/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=SHALLOWEST --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-lit/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:42:14,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:42:14,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:42:14,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:42:14,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:42:14,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:42:14,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:42:14,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:42:14,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:42:14,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:42:14,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:42:14,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:42:14,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:42:14,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:42:14,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:42:14,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:42:14,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:42:14,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:42:14,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:42:14,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:42:14,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:42:14,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:42:14,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:42:14,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:42:14,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:42:14,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:42:14,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:42:14,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:42:14,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:42:14,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:42:14,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:42:14,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:42:14,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:42:14,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:42:14,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:42:14,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:42:14,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:42:14,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:42:14,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:42:14,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:42:14,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:42:14,878 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 01:42:14,934 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:42:14,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:42:14,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:42:14,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:42:14,939 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:42:14,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:42:14,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:42:14,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:42:14,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:42:14,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:42:14,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:42:14,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:42:14,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:42:14,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:42:14,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:42:14,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:42:14,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:42:14,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:42:14,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:42:14,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:42:14,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:42:14,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:42:14,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:42:14,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:42:14,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:42:14,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:42:14,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:42:14,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:42:14,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:42:14,945 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:42:15,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:42:15,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:42:15,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:42:15,365 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:42:15,366 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:42:15,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-10-27 01:42:15,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9c1096c3/a6aa1b93afa64ba1a8d3789fdfe5e8f7/FLAG4a6de5a8b [2020-10-27 01:42:16,161 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:42:16,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-10-27 01:42:16,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9c1096c3/a6aa1b93afa64ba1a8d3789fdfe5e8f7/FLAG4a6de5a8b [2020-10-27 01:42:16,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9c1096c3/a6aa1b93afa64ba1a8d3789fdfe5e8f7 [2020-10-27 01:42:16,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:42:16,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:42:16,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:42:16,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:42:16,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:42:16,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:42:16" (1/1) ... [2020-10-27 01:42:16,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fddb25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:16, skipping insertion in model container [2020-10-27 01:42:16,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:42:16" (1/1) ... [2020-10-27 01:42:16,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:42:16,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:42:16,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:42:16,735 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:42:16,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:42:16,769 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:42:16,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:16 WrapperNode [2020-10-27 01:42:16,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:42:16,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:42:16,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:42:16,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:42:16,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:16" (1/1) ... [2020-10-27 01:42:16,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:16" (1/1) ... [2020-10-27 01:42:16,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:16" (1/1) ... [2020-10-27 01:42:16,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:16" (1/1) ... [2020-10-27 01:42:16,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:16" (1/1) ... [2020-10-27 01:42:16,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:16" (1/1) ... [2020-10-27 01:42:16,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:16" (1/1) ... [2020-10-27 01:42:16,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:42:16,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:42:16,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:42:16,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:42:16,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:16" (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 01:42:16,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:42:16,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:42:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:42:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 01:42:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 01:42:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:42:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:42:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:42:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:42:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:42:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:42:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:42:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 01:42:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:42:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:42:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:42:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:42:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:42:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:42:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:42:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:42:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:42:17,174 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:42:17,174 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 01:42:17,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:42:17 BoogieIcfgContainer [2020-10-27 01:42:17,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:42:17,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:42:17,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:42:17,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:42:17,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:42:16" (1/3) ... [2020-10-27 01:42:17,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a19a842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:42:17, skipping insertion in model container [2020-10-27 01:42:17,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:16" (2/3) ... [2020-10-27 01:42:17,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a19a842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:42:17, skipping insertion in model container [2020-10-27 01:42:17,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:42:17" (3/3) ... [2020-10-27 01:42:17,188 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2020-10-27 01:42:17,217 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:42:17,223 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:42:17,240 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:42:17,273 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:42:17,274 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:42:17,274 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:42:17,274 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:42:17,274 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:42:17,275 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:42:17,275 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:42:17,275 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:42:17,297 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-27 01:42:17,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 01:42:17,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:42:17,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:42:17,306 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:42:17,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:42:17,314 INFO L82 PathProgramCache]: Analyzing trace with hash 122907967, now seen corresponding path program 1 times [2020-10-27 01:42:17,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:42:17,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930110072] [2020-10-27 01:42:17,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:42:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:42:17,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:42:17,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:42:17,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 01:42:17,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:42:17,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-27 01:42:17,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:42:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:42:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:42:17,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:42:17,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 01:42:18,152 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2020-10-27 01:42:18,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:42:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:42:18,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:42:18,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:42:18,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:42:18,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:42:18,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:42:18,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:42:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:42:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:42:18,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:42:18,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 01:42:18,438 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 01:42:18,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930110072] [2020-10-27 01:42:18,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:42:18,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 01:42:18,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272630502] [2020-10-27 01:42:18,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:42:18,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:42:18,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:42:18,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:42:18,476 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 8 states. [2020-10-27 01:42:18,807 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-27 01:42:19,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:42:19,163 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2020-10-27 01:42:19,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:42:19,165 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-10-27 01:42:19,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:42:19,173 INFO L225 Difference]: With dead ends: 55 [2020-10-27 01:42:19,173 INFO L226 Difference]: Without dead ends: 18 [2020-10-27 01:42:19,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:42:19,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-27 01:42:19,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-27 01:42:19,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-27 01:42:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-27 01:42:19,218 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2020-10-27 01:42:19,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:42:19,218 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-27 01:42:19,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:42:19,219 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-27 01:42:19,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 01:42:19,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:42:19,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:42:19,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:42:19,220 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:42:19,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:42:19,221 INFO L82 PathProgramCache]: Analyzing trace with hash 511704539, now seen corresponding path program 1 times [2020-10-27 01:42:19,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:42:19,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807014107] [2020-10-27 01:42:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:42:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:42:19,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:42:19,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:42:19,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 01:42:19,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:42:19,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 01:42:19,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:42:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:42:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:42:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:42:19,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:42:19,673 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-10-27 01:42:19,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:42:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:42:19,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:42:19,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:42:19,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:42:19,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:42:19,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:42:19,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:42:19,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:42:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:42:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:42:19,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:42:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:42:19,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807014107] [2020-10-27 01:42:19,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:42:19,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:42:19,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967580179] [2020-10-27 01:42:19,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:42:19,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:42:19,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:42:19,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:42:19,814 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 9 states. [2020-10-27 01:42:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:42:20,194 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-10-27 01:42:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:42:20,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-27 01:42:20,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:42:20,196 INFO L225 Difference]: With dead ends: 27 [2020-10-27 01:42:20,196 INFO L226 Difference]: Without dead ends: 19 [2020-10-27 01:42:20,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:42:20,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-27 01:42:20,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-27 01:42:20,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-27 01:42:20,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-27 01:42:20,204 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2020-10-27 01:42:20,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:42:20,204 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-27 01:42:20,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:42:20,205 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-27 01:42:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 01:42:20,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:42:20,206 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:42:20,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:42:20,206 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:42:20,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:42:20,207 INFO L82 PathProgramCache]: Analyzing trace with hash -320503617, now seen corresponding path program 2 times [2020-10-27 01:42:20,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:42:20,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027603807] [2020-10-27 01:42:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:42:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:42:20,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:42:20,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:42:20,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 01:42:20,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:42:20,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 01:42:20,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:42:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:42:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:42:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:42:20,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:42:20,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:42:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:42:20,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:42:20,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:42:20,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:42:20,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:42:20,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:42:20,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:42:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:42:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:42:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:42:20,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:42:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:42:20,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027603807] [2020-10-27 01:42:20,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:42:20,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 01:42:20,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216249599] [2020-10-27 01:42:20,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 01:42:20,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:42:20,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 01:42:20,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:42:20,577 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2020-10-27 01:42:20,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:42:20,805 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-27 01:42:20,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:42:20,806 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-10-27 01:42:20,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:42:20,806 INFO L225 Difference]: With dead ends: 19 [2020-10-27 01:42:20,806 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 01:42:20,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-27 01:42:20,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 01:42:20,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 01:42:20,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 01:42:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 01:42:20,808 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-27 01:42:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:42:20,809 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 01:42:20,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 01:42:20,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 01:42:20,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 01:42:20,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:42:20,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 01:42:21,114 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2020-10-27 01:42:21,202 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-27 01:42:21,202 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-27 01:42:21,202 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-27 01:42:21,202 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-27 01:42:21,203 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-27 01:42:21,203 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:42:21,203 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-27 01:42:21,203 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:42:21,203 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:42:21,203 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 01:42:21,204 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 01:42:21,204 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:42:21,204 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-27 01:42:21,204 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-27 01:42:21,204 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-27 01:42:21,204 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-27 01:42:21,204 INFO L270 CegarLoopResult]: At program point L33-2(lines 33 37) the Hoare annotation is: (or (let ((.cse0 (+ main_~y~0 main_~z~0))) (and (<= .cse0 main_~x~0) (<= main_~x~0 .cse0))) (not (= main_~i~0 main_~j~0))) [2020-10-27 01:42:21,205 INFO L274 CegarLoopResult]: For program point L33-3(lines 24 42) no Hoare annotation was computed. [2020-10-27 01:42:21,205 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-10-27 01:42:21,205 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 42) no Hoare annotation was computed. [2020-10-27 01:42:21,205 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 42) no Hoare annotation was computed. [2020-10-27 01:42:21,205 INFO L274 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-10-27 01:42:21,205 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 42) the Hoare annotation is: true [2020-10-27 01:42:21,206 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-10-27 01:42:21,206 INFO L270 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 main_~z~0))) (let ((.cse1 (= .cse0 0))) (or (and (<= .cse0 0) (= main_~j~0 main_~y~0) (<= 0 .cse0) (= main_~j~0 main_~x~0)) (and (or (and (<= .cse0 main_~x~0) (<= main_~x~0 .cse0)) (not (= main_~i~0 main_~j~0))) .cse1) (and (= main_~i~0 1) .cse1)))) [2020-10-27 01:42:21,206 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-27 01:42:21,206 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-27 01:42:21,206 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-27 01:42:21,207 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-27 01:42:21,207 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-27 01:42:21,207 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-27 01:42:21,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:42:21 BoogieIcfgContainer [2020-10-27 01:42:21,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:42:21,227 INFO L168 Benchmark]: Toolchain (without parser) took 4719.15 ms. Allocated memory was 125.8 MB in the beginning and 153.1 MB in the end (delta: 27.3 MB). Free memory was 101.8 MB in the beginning and 53.9 MB in the end (delta: 47.8 MB). Peak memory consumption was 76.2 MB. Max. memory is 8.0 GB. [2020-10-27 01:42:21,228 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:42:21,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.43 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 91.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:42:21,229 INFO L168 Benchmark]: Boogie Preprocessor took 35.49 ms. Allocated memory is still 125.8 MB. Free memory was 91.5 MB in the beginning and 90.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:42:21,230 INFO L168 Benchmark]: RCFGBuilder took 369.10 ms. Allocated memory is still 125.8 MB. Free memory was 90.0 MB in the beginning and 75.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:42:21,231 INFO L168 Benchmark]: TraceAbstraction took 4046.12 ms. Allocated memory was 125.8 MB in the beginning and 153.1 MB in the end (delta: 27.3 MB). Free memory was 74.9 MB in the beginning and 53.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 48.9 MB. Max. memory is 8.0 GB. [2020-10-27 01:42:21,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.43 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 91.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.49 ms. Allocated memory is still 125.8 MB. Free memory was 91.5 MB in the beginning and 90.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 369.10 ms. Allocated memory is still 125.8 MB. Free memory was 90.0 MB in the beginning and 75.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4046.12 ms. Allocated memory was 125.8 MB in the beginning and 153.1 MB in the end (delta: 27.3 MB). Free memory was 74.9 MB in the beginning and 53.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 48.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 33]: Loop Invariant Derived loop invariant: (y + z <= x && x <= y + z) || !(i == j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 68 SDslu, 114 SDs, 0 SdLazy, 224 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.6s 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, 22 NumberOfFragments, 98 HoareAnnotationTreeSize, 17 FomulaSimplifications, 148 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 226 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 6361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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...