/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=0.4 --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 -i ../../../trunk/examples/svcomp/loop-lit/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:20:25,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:20:25,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:20:25,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:20:25,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:20:25,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:20:25,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:20:25,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:20:25,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:20:25,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:20:25,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:20:25,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:20:25,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:20:25,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:20:25,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:20:25,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:20:25,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:20:25,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:20:25,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:20:25,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:20:25,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:20:25,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:20:25,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:20:25,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:20:25,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:20:25,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:20:25,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:20:25,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:20:25,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:20:25,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:20:25,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:20:25,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:20:25,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:20:25,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:20:25,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:20:25,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:20:25,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:20:25,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:20:25,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:20:25,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:20:25,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:20:25,837 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 [2020-10-14 05:20:25,877 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:20:25,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:20:25,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:20:25,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:20:25,880 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:20:25,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:20:25,880 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:20:25,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:20:25,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:20:25,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:20:25,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:20:25,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:20:25,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:20:25,882 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:20:25,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:20:25,883 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:20:25,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:20:25,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:20:25,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:20:25,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:20:25,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:20:25,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:20:25,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:20:25,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:20:25,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:20:25,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:20:25,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:20:25,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:20:25,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:20:25,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:20:26,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:20:26,255 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:20:26,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:20:26,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:20:26,261 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:20:26,262 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2020-10-14 05:20:26,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d061babd/fb83063e474e48a4b9139982e94cbe47/FLAG738faaf83 [2020-10-14 05:20:26,808 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:20:26,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gj2007b.i [2020-10-14 05:20:26,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d061babd/fb83063e474e48a4b9139982e94cbe47/FLAG738faaf83 [2020-10-14 05:20:27,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d061babd/fb83063e474e48a4b9139982e94cbe47 [2020-10-14 05:20:27,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:20:27,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:20:27,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:20:27,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:20:27,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:20:27,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:20:27" (1/1) ... [2020-10-14 05:20:27,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656a7a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:27, skipping insertion in model container [2020-10-14 05:20:27,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:20:27" (1/1) ... [2020-10-14 05:20:27,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:20:27,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:20:27,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:20:27,429 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:20:27,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:20:27,455 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:20:27,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:27 WrapperNode [2020-10-14 05:20:27,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:20:27,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:20:27,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:20:27,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:20:27,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:27" (1/1) ... [2020-10-14 05:20:27,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:27" (1/1) ... [2020-10-14 05:20:27,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:27" (1/1) ... [2020-10-14 05:20:27,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:27" (1/1) ... [2020-10-14 05:20:27,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:27" (1/1) ... [2020-10-14 05:20:27,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:27" (1/1) ... [2020-10-14 05:20:27,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:27" (1/1) ... [2020-10-14 05:20:27,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:20:27,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:20:27,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:20:27,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:20:27,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:27" (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 [2020-10-14 05:20:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:20:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:20:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 05:20:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:20:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:20:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:20:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:20:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 05:20:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:20:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:20:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:20:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:20:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:20:27,809 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:20:27,809 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:20:27,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:20:27 BoogieIcfgContainer [2020-10-14 05:20:27,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:20:27,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:20:27,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:20:27,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:20:27,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:20:27" (1/3) ... [2020-10-14 05:20:27,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a01e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:20:27, skipping insertion in model container [2020-10-14 05:20:27,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:27" (2/3) ... [2020-10-14 05:20:27,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a01e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:20:27, skipping insertion in model container [2020-10-14 05:20:27,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:20:27" (3/3) ... [2020-10-14 05:20:27,823 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2020-10-14 05:20:27,837 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:20:27,845 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:20:27,860 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:20:27,885 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:20:27,886 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:20:27,886 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:20:27,886 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:20:27,886 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:20:27,886 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:20:27,887 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:20:27,887 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:20:27,907 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-14 05:20:27,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 05:20:27,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:20:27,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:20:27,915 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:20:27,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:20:27,922 INFO L82 PathProgramCache]: Analyzing trace with hash 508025261, now seen corresponding path program 1 times [2020-10-14 05:20:27,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:20:27,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642320453] [2020-10-14 05:20:27,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:20:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:28,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:28,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:28,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:20:28,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:28,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 05:20:28,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:28,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:28,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:20:28,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:20:28,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:20:28,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:20:28,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:20:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:28,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:28,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:28,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:20:28,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:20:28,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:28,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:20:28,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:20:28,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:20:28,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:20:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:20:28,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642320453] [2020-10-14 05:20:28,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:20:28,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:20:28,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650832820] [2020-10-14 05:20:28,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:20:28,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:20:28,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:20:28,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:20:28,285 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-10-14 05:20:28,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:20:28,372 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2020-10-14 05:20:28,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:20:28,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-14 05:20:28,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:20:28,391 INFO L225 Difference]: With dead ends: 46 [2020-10-14 05:20:28,392 INFO L226 Difference]: Without dead ends: 25 [2020-10-14 05:20:28,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:20:28,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-14 05:20:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-14 05:20:28,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-14 05:20:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-10-14 05:20:28,457 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 10 [2020-10-14 05:20:28,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:20:28,457 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-10-14 05:20:28,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:20:28,458 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-10-14 05:20:28,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 05:20:28,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:20:28,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:20:28,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:20:28,460 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:20:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:20:28,461 INFO L82 PathProgramCache]: Analyzing trace with hash -133512762, now seen corresponding path program 1 times [2020-10-14 05:20:28,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:20:28,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069047719] [2020-10-14 05:20:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:20:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:28,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:28,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:28,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:20:28,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:20:28,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-14 05:20:28,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:28,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:20:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:20:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:20:28,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:20:28,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:20:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:28,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:28,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:20:28,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:28,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:20:28,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:28,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:20:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:20:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:20:28,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:20:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:20:28,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069047719] [2020-10-14 05:20:28,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:20:28,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:20:28,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887715764] [2020-10-14 05:20:28,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:20:28,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:20:28,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:20:28,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:20:28,938 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2020-10-14 05:20:29,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:20:29,011 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-10-14 05:20:29,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:20:29,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-14 05:20:29,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:20:29,016 INFO L225 Difference]: With dead ends: 30 [2020-10-14 05:20:29,016 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 05:20:29,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:20:29,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 05:20:29,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2020-10-14 05:20:29,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-14 05:20:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-14 05:20:29,024 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-10-14 05:20:29,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:20:29,025 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-14 05:20:29,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:20:29,025 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-14 05:20:29,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 05:20:29,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:20:29,026 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:20:29,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:20:29,026 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:20:29,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:20:29,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1022031800, now seen corresponding path program 1 times [2020-10-14 05:20:29,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:20:29,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689045441] [2020-10-14 05:20:29,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:20:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:29,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:29,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:29,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:20:29,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:29,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 05:20:29,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:29,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:29,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:20:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:20:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:20:29,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:20:29,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:20:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:29,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:29,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:29,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:20:29,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:29,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:20:29,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:29,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:29,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:20:29,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:20:29,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:20:29,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:20:29,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:20:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:29,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:29,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:29,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:20:29,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:29,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:20:29,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:29,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:29,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:20:29,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:20:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:20:29,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:20:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:20:29,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689045441] [2020-10-14 05:20:29,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:20:29,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:20:29,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892651141] [2020-10-14 05:20:29,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:20:29,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:20:29,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:20:29,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:20:29,186 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2020-10-14 05:20:29,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:20:29,237 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2020-10-14 05:20:29,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:20:29,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-14 05:20:29,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:20:29,239 INFO L225 Difference]: With dead ends: 27 [2020-10-14 05:20:29,239 INFO L226 Difference]: Without dead ends: 21 [2020-10-14 05:20:29,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:20:29,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-14 05:20:29,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-14 05:20:29,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 05:20:29,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-14 05:20:29,252 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2020-10-14 05:20:29,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:20:29,253 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-14 05:20:29,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:20:29,253 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-14 05:20:29,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 05:20:29,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:20:29,255 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:20:29,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:20:29,257 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:20:29,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:20:29,257 INFO L82 PathProgramCache]: Analyzing trace with hash 996292415, now seen corresponding path program 1 times [2020-10-14 05:20:29,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:20:29,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137765382] [2020-10-14 05:20:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:20:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:29,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:29,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:29,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:29,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:20:29,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:20:29,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 05:20:29,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:29,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:20:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:20:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:20:29,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:20:29,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:20:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:29,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:29,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:29,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:20:29,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:29,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:20:29,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:29,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:20:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:20:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:20:29,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 05:20:29,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:20:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:29,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:29,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:29,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:20:29,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:29,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:20:29,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:29,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:20:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:20:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:20:29,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:20:29,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:20:29,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137765382] [2020-10-14 05:20:29,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:20:29,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:20:29,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265273067] [2020-10-14 05:20:29,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:20:29,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:20:29,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:20:29,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:20:29,606 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2020-10-14 05:20:29,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:20:29,693 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-10-14 05:20:29,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:20:29,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-14 05:20:29,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:20:29,696 INFO L225 Difference]: With dead ends: 38 [2020-10-14 05:20:29,697 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 05:20:29,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:20:29,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 05:20:29,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-10-14 05:20:29,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-14 05:20:29,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-14 05:20:29,712 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-10-14 05:20:29,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:20:29,713 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-14 05:20:29,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:20:29,713 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-14 05:20:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 05:20:29,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:20:29,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:20:29,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:20:29,716 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:20:29,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:20:29,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1301547432, now seen corresponding path program 2 times [2020-10-14 05:20:29,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:20:29,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639757926] [2020-10-14 05:20:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:20:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:29,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:29,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:29,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:20:29,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:29,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 05:20:29,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:29,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:20:29,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:20:29,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:20:29,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:20:29,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:20:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:29,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:29,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:29,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:20:29,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:29,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:20:29,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:29,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:20:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:20:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:20:29,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:20:29,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:20:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:29,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:29,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:29,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:20:29,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:29,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:20:29,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:29,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:20:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:20:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:20:29,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:20:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:20:29,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639757926] [2020-10-14 05:20:29,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:20:29,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 05:20:29,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669683671] [2020-10-14 05:20:29,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:20:29,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:20:29,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:20:29,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:20:29,900 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 6 states. [2020-10-14 05:20:29,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:20:29,975 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-10-14 05:20:29,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:20:29,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-14 05:20:29,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:20:29,978 INFO L225 Difference]: With dead ends: 26 [2020-10-14 05:20:29,978 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:20:29,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:20:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:20:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:20:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:20:29,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:20:29,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-14 05:20:29,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:20:29,981 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:20:29,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:20:29,986 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:20:29,986 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:20:29,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:20:29,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:20:30,209 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 05:20:30,210 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:20:30,210 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:20:30,210 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:20:30,210 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:20:30,210 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:20:30,211 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:20:30,211 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-14 05:20:30,211 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:20:30,211 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:20:30,211 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-10-14 05:20:30,211 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-10-14 05:20:30,211 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-10-14 05:20:30,212 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (<= 0 main_~m~0)) (.cse1 (<= 0 main_~x~0))) (or (and .cse0 .cse1 (<= main_~m~0 0)) (and .cse0 (<= (+ main_~m~0 1) main_~n~0) .cse1))) [2020-10-14 05:20:30,212 INFO L268 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-14 05:20:30,212 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 20) no Hoare annotation was computed. [2020-10-14 05:20:30,212 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= 0 main_~x~0))) (or (and .cse0 (= main_~m~0 0)) (and (<= 0 main_~m~0) (<= (+ main_~m~0 1) main_~n~0) .cse0))) [2020-10-14 05:20:30,213 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= 0 main_~m~0)) (.cse1 (<= 0 main_~x~0))) (or (and .cse0 .cse1 (<= main_~m~0 0)) (and .cse0 (<= (+ main_~m~0 1) main_~n~0) .cse1))) [2020-10-14 05:20:30,213 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed. [2020-10-14 05:20:30,213 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-14 05:20:30,213 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-14 05:20:30,213 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-14 05:20:30,213 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-14 05:20:30,214 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-14 05:20:30,214 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-14 05:20:30,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:20:30 BoogieIcfgContainer [2020-10-14 05:20:30,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:20:30,236 INFO L168 Benchmark]: Toolchain (without parser) took 3017.52 ms. Allocated memory was 145.8 MB in the beginning and 234.4 MB in the end (delta: 88.6 MB). Free memory was 102.1 MB in the beginning and 132.9 MB in the end (delta: -30.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2020-10-14 05:20:30,236 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 05:20:30,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.05 ms. Allocated memory is still 145.8 MB. Free memory was 101.9 MB in the beginning and 92.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-10-14 05:20:30,239 INFO L168 Benchmark]: Boogie Preprocessor took 110.51 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 92.1 MB in the beginning and 180.0 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-14 05:20:30,239 INFO L168 Benchmark]: RCFGBuilder took 245.95 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 167.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-10-14 05:20:30,241 INFO L168 Benchmark]: TraceAbstraction took 2417.74 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 166.8 MB in the beginning and 132.9 MB in the end (delta: 33.8 MB). Peak memory consumption was 66.9 MB. Max. memory is 7.1 GB. [2020-10-14 05:20:30,245 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.05 ms. Allocated memory is still 145.8 MB. Free memory was 101.9 MB in the beginning and 92.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.51 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 92.1 MB in the beginning and 180.0 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 245.95 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 167.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2417.74 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 166.8 MB in the beginning and 132.9 MB in the end (delta: 33.8 MB). Peak memory consumption was 66.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 17]: Loop Invariant Derived loop invariant: (0 <= x && m == 0) || ((0 <= m && m + 1 <= n) && 0 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 41 SDslu, 246 SDs, 0 SdLazy, 105 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=1, 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, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 24 NumberOfFragments, 71 HoareAnnotationTreeSize, 15 FomulaSimplifications, 59 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 2312 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 11/13 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...