/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:14:27,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:14:27,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:14:27,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:14:27,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:14:27,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:14:27,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:14:27,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:14:27,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:14:27,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:14:27,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:14:27,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:14:27,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:14:27,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:14:27,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:14:27,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:14:27,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:14:27,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:14:27,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:14:27,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:14:27,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:14:27,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:14:27,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:14:27,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:14:27,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:14:27,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:14:27,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:14:27,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:14:27,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:14:27,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:14:27,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:14:27,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:14:27,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:14:27,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:14:27,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:14:27,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:14:27,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:14:27,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:14:27,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:14:27,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:14:27,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:14:27,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 15:14:27,945 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:14:27,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:14:27,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:14:27,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:14:27,948 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:14:27,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:14:27,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:14:27,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:14:27,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:14:27,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:14:27,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:14:27,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:14:27,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:14:27,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:14:27,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:14:27,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:14:27,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:14:27,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:14:27,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:14:27,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:14:27,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:14:27,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:14:27,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:14:27,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:14:27,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:14:27,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:14:27,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:14:27,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:14:27,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:14:27,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:14:28,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:14:28,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:14:28,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:14:28,355 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:14:28,355 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:14:28,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-10-28 15:14:28,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58944011b/34fe6938ee6b4f38b3dcaff1979eefe8/FLAGf99a08ba7 [2020-10-28 15:14:29,112 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:14:29,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-10-28 15:14:29,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58944011b/34fe6938ee6b4f38b3dcaff1979eefe8/FLAGf99a08ba7 [2020-10-28 15:14:29,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58944011b/34fe6938ee6b4f38b3dcaff1979eefe8 [2020-10-28 15:14:29,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:14:29,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:14:29,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:14:29,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:14:29,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:14:29,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:14:29" (1/1) ... [2020-10-28 15:14:29,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5ba39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:29, skipping insertion in model container [2020-10-28 15:14:29,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:14:29" (1/1) ... [2020-10-28 15:14:29,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:14:29,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:14:29,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:14:29,797 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:14:29,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:14:29,836 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:14:29,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:29 WrapperNode [2020-10-28 15:14:29,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:14:29,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:14:29,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:14:29,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:14:29,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:29" (1/1) ... [2020-10-28 15:14:29,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:29" (1/1) ... [2020-10-28 15:14:29,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:29" (1/1) ... [2020-10-28 15:14:29,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:29" (1/1) ... [2020-10-28 15:14:29,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:29" (1/1) ... [2020-10-28 15:14:29,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:29" (1/1) ... [2020-10-28 15:14:29,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:29" (1/1) ... [2020-10-28 15:14:29,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:14:29,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:14:29,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:14:29,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:14:29,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:14:30,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:14:30,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:14:30,005 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:14:30,005 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 15:14:30,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 15:14:30,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:14:30,006 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:14:30,006 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:14:30,006 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:14:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:14:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 15:14:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:14:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-28 15:14:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:14:30,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:14:30,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:14:30,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:14:30,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:14:30,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:14:30,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:14:30,357 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:14:30,358 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 15:14:30,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:14:30 BoogieIcfgContainer [2020-10-28 15:14:30,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:14:30,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:14:30,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:14:30,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:14:30,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:14:29" (1/3) ... [2020-10-28 15:14:30,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e9b1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:14:30, skipping insertion in model container [2020-10-28 15:14:30,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:29" (2/3) ... [2020-10-28 15:14:30,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e9b1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:14:30, skipping insertion in model container [2020-10-28 15:14:30,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:14:30" (3/3) ... [2020-10-28 15:14:30,371 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt3.c [2020-10-28 15:14:30,385 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:14:30,391 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:14:30,409 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:14:30,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:14:30,444 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:14:30,444 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:14:30,444 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:14:30,444 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:14:30,444 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:14:30,445 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:14:30,445 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:14:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-28 15:14:30,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 15:14:30,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:30,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:14:30,471 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:30,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:30,479 INFO L82 PathProgramCache]: Analyzing trace with hash 339025689, now seen corresponding path program 1 times [2020-10-28 15:14:30,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:30,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685166362] [2020-10-28 15:14:30,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:30,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:30,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:31,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:31,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 15:14:31,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:14:31,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-28 15:14:31,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:31,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:14:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 15:14:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:14:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 15:14:31,382 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-28 15:14:31,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:31,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:31,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:31,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:31,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:31,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 15:14:31,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:31,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:31,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:14:31,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:14:31,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:14:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:14:31,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685166362] [2020-10-28 15:14:31,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:14:31,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 15:14:31,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132776383] [2020-10-28 15:14:31,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 15:14:31,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:31,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 15:14:31,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 15:14:31,487 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-10-28 15:14:31,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:31,636 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-10-28 15:14:31,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 15:14:31,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-28 15:14:31,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:31,648 INFO L225 Difference]: With dead ends: 40 [2020-10-28 15:14:31,649 INFO L226 Difference]: Without dead ends: 17 [2020-10-28 15:14:31,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 15:14:31,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-28 15:14:31,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-28 15:14:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-28 15:14:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-10-28 15:14:31,711 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-10-28 15:14:31,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:31,712 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-10-28 15:14:31,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 15:14:31,713 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-10-28 15:14:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 15:14:31,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:31,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:14:31,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:14:31,716 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:31,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:31,717 INFO L82 PathProgramCache]: Analyzing trace with hash -119040727, now seen corresponding path program 1 times [2020-10-28 15:14:31,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:31,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655651062] [2020-10-28 15:14:31,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:31,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:31,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 15:14:31,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 15:14:31,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:31,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:14:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:14:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:14:31,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:32,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:32,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:32,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:32,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:32,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:32,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 15:14:32,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:32,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:32,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:14:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:14:32,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 15:14:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:14:32,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655651062] [2020-10-28 15:14:32,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:14:32,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:14:32,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102062904] [2020-10-28 15:14:32,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:14:32,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:32,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:14:32,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:14:32,162 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 6 states. [2020-10-28 15:14:32,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:32,568 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-10-28 15:14:32,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:14:32,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-28 15:14:32,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:32,572 INFO L225 Difference]: With dead ends: 32 [2020-10-28 15:14:32,572 INFO L226 Difference]: Without dead ends: 19 [2020-10-28 15:14:32,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:14:32,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-28 15:14:32,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-28 15:14:32,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-28 15:14:32,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-10-28 15:14:32,583 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2020-10-28 15:14:32,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:32,584 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-10-28 15:14:32,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:14:32,584 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-10-28 15:14:32,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 15:14:32,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:32,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:14:32,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:14:32,585 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:32,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:32,586 INFO L82 PathProgramCache]: Analyzing trace with hash -849024154, now seen corresponding path program 1 times [2020-10-28 15:14:32,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:32,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511497515] [2020-10-28 15:14:32,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:32,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:32,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:32,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 15:14:32,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:32,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 15:14:32,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:32,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:32,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:14:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:14:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 15:14:32,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 15:14:33,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:33,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:33,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:33,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:33,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:33,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:14:33,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:33,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:14:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:14:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:14:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:14:33,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511497515] [2020-10-28 15:14:33,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:14:33,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 15:14:33,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384301539] [2020-10-28 15:14:33,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:14:33,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:33,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:14:33,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:14:33,034 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 8 states. [2020-10-28 15:14:33,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:33,443 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-10-28 15:14:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:14:33,444 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-10-28 15:14:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:33,444 INFO L225 Difference]: With dead ends: 19 [2020-10-28 15:14:33,445 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 15:14:33,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:14:33,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 15:14:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 15:14:33,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 15:14:33,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 15:14:33,447 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-28 15:14:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:33,447 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 15:14:33,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:14:33,447 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 15:14:33,447 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 15:14:33,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:14:33,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 15:14:33,801 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-28 15:14:33,801 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-28 15:14:33,802 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-28 15:14:33,802 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-28 15:14:33,802 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:14:33,802 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)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-28 15:14:33,803 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:14:33,803 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:14:33,803 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 15:14:33,803 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 15:14:33,803 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:14:33,804 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 5 7) no Hoare annotation was computed. [2020-10-28 15:14:33,804 INFO L274 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-10-28 15:14:33,804 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-10-28 15:14:33,804 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-10-28 15:14:33,804 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 16 36) no Hoare annotation was computed. [2020-10-28 15:14:33,804 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-28 15:14:33,804 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 16 36) no Hoare annotation was computed. [2020-10-28 15:14:33,805 INFO L274 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-10-28 15:14:33,805 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 16 36) the Hoare annotation is: true [2020-10-28 15:14:33,805 INFO L274 CegarLoopResult]: For program point L28(lines 28 31) no Hoare annotation was computed. [2020-10-28 15:14:33,805 INFO L274 CegarLoopResult]: For program point L26(lines 26 31) no Hoare annotation was computed. [2020-10-28 15:14:33,805 INFO L274 CegarLoopResult]: For program point L28-2(lines 26 31) no Hoare annotation was computed. [2020-10-28 15:14:33,806 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 33) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) [2020-10-28 15:14:33,806 INFO L270 CegarLoopResult]: At program point L24-3(lines 24 33) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) [2020-10-28 15:14:33,810 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 13) the Hoare annotation is: true [2020-10-28 15:14:33,810 INFO L270 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-28 15:14:33,810 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 13) no Hoare annotation was computed. [2020-10-28 15:14:33,810 INFO L274 CegarLoopResult]: For program point L9(lines 9 11) no Hoare annotation was computed. [2020-10-28 15:14:33,810 INFO L274 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-10-28 15:14:33,811 INFO L274 CegarLoopResult]: For program point L9-2(lines 8 13) no Hoare annotation was computed. [2020-10-28 15:14:33,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:14:33 BoogieIcfgContainer [2020-10-28 15:14:33,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:14:33,847 INFO L168 Benchmark]: Toolchain (without parser) took 4356.22 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 106.3 MB in the beginning and 153.7 MB in the end (delta: -47.4 MB). Peak memory consumption was 58.5 MB. Max. memory is 8.0 GB. [2020-10-28 15:14:33,848 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:14:33,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.44 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 95.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 15:14:33,854 INFO L168 Benchmark]: Boogie Preprocessor took 38.73 ms. Allocated memory is still 151.0 MB. Free memory was 95.4 MB in the beginning and 94.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 15:14:33,857 INFO L168 Benchmark]: RCFGBuilder took 482.67 ms. Allocated memory is still 151.0 MB. Free memory was 93.9 MB in the beginning and 121.3 MB in the end (delta: -27.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-28 15:14:33,859 INFO L168 Benchmark]: TraceAbstraction took 3479.31 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 121.1 MB in the beginning and 153.7 MB in the end (delta: -32.6 MB). Peak memory consumption was 73.3 MB. Max. memory is 8.0 GB. [2020-10-28 15:14:33,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 338.44 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 95.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.73 ms. Allocated memory is still 151.0 MB. Free memory was 95.4 MB in the beginning and 94.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 482.67 ms. Allocated memory is still 151.0 MB. Free memory was 93.9 MB in the beginning and 121.3 MB in the end (delta: -27.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3479.31 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 121.1 MB in the beginning and 153.7 MB in the end (delta: -32.6 MB). Peak memory consumption was 73.3 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: 24]: Loop Invariant Derived loop invariant: l <= i + j + k && i + j + k <= l - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 44 SDslu, 48 SDs, 0 SdLazy, 103 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 17 PreInvPairs, 21 NumberOfFragments, 68 HoareAnnotationTreeSize, 17 FomulaSimplifications, 59 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 235 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 4410 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...