,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:13:05,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:13:05,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:13:05,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:13:05,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:13:05,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:13:05,061 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 20:13:05,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:13:05,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:13:05,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:13:05,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:13:05,116 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:13:05,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:13:05,117 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:13:05,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:13:05,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:13:05,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:13:05,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:13:05,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:13:05,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:13:05,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:13:05,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:13:05,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:13:05,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:13:05,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:13:05,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:13:05,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:13:05,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:13:05,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:13:05,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:13:05,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:13:05,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:13:05,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:13:05,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:13:05,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:13:05,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:13:05,123 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:13:05,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:13:05,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:13:05,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:13:05,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:13:05,570 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:13:05,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/nested_1-1.c [2020-10-27 20:13:05,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/777b127d6/4ea7291f27464c9090b8094223ed678e/FLAG7a5b32efa [2020-10-27 20:13:06,226 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:13:06,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/nested_1-1.c [2020-10-27 20:13:06,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/777b127d6/4ea7291f27464c9090b8094223ed678e/FLAG7a5b32efa [2020-10-27 20:13:06,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/777b127d6/4ea7291f27464c9090b8094223ed678e [2020-10-27 20:13:06,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:13:06,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:13:06,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:13:06,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:13:06,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:13:06,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:13:06" (1/1) ... [2020-10-27 20:13:06,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2572bbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:06, skipping insertion in model container [2020-10-27 20:13:06,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:13:06" (1/1) ... [2020-10-27 20:13:06,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:13:06,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:13:06,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:13:06,887 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:13:06,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:13:06,917 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:13:06,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:06 WrapperNode [2020-10-27 20:13:06,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:13:06,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:13:06,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:13:06,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:13:06,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:06" (1/1) ... [2020-10-27 20:13:06,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:06" (1/1) ... [2020-10-27 20:13:06,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:06" (1/1) ... [2020-10-27 20:13:06,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:06" (1/1) ... [2020-10-27 20:13:06,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:06" (1/1) ... [2020-10-27 20:13:06,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:06" (1/1) ... [2020-10-27 20:13:06,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:06" (1/1) ... [2020-10-27 20:13:06,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:13:06,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:13:06,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:13:06,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:13:06,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:06" (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 20:13:07,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:13:07,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:13:07,038 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:13:07,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:13:07,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:13:07,038 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:13:07,038 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:13:07,038 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:13:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:13:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:13:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:13:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:13:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:13:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:13:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:13:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:13:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:13:07,322 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:13:07,322 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 20:13:07,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:13:07 BoogieIcfgContainer [2020-10-27 20:13:07,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:13:07,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:13:07,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:13:07,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:13:07,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:13:06" (1/3) ... [2020-10-27 20:13:07,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3536589c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:13:07, skipping insertion in model container [2020-10-27 20:13:07,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:06" (2/3) ... [2020-10-27 20:13:07,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3536589c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:13:07, skipping insertion in model container [2020-10-27 20:13:07,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:13:07" (3/3) ... [2020-10-27 20:13:07,379 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_1-1.c [2020-10-27 20:13:07,393 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:13:07,398 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:13:07,413 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:13:07,444 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:13:07,444 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:13:07,444 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:13:07,444 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:13:07,444 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:13:07,445 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:13:07,445 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:13:07,445 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:13:07,464 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-27 20:13:07,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 20:13:07,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:13:07,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:13:07,471 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:13:07,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:13:07,479 INFO L82 PathProgramCache]: Analyzing trace with hash 2005875033, now seen corresponding path program 1 times [2020-10-27 20:13:07,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:13:07,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516476364] [2020-10-27 20:13:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:13:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:13:07,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:07,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:13:07,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:13:07,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:13:07,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 20:13:07,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:13:07,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:13:07,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:13:07,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:13:07,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:13:07,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:13:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:13:07,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:07,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:13:07,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:13:07,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:13:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 20:13:07,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:13:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:13:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:13:07,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:13:07,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:13:07,930 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 20:13:07,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516476364] [2020-10-27 20:13:07,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:13:07,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 20:13:07,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527456506] [2020-10-27 20:13:07,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 20:13:07,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:13:07,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 20:13:07,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:13:07,958 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-10-27 20:13:08,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:13:08,044 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2020-10-27 20:13:08,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:13:08,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-27 20:13:08,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:13:08,055 INFO L225 Difference]: With dead ends: 39 [2020-10-27 20:13:08,056 INFO L226 Difference]: Without dead ends: 15 [2020-10-27 20:13:08,060 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 20:13:08,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-27 20:13:08,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-27 20:13:08,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-27 20:13:08,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-10-27 20:13:08,105 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-10-27 20:13:08,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:13:08,106 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-10-27 20:13:08,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 20:13:08,106 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-10-27 20:13:08,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 20:13:08,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:13:08,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:13:08,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:13:08,108 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:13:08,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:13:08,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1519179466, now seen corresponding path program 1 times [2020-10-27 20:13:08,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:13:08,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596429330] [2020-10-27 20:13:08,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:13:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:13:08,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:08,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:13:08,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:13:08,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:13:08,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 20:13:08,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:13:08,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:13:08,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:13:08,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:13:08,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:13:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:13:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:13:08,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:08,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:13:08,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:13:08,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:13:08,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 20:13:08,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:13:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:13:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:13:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:13:08,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:13:08,414 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 20:13:08,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596429330] [2020-10-27 20:13:08,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:13:08,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:13:08,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18977432] [2020-10-27 20:13:08,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:13:08,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:13:08,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:13:08,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:13:08,419 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2020-10-27 20:13:08,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:13:08,504 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-10-27 20:13:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:13:08,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-27 20:13:08,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:13:08,506 INFO L225 Difference]: With dead ends: 24 [2020-10-27 20:13:08,506 INFO L226 Difference]: Without dead ends: 18 [2020-10-27 20:13:08,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:13:08,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-27 20:13:08,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-10-27 20:13:08,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-27 20:13:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-10-27 20:13:08,517 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2020-10-27 20:13:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:13:08,517 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-10-27 20:13:08,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:13:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-10-27 20:13:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 20:13:08,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:13:08,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:13:08,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:13:08,519 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:13:08,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:13:08,520 INFO L82 PathProgramCache]: Analyzing trace with hash 956003377, now seen corresponding path program 1 times [2020-10-27 20:13:08,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:13:08,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030819107] [2020-10-27 20:13:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:13:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:13:08,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:08,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:08,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:09,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:13:09,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 20:13:09,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:13:09,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-27 20:13:09,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:13:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:13:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:13:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:13:09,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:13:09,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:13:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:13:09,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:13:09,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:13:09,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:13:09,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:13:09,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:13:09,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:13:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:13:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:13:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:13:09,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:13:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:13:09,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030819107] [2020-10-27 20:13:09,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:13:09,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 20:13:09,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947438483] [2020-10-27 20:13:09,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:13:09,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:13:09,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:13:09,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:13:09,393 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 8 states. [2020-10-27 20:13:29,992 WARN L193 SmtUtils]: Spent 16.27 s on a formula simplification that was a NOOP. DAG size: 45 [2020-10-27 20:13:32,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:13:32,206 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-10-27 20:13:32,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 20:13:32,206 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-27 20:13:32,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:13:32,207 INFO L225 Difference]: With dead ends: 16 [2020-10-27 20:13:32,207 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 20:13:32,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=40, Invalid=114, Unknown=2, NotChecked=0, Total=156 [2020-10-27 20:13:32,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 20:13:32,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 20:13:32,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 20:13:32,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 20:13:32,212 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-27 20:13:32,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:13:32,213 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 20:13:32,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:13:32,213 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 20:13:32,213 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 20:13:32,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:13:32,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 20:13:42,418 WARN L193 SmtUtils]: Spent 10.06 s on a formula simplification. DAG size of input: 35 DAG size of output: 15 [2020-10-27 20:13:42,486 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 20:13:42,487 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 20:13:42,487 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 20:13:42,487 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 20:13:42,488 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:13:42,488 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 20:13:42,488 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:13:42,488 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:13:42,489 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 20:13:42,489 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 20:13:42,489 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:13:42,489 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 12 27) no Hoare annotation was computed. [2020-10-27 20:13:42,489 INFO L270 CegarLoopResult]: At program point L19-2(lines 19 21) the Hoare annotation is: (<= main_~x~0 (+ (* 4294967296 (div main_~x~0 4294967296)) 268435454)) [2020-10-27 20:13:42,490 INFO L274 CegarLoopResult]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2020-10-27 20:13:42,490 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 12 27) no Hoare annotation was computed. [2020-10-27 20:13:42,490 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 12 27) the Hoare annotation is: true [2020-10-27 20:13:42,490 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 24) the Hoare annotation is: (<= main_~x~0 (+ (* 4294967296 (div main_~x~0 4294967296)) 268435455)) [2020-10-27 20:13:42,491 INFO L270 CegarLoopResult]: At program point L16-3(lines 16 24) the Hoare annotation is: (and (<= main_~x~0 (+ (* 2 (div (+ main_~x~0 (- 268435455)) 2)) 268435455)) (<= main_~x~0 (+ (* 4294967296 (div main_~x~0 4294967296)) 268435455))) [2020-10-27 20:13:42,491 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-27 20:13:42,491 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-27 20:13:42,491 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (and (not (<= 1 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 1) 0))) [2020-10-27 20:13:42,492 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-27 20:13:42,492 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-27 20:13:42,492 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-27 20:13:42,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:13:42 BoogieIcfgContainer [2020-10-27 20:13:42,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:13:42,515 INFO L168 Benchmark]: Toolchain (without parser) took 35895.96 ms. Allocated memory was 162.5 MB in the beginning and 212.9 MB in the end (delta: 50.3 MB). Free memory was 137.7 MB in the beginning and 139.6 MB in the end (delta: -1.9 MB). Peak memory consumption was 49.7 MB. Max. memory is 8.0 GB. [2020-10-27 20:13:42,516 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 162.5 MB. Free memory is still 117.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:13:42,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.02 ms. Allocated memory is still 162.5 MB. Free memory was 137.1 MB in the beginning and 128.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:13:42,521 INFO L168 Benchmark]: Boogie Preprocessor took 34.76 ms. Allocated memory is still 162.5 MB. Free memory was 128.0 MB in the beginning and 126.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:13:42,523 INFO L168 Benchmark]: RCFGBuilder took 370.69 ms. Allocated memory is still 162.5 MB. Free memory was 126.5 MB in the beginning and 113.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 20:13:42,527 INFO L168 Benchmark]: TraceAbstraction took 35146.87 ms. Allocated memory was 162.5 MB in the beginning and 212.9 MB in the end (delta: 50.3 MB). Free memory was 144.6 MB in the beginning and 139.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 55.3 MB. Max. memory is 8.0 GB. [2020-10-27 20:13:42,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 162.5 MB. Free memory is still 117.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 290.02 ms. Allocated memory is still 162.5 MB. Free memory was 137.1 MB in the beginning and 128.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.76 ms. Allocated memory is still 162.5 MB. Free memory was 128.0 MB in the beginning and 126.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 370.69 ms. Allocated memory is still 162.5 MB. Free memory was 126.5 MB in the beginning and 113.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 35146.87 ms. Allocated memory was 162.5 MB in the beginning and 212.9 MB in the end (delta: 50.3 MB). Free memory was 144.6 MB in the beginning and 139.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 55.3 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: 19]: Loop Invariant Derived loop invariant: x <= 4294967296 * (x / 4294967296) + 268435454 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x <= 4294967296 * (x / 4294967296) + 268435455 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 23.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 10.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 40 SDslu, 37 SDs, 0 SdLazy, 49 SolverSat, 11 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 20.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 16 PreInvPairs, 20 NumberOfFragments, 86 HoareAnnotationTreeSize, 16 FomulaSimplifications, 69 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 220 FormulaSimplificationTreeSizeReductionInter, 10.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 2284 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...