/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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:42:12,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:42:12,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:42:12,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:42:12,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:42:12,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:42:12,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:42:12,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:42:12,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:42:12,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:42:12,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:42:12,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:42:12,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:42:12,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:42:12,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:42:12,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:42:12,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:42:12,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:42:12,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:42:12,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:42:12,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:42:12,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:42:12,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:42:12,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:42:12,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:42:12,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:42:12,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:42:12,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:42:12,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:42:12,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:42:12,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:42:12,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:42:12,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:42:12,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:42:12,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:42:12,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:42:12,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:42:12,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:42:12,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:42:12,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:42:12,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:42:12,849 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 [2020-09-25 05:42:12,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:42:12,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:42:12,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:42:12,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:42:12,898 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:42:12,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:42:12,899 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:42:12,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:42:12,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:42:12,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:42:12,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:42:12,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:42:12,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:42:12,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:42:12,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:42:12,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:42:12,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:42:12,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:42:12,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:42:12,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:42:12,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:42:12,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:42:12,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:42:12,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:42:12,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:42:12,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:42:12,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:42:12,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:42:12,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:42:12,905 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 -> SingleStatement 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; 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; 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; 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; 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; 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; [2020-09-25 05:42:13,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:42:13,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:42:13,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:42:13,414 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:42:13,414 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:42:13,415 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2020-09-25 05:42:13,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1759781f2/5b456553ebd442398fe49ce220745f24/FLAGb4722a244 [2020-09-25 05:42:14,078 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:42:14,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2020-09-25 05:42:14,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1759781f2/5b456553ebd442398fe49ce220745f24/FLAGb4722a244 [2020-09-25 05:42:14,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1759781f2/5b456553ebd442398fe49ce220745f24 [2020-09-25 05:42:14,408 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:42:14,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:42:14,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:42:14,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:42:14,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:42:14,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:42:14" (1/1) ... [2020-09-25 05:42:14,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302e0b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:14, skipping insertion in model container [2020-09-25 05:42:14,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:42:14" (1/1) ... [2020-09-25 05:42:14,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:42:14,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:42:14,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:42:14,690 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:42:14,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:42:14,744 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:42:14,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:14 WrapperNode [2020-09-25 05:42:14,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:42:14,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:42:14,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:42:14,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:42:14,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:14" (1/1) ... [2020-09-25 05:42:14,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:14" (1/1) ... [2020-09-25 05:42:14,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:14" (1/1) ... [2020-09-25 05:42:14,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:14" (1/1) ... [2020-09-25 05:42:14,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:14" (1/1) ... [2020-09-25 05:42:14,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:14" (1/1) ... [2020-09-25 05:42:14,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:14" (1/1) ... [2020-09-25 05:42:14,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:42:14,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:42:14,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:42:14,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:42:14,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:14" (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 [2020-09-25 05:42:14,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:42:14,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:42:14,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 05:42:14,956 INFO L138 BoogieDeclarations]: Found implementation of procedure printEven [2020-09-25 05:42:14,956 INFO L138 BoogieDeclarations]: Found implementation of procedure printOdd [2020-09-25 05:42:14,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:42:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:42:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:42:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 05:42:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure printEven [2020-09-25 05:42:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure printOdd [2020-09-25 05:42:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:42:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:42:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:42:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:42:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:42:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:42:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:42:15,316 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:42:15,317 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 05:42:15,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:42:15 BoogieIcfgContainer [2020-09-25 05:42:15,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:42:15,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:42:15,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:42:15,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:42:15,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:42:14" (1/3) ... [2020-09-25 05:42:15,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d65abbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:42:15, skipping insertion in model container [2020-09-25 05:42:15,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:14" (2/3) ... [2020-09-25 05:42:15,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d65abbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:42:15, skipping insertion in model container [2020-09-25 05:42:15,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:42:15" (3/3) ... [2020-09-25 05:42:15,333 INFO L109 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2020-09-25 05:42:15,345 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:42:15,355 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:42:15,378 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:42:15,411 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:42:15,411 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:42:15,411 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:42:15,411 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:42:15,411 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:42:15,412 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:42:15,412 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:42:15,412 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:42:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-25 05:42:15,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 05:42:15,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:15,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:42:15,448 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:15,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:15,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1447674201, now seen corresponding path program 1 times [2020-09-25 05:42:15,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:15,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435635868] [2020-09-25 05:42:15,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:15,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:15,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:16,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:16,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:42:16,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:42:16,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-09-25 05:42:16,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:16,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:16,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:16,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:42:16,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:16,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:42:16,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:16,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:16,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:16,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:16,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:16,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:42:16,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:16,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:16,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:16,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:42:16,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435635868] [2020-09-25 05:42:16,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:42:16,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:42:16,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551055988] [2020-09-25 05:42:16,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:42:16,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:16,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:42:16,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:42:16,435 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-25 05:42:16,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:16,646 INFO L93 Difference]: Finished difference Result 110 states and 130 transitions. [2020-09-25 05:42:16,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:42:16,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-25 05:42:16,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:16,661 INFO L225 Difference]: With dead ends: 110 [2020-09-25 05:42:16,661 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 05:42:16,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:42:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 05:42:16,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 05:42:16,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 05:42:16,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-09-25 05:42:16,721 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 26 [2020-09-25 05:42:16,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:16,722 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-09-25 05:42:16,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:42:16,723 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-09-25 05:42:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 05:42:16,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:16,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:42:16,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:42:16,725 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:16,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:16,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1779758876, now seen corresponding path program 1 times [2020-09-25 05:42:16,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:16,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629658406] [2020-09-25 05:42:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:16,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:16,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:17,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:17,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:42:17,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:42:17,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-09-25 05:42:17,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:17,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:17,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:42:17,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:42:17,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:42:17,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:42:17,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:17,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:17,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:17,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:17,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:17,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:42:17,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:17,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:17,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:17,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:17,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:17,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:17,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:42:17,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629658406] [2020-09-25 05:42:17,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:42:17,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:42:17,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854517483] [2020-09-25 05:42:17,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:42:17,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:17,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:42:17,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:42:17,553 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 6 states. [2020-09-25 05:42:17,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:17,873 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2020-09-25 05:42:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:42:17,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-25 05:42:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:17,877 INFO L225 Difference]: With dead ends: 125 [2020-09-25 05:42:17,877 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 05:42:17,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:42:17,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 05:42:17,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 60. [2020-09-25 05:42:17,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 05:42:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-09-25 05:42:17,913 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 26 [2020-09-25 05:42:17,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:17,913 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-09-25 05:42:17,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:42:17,913 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-09-25 05:42:17,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 05:42:17,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:17,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:42:17,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:42:17,917 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:17,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:17,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1567937856, now seen corresponding path program 1 times [2020-09-25 05:42:17,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:17,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574117650] [2020-09-25 05:42:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:17,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:18,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:18,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 05:42:18,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-09-25 05:42:18,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:18,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:42:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 05:42:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:42:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:18,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:18,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:18,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:18,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:18,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:42:18,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:18,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:18,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:18,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:18,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:18,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:42:18,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574117650] [2020-09-25 05:42:18,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:42:18,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 05:42:18,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460842751] [2020-09-25 05:42:18,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:42:18,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:18,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:42:18,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:42:18,455 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 10 states. [2020-09-25 05:42:18,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:18,894 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-09-25 05:42:18,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:42:18,895 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-09-25 05:42:18,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:18,897 INFO L225 Difference]: With dead ends: 68 [2020-09-25 05:42:18,897 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 05:42:18,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:42:18,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 05:42:18,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-09-25 05:42:18,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 05:42:18,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-09-25 05:42:18,918 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 33 [2020-09-25 05:42:18,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:18,918 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-09-25 05:42:18,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:42:18,922 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-09-25 05:42:18,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 05:42:18,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:18,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:42:18,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:42:18,925 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:18,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:18,925 INFO L82 PathProgramCache]: Analyzing trace with hash -741681537, now seen corresponding path program 1 times [2020-09-25 05:42:18,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:18,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805795390] [2020-09-25 05:42:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:18,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:19,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:19,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:19,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:22,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:22,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 05:42:22,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:42:22,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3122 [2020-09-25 05:42:22,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:22,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:22,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:42:22,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 05:42:22,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:42:22,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:42:22,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:22,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:22,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:22,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:22,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:22,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:42:22,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:22,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:22,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:22,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:42:22,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805795390] [2020-09-25 05:42:22,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:42:22,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 05:42:22,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569853532] [2020-09-25 05:42:22,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 05:42:22,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:22,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 05:42:22,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:42:22,383 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 12 states. [2020-09-25 05:42:23,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:23,197 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2020-09-25 05:42:23,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:42:23,198 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-09-25 05:42:23,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:23,199 INFO L225 Difference]: With dead ends: 133 [2020-09-25 05:42:23,200 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 05:42:23,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-09-25 05:42:23,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 05:42:23,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 92. [2020-09-25 05:42:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 05:42:23,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-09-25 05:42:23,224 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 42 [2020-09-25 05:42:23,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:23,225 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-09-25 05:42:23,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 05:42:23,225 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-09-25 05:42:23,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 05:42:23,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:23,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:42:23,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:42:23,230 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:23,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:23,231 INFO L82 PathProgramCache]: Analyzing trace with hash 583132947, now seen corresponding path program 1 times [2020-09-25 05:42:23,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:23,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351410831] [2020-09-25 05:42:23,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:23,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:23,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:23,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:25,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:25,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:27,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:28,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:28,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 05:42:28,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:42:28,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:42:28,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:28,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:28,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:42:28,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:42:28,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:42:28,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:28,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:28,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:28,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:28,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:28,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:28,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:42:28,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:28,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:28,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:28,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:28,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:28,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:28,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:42:28,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351410831] [2020-09-25 05:42:28,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:42:28,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:42:28,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750837222] [2020-09-25 05:42:28,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:42:28,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:28,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:42:28,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:42:28,425 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 10 states. [2020-09-25 05:42:28,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:28,834 INFO L93 Difference]: Finished difference Result 199 states and 225 transitions. [2020-09-25 05:42:28,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:42:28,835 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-09-25 05:42:28,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:28,840 INFO L225 Difference]: With dead ends: 199 [2020-09-25 05:42:28,840 INFO L226 Difference]: Without dead ends: 151 [2020-09-25 05:42:28,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:42:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-25 05:42:28,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 121. [2020-09-25 05:42:28,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-25 05:42:28,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 134 transitions. [2020-09-25 05:42:28,872 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 134 transitions. Word has length 49 [2020-09-25 05:42:28,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:28,876 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 134 transitions. [2020-09-25 05:42:28,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:42:28,877 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 134 transitions. [2020-09-25 05:42:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 05:42:28,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:28,881 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:42:28,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:42:28,884 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:28,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:28,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1432806336, now seen corresponding path program 1 times [2020-09-25 05:42:28,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:28,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013766588] [2020-09-25 05:42:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:28,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:29,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:29,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:29,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:30,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:31,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:31,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:33,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:33,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 05:42:33,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:42:33,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 05:42:33,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:33,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:42:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 05:42:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:42:33,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:34,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:34,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:34,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:34,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:34,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:42:34,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:34,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:34,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:42:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:34,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:34,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:34,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 05:42:34,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:34,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:42:34,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:34,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:42:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 05:42:34,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:34,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 05:42:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:34,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:34,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:34,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:42:34,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:34,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:42:34,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:34,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:34,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:42:34,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013766588] [2020-09-25 05:42:34,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:42:34,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:42:34,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152116124] [2020-09-25 05:42:34,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:42:34,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:34,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:42:34,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:42:34,120 INFO L87 Difference]: Start difference. First operand 121 states and 134 transitions. Second operand 8 states. [2020-09-25 05:42:34,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:34,641 INFO L93 Difference]: Finished difference Result 178 states and 197 transitions. [2020-09-25 05:42:34,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:42:34,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-09-25 05:42:34,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:34,643 INFO L225 Difference]: With dead ends: 178 [2020-09-25 05:42:34,643 INFO L226 Difference]: Without dead ends: 129 [2020-09-25 05:42:34,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:42:34,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-09-25 05:42:34,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 102. [2020-09-25 05:42:34,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 05:42:34,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-09-25 05:42:34,671 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 53 [2020-09-25 05:42:34,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:34,671 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-09-25 05:42:34,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:42:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-09-25 05:42:34,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 05:42:34,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:34,674 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:42:34,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:42:34,674 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:34,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:34,675 INFO L82 PathProgramCache]: Analyzing trace with hash -2046698769, now seen corresponding path program 2 times [2020-09-25 05:42:34,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:34,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464920487] [2020-09-25 05:42:34,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:34,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:34,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:34,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:38,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:39,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:39,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:42:39,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:42:39,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:42:39,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:39,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:42:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:42:39,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 05:42:39,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:39,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:39,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:39,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:39,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:39,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:39,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:42:39,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:39,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:39,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 05:42:39,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464920487] [2020-09-25 05:42:39,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:42:39,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:42:39,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095977796] [2020-09-25 05:42:39,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:42:39,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:39,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:42:39,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:42:39,850 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand 10 states. [2020-09-25 05:42:40,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:40,277 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2020-09-25 05:42:40,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 05:42:40,278 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-09-25 05:42:40,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:40,279 INFO L225 Difference]: With dead ends: 159 [2020-09-25 05:42:40,279 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 05:42:40,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2020-09-25 05:42:40,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 05:42:40,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2020-09-25 05:42:40,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 05:42:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2020-09-25 05:42:40,290 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 56 [2020-09-25 05:42:40,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:40,290 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2020-09-25 05:42:40,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:42:40,291 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2020-09-25 05:42:40,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 05:42:40,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:40,292 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:42:40,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:42:40,293 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:40,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:40,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1800344370, now seen corresponding path program 3 times [2020-09-25 05:42:40,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:40,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658540158] [2020-09-25 05:42:40,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:40,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:40,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:40,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:40,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:42,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:42,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:43,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:44,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:45,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:45,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 05:42:45,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:42:45,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:42:45,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:45,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:45,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:42:45,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-25 05:42:45,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:42:45,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:45,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:45,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:45,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:45,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:45,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:45,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:42:45,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:45,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:45,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:45,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 05:42:45,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658540158] [2020-09-25 05:42:45,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:42:45,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:42:45,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723739275] [2020-09-25 05:42:45,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:42:45,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:45,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:42:45,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:42:45,476 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand 8 states. [2020-09-25 05:42:45,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:45,958 INFO L93 Difference]: Finished difference Result 153 states and 166 transitions. [2020-09-25 05:42:45,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:42:45,959 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 05:42:45,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:45,960 INFO L225 Difference]: With dead ends: 153 [2020-09-25 05:42:45,961 INFO L226 Difference]: Without dead ends: 132 [2020-09-25 05:42:45,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:42:45,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-25 05:42:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 115. [2020-09-25 05:42:45,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 05:42:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2020-09-25 05:42:45,978 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 63 [2020-09-25 05:42:45,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:45,979 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions. [2020-09-25 05:42:45,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:42:45,979 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2020-09-25 05:42:45,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 05:42:45,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:45,981 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:42:45,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:42:45,982 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:45,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:45,982 INFO L82 PathProgramCache]: Analyzing trace with hash 56994667, now seen corresponding path program 1 times [2020-09-25 05:42:45,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:45,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035648993] [2020-09-25 05:42:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:46,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:46,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:46,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:47,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:47,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:49,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:51,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:51,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 05:42:51,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:42:51,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 05:42:51,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:51,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:42:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 05:42:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:42:51,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:51,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:51,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:51,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:51,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:51,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:42:51,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:51,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:51,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:51,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 05:42:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:51,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:51,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:51,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 05:42:51,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:51,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:42:51,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:51,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:51,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:51,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 05:42:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:51,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:51,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:51,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:42:51,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:51,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:42:51,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:51,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:51,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:51,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:51,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:51,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 05:42:51,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035648993] [2020-09-25 05:42:51,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:42:51,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 05:42:51,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153783960] [2020-09-25 05:42:51,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:42:51,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:51,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:42:51,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:42:51,189 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand 10 states. [2020-09-25 05:42:51,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:51,591 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2020-09-25 05:42:51,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:42:51,593 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-09-25 05:42:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:51,594 INFO L225 Difference]: With dead ends: 117 [2020-09-25 05:42:51,594 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:42:51,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:42:51,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:42:51,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:42:51,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:42:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:42:51,597 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2020-09-25 05:42:51,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:51,597 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:42:51,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:42:51,597 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:42:51,597 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:42:51,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:42:51,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 05:42:51,994 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-09-25 05:42:52,116 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 05:42:52,116 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 05:42:52,117 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:42:52,117 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 05:42:52,117 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:42:52,117 INFO L271 CegarLoopResult]: At program point printOddENTRY(lines 7 9) the Hoare annotation is: true [2020-09-25 05:42:52,118 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (or (not (<= 1 (+ (* 2 (div (+ (* |printOdd_#in~i| (- 1)) 1) 2)) |printOdd_#in~i|))) (<= (+ (* 2 (div printOdd_~i 2)) 1) printOdd_~i)) [2020-09-25 05:42:52,118 INFO L268 CegarLoopResult]: For program point printOddFINAL(lines 7 9) no Hoare annotation was computed. [2020-09-25 05:42:52,118 INFO L268 CegarLoopResult]: For program point printOddEXIT(lines 7 9) no Hoare annotation was computed. [2020-09-25 05:42:52,118 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:42:52,118 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 05:42:52,118 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 05:42:52,119 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:42:52,119 INFO L268 CegarLoopResult]: For program point printEvenEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 05:42:52,119 INFO L271 CegarLoopResult]: At program point printEvenENTRY(lines 4 6) the Hoare annotation is: true [2020-09-25 05:42:52,119 INFO L268 CegarLoopResult]: For program point printEvenFINAL(lines 4 6) no Hoare annotation was computed. [2020-09-25 05:42:52,119 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (or (not (<= 0 (+ (* 2 (div (* |printEven_#in~i| (- 1)) 2)) |printEven_#in~i|))) (<= printEven_~i (* 2 (div printEven_~i 2)))) [2020-09-25 05:42:52,119 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 36) no Hoare annotation was computed. [2020-09-25 05:42:52,120 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 05:42:52,120 INFO L268 CegarLoopResult]: For program point L23-1(lines 23 26) no Hoare annotation was computed. [2020-09-25 05:42:52,121 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 05:42:52,121 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 05:42:52,121 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 05:42:52,121 INFO L264 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: (let ((.cse0 (<= 1 (let ((.cse2 (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)))) (+ .cse2 (* 2 (div (+ (* .cse2 (- 1)) 1) 2)))))) (.cse1 (<= 1 (+ |main_#t~mem8| (* 2 (div (+ (* |main_#t~mem8| (- 1)) 1) 2)))))) (or (and (<= (+ main_~i~0 1) main_~num~0) .cse0 (<= 2 main_~num~0) .cse1) (and (= main_~i~0 0) .cse0 .cse1))) [2020-09-25 05:42:52,121 INFO L268 CegarLoopResult]: For program point L32-2(line 32) no Hoare annotation was computed. [2020-09-25 05:42:52,121 INFO L268 CegarLoopResult]: For program point L28-2(lines 28 34) no Hoare annotation was computed. [2020-09-25 05:42:52,122 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-25 05:42:52,122 INFO L268 CegarLoopResult]: For program point L28-4(line 28) no Hoare annotation was computed. [2020-09-25 05:42:52,122 INFO L264 CegarLoopResult]: At program point L28-5(lines 28 34) the Hoare annotation is: (or (= main_~i~0 0) (and (<= main_~i~0 1) (<= main_~num~0 main_~i~0)) (<= 2 main_~num~0)) [2020-09-25 05:42:52,122 INFO L268 CegarLoopResult]: For program point L28-6(lines 28 34) no Hoare annotation was computed. [2020-09-25 05:42:52,122 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 05:42:52,122 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2020-09-25 05:42:52,122 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 05:42:52,122 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-25 05:42:52,123 INFO L268 CegarLoopResult]: For program point L16-5(line 16) no Hoare annotation was computed. [2020-09-25 05:42:52,123 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 05:42:52,123 INFO L264 CegarLoopResult]: At program point L16-6(lines 16 19) the Hoare annotation is: (let ((.cse0 (<= 1 main_~i~0))) (or (and .cse0 (<= main_~i~0 1)) (and .cse0 (<= 2 main_~num~0)) (and (<= main_~i~0 0) (<= 0 main_~i~0)))) [2020-09-25 05:42:52,124 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 05:42:52,124 INFO L268 CegarLoopResult]: For program point L16-7(lines 16 19) no Hoare annotation was computed. [2020-09-25 05:42:52,124 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 05:42:52,124 INFO L264 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: (let ((.cse0 (<= 0 (+ (* 2 (div (* |main_#t~mem5| (- 1)) 2)) |main_#t~mem5|))) (.cse1 (<= 0 (let ((.cse2 (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)))) (+ .cse2 (* 2 (div (* .cse2 (- 1)) 2))))))) (or (and (<= main_~i~0 0) .cse0 .cse1) (and (<= (+ main_~i~0 1) main_~num~0) .cse0 .cse1))) [2020-09-25 05:42:52,124 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-25 05:42:52,124 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2020-09-25 05:42:52,124 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-25 05:42:52,125 INFO L268 CegarLoopResult]: For program point L21-4(line 21) no Hoare annotation was computed. [2020-09-25 05:42:52,125 INFO L271 CegarLoopResult]: At program point L21-5(lines 21 27) the Hoare annotation is: true [2020-09-25 05:42:52,125 INFO L268 CegarLoopResult]: For program point L21-6(lines 21 27) no Hoare annotation was computed. [2020-09-25 05:42:52,125 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 36) no Hoare annotation was computed. [2020-09-25 05:42:52,125 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 05:42:52,125 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 36) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 05:42:52,125 INFO L268 CegarLoopResult]: For program point L30-1(lines 30 33) no Hoare annotation was computed. [2020-09-25 05:42:52,125 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-25 05:42:52,126 INFO L268 CegarLoopResult]: For program point L30-4(line 30) no Hoare annotation was computed. [2020-09-25 05:42:52,126 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 05:42:52,126 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 05:42:52,126 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 05:42:52,126 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 05:42:52,127 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 05:42:52,127 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 05:42:52,127 INFO L268 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-09-25 05:42:52,127 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2020-09-25 05:42:52,127 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2020-09-25 05:42:52,127 INFO L268 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-09-25 05:42:52,128 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-09-25 05:42:52,128 INFO L268 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-09-25 05:42:52,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:42:52 BoogieIcfgContainer [2020-09-25 05:42:52,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:42:52,159 INFO L168 Benchmark]: Toolchain (without parser) took 37748.67 ms. Allocated memory was 139.5 MB in the beginning and 425.7 MB in the end (delta: 286.3 MB). Free memory was 102.4 MB in the beginning and 360.9 MB in the end (delta: -258.6 MB). Peak memory consumption was 287.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:42:52,160 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 05:42:52,162 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.51 ms. Allocated memory is still 139.5 MB. Free memory was 101.7 MB in the beginning and 91.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:42:52,163 INFO L168 Benchmark]: Boogie Preprocessor took 126.92 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 91.4 MB in the beginning and 180.1 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-25 05:42:52,168 INFO L168 Benchmark]: RCFGBuilder took 450.18 ms. Allocated memory is still 202.9 MB. Free memory was 180.1 MB in the beginning and 161.6 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-09-25 05:42:52,170 INFO L168 Benchmark]: TraceAbstraction took 36832.49 ms. Allocated memory was 202.9 MB in the beginning and 425.7 MB in the end (delta: 222.8 MB). Free memory was 160.9 MB in the beginning and 360.9 MB in the end (delta: -200.0 MB). Peak memory consumption was 283.0 MB. Max. memory is 7.1 GB. [2020-09-25 05:42:52,183 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 327.51 ms. Allocated memory is still 139.5 MB. Free memory was 101.7 MB in the beginning and 91.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.92 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 91.4 MB in the beginning and 180.1 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.18 ms. Allocated memory is still 202.9 MB. Free memory was 180.1 MB in the beginning and 161.6 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36832.49 ms. Allocated memory was 202.9 MB in the beginning and 425.7 MB in the end (delta: 222.8 MB). Free memory was 160.9 MB in the beginning and 360.9 MB in the end (delta: -200.0 MB). Peak memory consumption was 283.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (i == 0 || (i <= 1 && num <= i)) || 2 <= num - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((1 <= i && i <= 1) || (1 <= i && 2 <= num)) || (i <= 0 && 0 <= i) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 36.1s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 508 SDtfs, 511 SDslu, 1925 SDs, 0 SdLazy, 2086 SolverSat, 150 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 143 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 59 PreInvPairs, 86 NumberOfFragments, 284 HoareAnnotationTreeSize, 59 FomulaSimplifications, 928 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 14 FomulaSimplificationsInter, 981 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 31.3s InterpolantComputationTime, 422 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 413 ConstructedInterpolants, 0 QuantifiedInterpolants, 89040 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 51/68 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...