/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/nested-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:22:58,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:22:58,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:22:58,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:22:58,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:22:59,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:22:59,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:22:59,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:22:59,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:22:59,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:22:59,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:22:59,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:22:59,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:22:59,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:22:59,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:22:59,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:22:59,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:22:59,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:22:59,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:22:59,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:22:59,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:22:59,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:22:59,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:22:59,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:22:59,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:22:59,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:22:59,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:22:59,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:22:59,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:22:59,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:22:59,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:22:59,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:22:59,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:22:59,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:22:59,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:22:59,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:22:59,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:22:59,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:22:59,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:22:59,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:22:59,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:22:59,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 05:22:59,099 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:22:59,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:22:59,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:22:59,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:22:59,101 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:22:59,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:22:59,101 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:22:59,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:22:59,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:22:59,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:22:59,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:22:59,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:22:59,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:22:59,102 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:22:59,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:22:59,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:22:59,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:22:59,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:22:59,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:22:59,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:22:59,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:22:59,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:22:59,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:22:59,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:22:59,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:22:59,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:22:59,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:22:59,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:22:59,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:22:59,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:22:59,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:22:59,386 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:22:59,389 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:22:59,391 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:22:59,391 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:22:59,392 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/nested-1.i [2020-10-14 05:22:59,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4b9c4d1c/4094c30dd4544bac99dac3abf51a8f00/FLAG9f63912bc [2020-10-14 05:22:59,911 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:22:59,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/nested-1.i [2020-10-14 05:22:59,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4b9c4d1c/4094c30dd4544bac99dac3abf51a8f00/FLAG9f63912bc [2020-10-14 05:23:00,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4b9c4d1c/4094c30dd4544bac99dac3abf51a8f00 [2020-10-14 05:23:00,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:23:00,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:23:00,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:23:00,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:23:00,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:23:00,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:23:00" (1/1) ... [2020-10-14 05:23:00,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780fc4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:23:00, skipping insertion in model container [2020-10-14 05:23:00,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:23:00" (1/1) ... [2020-10-14 05:23:00,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:23:00,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:23:00,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:23:00,505 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:23:00,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:23:00,531 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:23:00,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:23:00 WrapperNode [2020-10-14 05:23:00,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:23:00,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:23:00,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:23:00,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:23:00,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:23:00" (1/1) ... [2020-10-14 05:23:00,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:23:00" (1/1) ... [2020-10-14 05:23:00,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:23:00" (1/1) ... [2020-10-14 05:23:00,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:23:00" (1/1) ... [2020-10-14 05:23:00,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:23:00" (1/1) ... [2020-10-14 05:23:00,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:23:00" (1/1) ... [2020-10-14 05:23:00,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:23:00" (1/1) ... [2020-10-14 05:23:00,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:23:00,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:23:00,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:23:00,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:23:00,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:23:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:23:00,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:23:00,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:23:00,703 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 05:23:00,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:23:00,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:23:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:23:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:23:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 05:23:00,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:23:00,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:23:00,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:23:00,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:23:00,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:23:00,903 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:23:00,903 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 05:23:00,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:23:00 BoogieIcfgContainer [2020-10-14 05:23:00,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:23:00,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:23:00,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:23:00,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:23:00,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:23:00" (1/3) ... [2020-10-14 05:23:00,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e42f182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:23:00, skipping insertion in model container [2020-10-14 05:23:00,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:23:00" (2/3) ... [2020-10-14 05:23:00,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e42f182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:23:00, skipping insertion in model container [2020-10-14 05:23:00,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:23:00" (3/3) ... [2020-10-14 05:23:00,920 INFO L109 eAbstractionObserver]: Analyzing ICFG nested-1.i [2020-10-14 05:23:00,931 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:23:00,938 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:23:00,955 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:23:00,985 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:23:00,985 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:23:00,985 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:23:00,986 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:23:00,986 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:23:00,986 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:23:00,986 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:23:00,987 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:23:01,008 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-14 05:23:01,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 05:23:01,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:01,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:01,016 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:01,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:01,024 INFO L82 PathProgramCache]: Analyzing trace with hash 718771107, now seen corresponding path program 1 times [2020-10-14 05:23:01,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:01,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739752101] [2020-10-14 05:23:01,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:01,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:01,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:01,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:23:01,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:01,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 05:23:01,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:01,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:23:01,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:23:01,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:23:01,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:23:01,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:01,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:01,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:01,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:01,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:01,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:23:01,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:01,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:01,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:01,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:23:01,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739752101] [2020-10-14 05:23:01,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:23:01,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 05:23:01,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245836838] [2020-10-14 05:23:01,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:23:01,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:01,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:23:01,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:23:01,353 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2020-10-14 05:23:01,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:01,438 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2020-10-14 05:23:01,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:23:01,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-14 05:23:01,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:01,457 INFO L225 Difference]: With dead ends: 45 [2020-10-14 05:23:01,457 INFO L226 Difference]: Without dead ends: 20 [2020-10-14 05:23:01,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:23:01,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-14 05:23:01,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2020-10-14 05:23:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-14 05:23:01,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-14 05:23:01,507 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2020-10-14 05:23:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:01,507 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-14 05:23:01,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:23:01,508 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-14 05:23:01,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 05:23:01,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:01,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:01,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:23:01,510 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:01,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:01,510 INFO L82 PathProgramCache]: Analyzing trace with hash 609355859, now seen corresponding path program 1 times [2020-10-14 05:23:01,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:01,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549494348] [2020-10-14 05:23:01,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:01,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:01,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:01,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:01,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:23:01,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:23:01,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-14 05:23:01,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:01,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:23:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:23:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:23:01,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:23:01,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:01,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:01,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:01,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:01,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:01,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:23:01,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:01,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:01,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:23:01,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549494348] [2020-10-14 05:23:01,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:01,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:23:01,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530935037] [2020-10-14 05:23:01,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:23:01,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:01,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:23:01,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:23:01,832 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2020-10-14 05:23:01,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:01,915 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-10-14 05:23:01,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:23:01,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-14 05:23:01,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:01,918 INFO L225 Difference]: With dead ends: 29 [2020-10-14 05:23:01,918 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 05:23:01,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:23:01,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 05:23:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-10-14 05:23:01,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 05:23:01,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-14 05:23:01,931 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2020-10-14 05:23:01,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:01,932 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-14 05:23:01,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:23:01,932 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-14 05:23:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 05:23:01,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:01,934 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:01,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:23:01,935 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:01,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:01,936 INFO L82 PathProgramCache]: Analyzing trace with hash 899880355, now seen corresponding path program 2 times [2020-10-14 05:23:01,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:01,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922960833] [2020-10-14 05:23:01,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:01,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:01,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:02,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:02,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:02,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:23:02,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:23:02,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 05:23:02,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:02,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:02,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:23:02,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:23:02,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:23:02,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:02,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:02,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:02,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:02,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:02,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:02,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:23:02,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:02,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:02,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:02,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:02,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:02,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:02,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:23:02,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922960833] [2020-10-14 05:23:02,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:02,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 05:23:02,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404584078] [2020-10-14 05:23:02,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:23:02,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:02,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:23:02,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:23:02,355 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 4 states. [2020-10-14 05:23:02,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:02,387 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-10-14 05:23:02,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:23:02,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 05:23:02,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:02,389 INFO L225 Difference]: With dead ends: 36 [2020-10-14 05:23:02,389 INFO L226 Difference]: Without dead ends: 25 [2020-10-14 05:23:02,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:23:02,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-14 05:23:02,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-10-14 05:23:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-14 05:23:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-14 05:23:02,397 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 18 [2020-10-14 05:23:02,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:02,397 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-14 05:23:02,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:23:02,397 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-14 05:23:02,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 05:23:02,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:02,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:02,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:23:02,399 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:02,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:02,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1909942371, now seen corresponding path program 1 times [2020-10-14 05:23:02,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:02,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962250360] [2020-10-14 05:23:02,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:02,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:02,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:02,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:02,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:02,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 05:23:02,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:23:02,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-14 05:23:02,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:02,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:23:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:23:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:23:02,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:02,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:02,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:02,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:02,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:02,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:23:02,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:02,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:02,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:02,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:02,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:02,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:23:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:23:02,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962250360] [2020-10-14 05:23:02,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:02,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:23:02,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852286130] [2020-10-14 05:23:02,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:23:02,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:02,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:23:02,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:23:02,966 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2020-10-14 05:23:03,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:03,095 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-10-14 05:23:03,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:23:03,096 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-14 05:23:03,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:03,097 INFO L225 Difference]: With dead ends: 37 [2020-10-14 05:23:03,098 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 05:23:03,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:23:03,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 05:23:03,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-10-14 05:23:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 05:23:03,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-10-14 05:23:03,115 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 22 [2020-10-14 05:23:03,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:03,117 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-10-14 05:23:03,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:23:03,118 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-10-14 05:23:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:23:03,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:03,121 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:03,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:23:03,121 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:03,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:03,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1396370095, now seen corresponding path program 2 times [2020-10-14 05:23:03,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:03,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121479662] [2020-10-14 05:23:03,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:03,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:03,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:03,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:03,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:04,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:04,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:23:04,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:23:04,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1604 [2020-10-14 05:23:04,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:04,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:04,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:23:04,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:23:04,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:23:04,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:04,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:04,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:04,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:04,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:04,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:04,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:23:04,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:04,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 05:23:04,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121479662] [2020-10-14 05:23:04,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:04,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:23:04,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263735514] [2020-10-14 05:23:04,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:23:04,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:04,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:23:04,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:23:04,773 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-10-14 05:23:04,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:04,816 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2020-10-14 05:23:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:23:04,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-14 05:23:04,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:04,817 INFO L225 Difference]: With dead ends: 54 [2020-10-14 05:23:04,818 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 05:23:04,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:23:04,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 05:23:04,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-10-14 05:23:04,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 05:23:04,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-10-14 05:23:04,827 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 27 [2020-10-14 05:23:04,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:04,828 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-10-14 05:23:04,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:23:04,828 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-10-14 05:23:04,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 05:23:04,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:04,830 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:04,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:23:04,830 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:04,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:04,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1974080049, now seen corresponding path program 3 times [2020-10-14 05:23:04,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:04,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234435183] [2020-10-14 05:23:04,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:04,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:04,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:04,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:04,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:08,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:08,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 05:23:08,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:23:08,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3496 [2020-10-14 05:23:08,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:08,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:23:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:23:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:23:08,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:08,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:08,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:08,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:08,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:08,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:08,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:23:08,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:08,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 05:23:08,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234435183] [2020-10-14 05:23:08,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:08,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:23:08,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344155898] [2020-10-14 05:23:08,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:23:08,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:08,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:23:08,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:23:08,395 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 7 states. [2020-10-14 05:23:08,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:08,472 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-10-14 05:23:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:23:08,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-14 05:23:08,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:08,473 INFO L225 Difference]: With dead ends: 52 [2020-10-14 05:23:08,473 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 05:23:08,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:23:08,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 05:23:08,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-10-14 05:23:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 05:23:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-14 05:23:08,483 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 33 [2020-10-14 05:23:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:08,483 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-14 05:23:08,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:23:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-14 05:23:08,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 05:23:08,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:08,485 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:08,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:23:08,485 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:08,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:08,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1716682915, now seen corresponding path program 4 times [2020-10-14 05:23:08,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:08,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336501328] [2020-10-14 05:23:08,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:08,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:08,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:08,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:08,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:13,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:13,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 05:23:13,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:23:13,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 05:23:13,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:13,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:13,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:23:13,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:23:13,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 05:23:13,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:13,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:13,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:13,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:13,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:13,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:13,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:23:13,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:13,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 05:23:13,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336501328] [2020-10-14 05:23:13,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:13,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:23:13,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100518698] [2020-10-14 05:23:13,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:23:13,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:13,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:23:13,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:23:13,590 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 8 states. [2020-10-14 05:23:13,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:13,701 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-10-14 05:23:13,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:23:13,703 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-10-14 05:23:13,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:13,704 INFO L225 Difference]: With dead ends: 59 [2020-10-14 05:23:13,704 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 05:23:13,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:23:13,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 05:23:13,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-10-14 05:23:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 05:23:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2020-10-14 05:23:13,716 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 40 [2020-10-14 05:23:13,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:13,717 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2020-10-14 05:23:13,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:23:13,719 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2020-10-14 05:23:13,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 05:23:13,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:13,722 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:13,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:23:13,723 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:13,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:13,723 INFO L82 PathProgramCache]: Analyzing trace with hash -924395697, now seen corresponding path program 5 times [2020-10-14 05:23:13,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:13,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411962228] [2020-10-14 05:23:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:13,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:13,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:13,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:13,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:14,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:14,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:18,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:18,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 05:23:18,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 05:23:18,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 05:23:18,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:18,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:23:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:23:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 05:23:18,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 05:23:18,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:18,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:18,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:18,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:18,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:18,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:23:18,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:18,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:18,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 9 proven. 56 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 05:23:18,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411962228] [2020-10-14 05:23:18,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:18,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:23:18,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89655459] [2020-10-14 05:23:18,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:23:18,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:18,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:23:18,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:23:18,796 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 6 states. [2020-10-14 05:23:18,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:18,861 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2020-10-14 05:23:18,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:23:18,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-10-14 05:23:18,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:18,862 INFO L225 Difference]: With dead ends: 98 [2020-10-14 05:23:18,862 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 05:23:18,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:23:18,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 05:23:18,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2020-10-14 05:23:18,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 05:23:18,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-10-14 05:23:18,872 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 47 [2020-10-14 05:23:18,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:18,873 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-10-14 05:23:18,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:23:18,873 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-10-14 05:23:18,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 05:23:18,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:18,875 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:18,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:23:18,875 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:18,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:18,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1254781069, now seen corresponding path program 6 times [2020-10-14 05:23:18,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:18,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69383095] [2020-10-14 05:23:18,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:18,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:18,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:18,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:19,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:19,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:23,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:23,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 05:23:23,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 05:23:23,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 05:23:23,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:23,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:23,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:23:23,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:23:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 05:23:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:23,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:23,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:23,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:23,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:23,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:23,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:23:23,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:23,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:23,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:23,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:23,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:23,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-14 05:23:23,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69383095] [2020-10-14 05:23:23,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:23,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:23:23,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132871766] [2020-10-14 05:23:23,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:23:23,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:23,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:23:23,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:23:23,975 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 9 states. [2020-10-14 05:23:24,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:24,087 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2020-10-14 05:23:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:23:24,087 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-14 05:23:24,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:24,088 INFO L225 Difference]: With dead ends: 80 [2020-10-14 05:23:24,089 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 05:23:24,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:23:24,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 05:23:24,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2020-10-14 05:23:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 05:23:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2020-10-14 05:23:24,098 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 57 [2020-10-14 05:23:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:24,099 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2020-10-14 05:23:24,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:23:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2020-10-14 05:23:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 05:23:24,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:24,100 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:24,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:23:24,100 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:24,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:24,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1092700515, now seen corresponding path program 7 times [2020-10-14 05:23:24,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:24,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760970408] [2020-10-14 05:23:24,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:24,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:24,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:24,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:24,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:24,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:26,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:29,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:29,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 05:23:29,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 05:23:29,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 05:23:29,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:29,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:23:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:23:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 05:23:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:29,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:29,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:29,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:29,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:29,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:29,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:29,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:29,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:29,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:29,162 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 11 proven. 134 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2020-10-14 05:23:29,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760970408] [2020-10-14 05:23:29,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:29,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:23:29,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433218584] [2020-10-14 05:23:29,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:23:29,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:29,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:23:29,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:23:29,166 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 7 states. [2020-10-14 05:23:29,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:29,243 INFO L93 Difference]: Finished difference Result 137 states and 154 transitions. [2020-10-14 05:23:29,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:23:29,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-14 05:23:29,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:29,245 INFO L225 Difference]: With dead ends: 137 [2020-10-14 05:23:29,245 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 05:23:29,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:23:29,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 05:23:29,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2020-10-14 05:23:29,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 05:23:29,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2020-10-14 05:23:29,265 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 66 [2020-10-14 05:23:29,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:29,265 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2020-10-14 05:23:29,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:23:29,265 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2020-10-14 05:23:29,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 05:23:29,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:29,267 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:29,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:23:29,270 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:29,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:29,271 INFO L82 PathProgramCache]: Analyzing trace with hash 283191459, now seen corresponding path program 8 times [2020-10-14 05:23:29,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:29,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192040804] [2020-10-14 05:23:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:29,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:29,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:29,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:29,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:29,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:34,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:34,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 05:23:34,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:23:34,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 05:23:34,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:34,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:23:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:23:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 05:23:34,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:34,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:34,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:34,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:34,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:34,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:34,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:34,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:34,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:34,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:34,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:34,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:34,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 223 proven. 180 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-10-14 05:23:34,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192040804] [2020-10-14 05:23:34,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:34,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:23:34,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546962068] [2020-10-14 05:23:34,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:23:34,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:34,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:23:34,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:23:34,363 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 8 states. [2020-10-14 05:23:34,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:34,453 INFO L93 Difference]: Finished difference Result 159 states and 176 transitions. [2020-10-14 05:23:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:23:34,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-14 05:23:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:34,454 INFO L225 Difference]: With dead ends: 159 [2020-10-14 05:23:34,454 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 05:23:34,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:23:34,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 05:23:34,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2020-10-14 05:23:34,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 05:23:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2020-10-14 05:23:34,466 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 78 [2020-10-14 05:23:34,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:34,466 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2020-10-14 05:23:34,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:23:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2020-10-14 05:23:34,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 05:23:34,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:34,468 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:34,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:23:34,468 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:34,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:34,469 INFO L82 PathProgramCache]: Analyzing trace with hash -16628509, now seen corresponding path program 9 times [2020-10-14 05:23:34,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:34,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407326427] [2020-10-14 05:23:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:34,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:34,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:34,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:34,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:34,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:39,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:39,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 05:23:39,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:23:39,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 05:23:39,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:39,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:23:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:23:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 05:23:39,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:39,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:39,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:39,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:39,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:39,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:39,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:39,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:39,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:39,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 323 proven. 269 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2020-10-14 05:23:39,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407326427] [2020-10-14 05:23:39,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:39,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:23:39,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275372271] [2020-10-14 05:23:39,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:23:39,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:39,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:23:39,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:23:39,561 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand 9 states. [2020-10-14 05:23:39,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:39,677 INFO L93 Difference]: Finished difference Result 181 states and 198 transitions. [2020-10-14 05:23:39,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:23:39,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-14 05:23:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:39,678 INFO L225 Difference]: With dead ends: 181 [2020-10-14 05:23:39,679 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 05:23:39,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:23:39,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 05:23:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-10-14 05:23:39,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 05:23:39,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2020-10-14 05:23:39,691 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 90 [2020-10-14 05:23:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:39,691 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2020-10-14 05:23:39,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:23:39,692 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2020-10-14 05:23:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 05:23:39,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:39,693 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:39,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:23:39,694 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:39,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:39,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1439129123, now seen corresponding path program 10 times [2020-10-14 05:23:39,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:39,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078453780] [2020-10-14 05:23:39,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:39,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:39,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:39,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:39,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:44,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:44,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 05:23:44,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:23:44,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 05:23:44,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:44,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:23:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:23:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 05:23:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:44,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:44,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:44,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:44,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:44,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:44,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:23:44,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:44,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:44,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:44,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:44,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:44,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 443 proven. 376 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2020-10-14 05:23:44,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078453780] [2020-10-14 05:23:44,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:44,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 05:23:44,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959962336] [2020-10-14 05:23:44,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:23:44,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:44,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:23:44,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:23:44,841 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand 10 states. [2020-10-14 05:23:44,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:44,987 INFO L93 Difference]: Finished difference Result 203 states and 220 transitions. [2020-10-14 05:23:44,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:23:44,988 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2020-10-14 05:23:44,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:44,990 INFO L225 Difference]: With dead ends: 203 [2020-10-14 05:23:44,990 INFO L226 Difference]: Without dead ends: 121 [2020-10-14 05:23:44,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:23:44,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-14 05:23:45,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2020-10-14 05:23:45,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 05:23:45,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 121 transitions. [2020-10-14 05:23:45,016 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 121 transitions. Word has length 102 [2020-10-14 05:23:45,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:45,016 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 121 transitions. [2020-10-14 05:23:45,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:23:45,016 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 121 transitions. [2020-10-14 05:23:45,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 05:23:45,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:45,022 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:45,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:23:45,022 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:45,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:45,023 INFO L82 PathProgramCache]: Analyzing trace with hash 2116236387, now seen corresponding path program 11 times [2020-10-14 05:23:45,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:45,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209888082] [2020-10-14 05:23:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:45,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:45,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:45,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:45,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:45,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:50,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:50,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 05:23:50,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:23:50,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 05:23:50,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:50,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:50,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:23:50,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:23:50,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 05:23:50,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:50,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:50,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:50,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:50,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:50,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:50,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:50,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:50,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:50,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 583 proven. 501 refuted. 0 times theorem prover too weak. 941 trivial. 0 not checked. [2020-10-14 05:23:50,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209888082] [2020-10-14 05:23:50,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:50,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:23:50,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496723681] [2020-10-14 05:23:50,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:23:50,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:50,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:23:50,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:23:50,139 INFO L87 Difference]: Start difference. First operand 115 states and 121 transitions. Second operand 11 states. [2020-10-14 05:23:50,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:50,284 INFO L93 Difference]: Finished difference Result 225 states and 242 transitions. [2020-10-14 05:23:50,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:23:50,284 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 114 [2020-10-14 05:23:50,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:50,286 INFO L225 Difference]: With dead ends: 225 [2020-10-14 05:23:50,286 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 05:23:50,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:23:50,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 05:23:50,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2020-10-14 05:23:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-14 05:23:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2020-10-14 05:23:50,313 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 114 [2020-10-14 05:23:50,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:50,313 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2020-10-14 05:23:50,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:23:50,313 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2020-10-14 05:23:50,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 05:23:50,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:50,319 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:50,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:23:50,320 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:50,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:50,320 INFO L82 PathProgramCache]: Analyzing trace with hash -608663645, now seen corresponding path program 12 times [2020-10-14 05:23:50,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:50,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615434071] [2020-10-14 05:23:50,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:50,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:50,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:50,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:50,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:51,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:55,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:55,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 05:23:55,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:23:55,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 05:23:55,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:55,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:23:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:23:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 05:23:55,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:55,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:55,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:55,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:55,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:55,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:55,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:55,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:55,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:55,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2595 backedges. 743 proven. 644 refuted. 0 times theorem prover too weak. 1208 trivial. 0 not checked. [2020-10-14 05:23:55,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615434071] [2020-10-14 05:23:55,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:55,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:23:55,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028332054] [2020-10-14 05:23:55,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:23:55,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:55,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:23:55,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:23:55,456 INFO L87 Difference]: Start difference. First operand 127 states and 133 transitions. Second operand 12 states. [2020-10-14 05:23:55,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:55,613 INFO L93 Difference]: Finished difference Result 247 states and 264 transitions. [2020-10-14 05:23:55,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:23:55,613 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-10-14 05:23:55,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:55,614 INFO L225 Difference]: With dead ends: 247 [2020-10-14 05:23:55,614 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 05:23:55,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:23:55,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 05:23:55,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2020-10-14 05:23:55,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 05:23:55,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 145 transitions. [2020-10-14 05:23:55,626 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 145 transitions. Word has length 126 [2020-10-14 05:23:55,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:55,626 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 145 transitions. [2020-10-14 05:23:55,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:23:55,626 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 145 transitions. [2020-10-14 05:23:55,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 05:23:55,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:55,628 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:55,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:23:55,628 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:55,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:55,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1462102045, now seen corresponding path program 13 times [2020-10-14 05:23:55,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:55,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572835606] [2020-10-14 05:23:55,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:55,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:55,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:55,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:55,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:56,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:00,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:00,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 05:24:00,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:24:00,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 05:24:00,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:00,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:00,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:24:00,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:24:00,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 05:24:00,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:00,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:24:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:00,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:00,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:00,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:24:00,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:00,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:24:00,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:00,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:24:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:24:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:24:00,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:24:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3237 backedges. 923 proven. 805 refuted. 0 times theorem prover too weak. 1509 trivial. 0 not checked. [2020-10-14 05:24:00,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572835606] [2020-10-14 05:24:00,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:24:00,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:24:00,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369100524] [2020-10-14 05:24:00,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:24:00,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:24:00,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:24:00,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:24:00,785 INFO L87 Difference]: Start difference. First operand 139 states and 145 transitions. Second operand 13 states. [2020-10-14 05:24:00,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:24:00,951 INFO L93 Difference]: Finished difference Result 263 states and 280 transitions. [2020-10-14 05:24:00,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:24:00,952 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-10-14 05:24:00,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:24:00,953 INFO L225 Difference]: With dead ends: 263 [2020-10-14 05:24:00,953 INFO L226 Difference]: Without dead ends: 151 [2020-10-14 05:24:00,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:24:00,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-14 05:24:00,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-10-14 05:24:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 05:24:00,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 157 transitions. [2020-10-14 05:24:00,965 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 157 transitions. Word has length 138 [2020-10-14 05:24:00,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:24:00,965 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 157 transitions. [2020-10-14 05:24:00,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:24:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 157 transitions. [2020-10-14 05:24:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 05:24:00,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:24:00,967 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:24:00,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:24:00,967 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:24:00,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:24:00,968 INFO L82 PathProgramCache]: Analyzing trace with hash -762665693, now seen corresponding path program 14 times [2020-10-14 05:24:00,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:24:00,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965164214] [2020-10-14 05:24:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:24:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:01,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:01,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:01,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 05:24:01,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:01,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-14 05:24:01,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:01,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:24:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:24:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 05:24:01,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:01,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:24:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:01,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:01,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:01,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:24:01,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:01,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:24:01,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:01,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:24:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:24:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:24:01,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3951 backedges. 0 proven. 3351 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2020-10-14 05:24:01,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965164214] [2020-10-14 05:24:01,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:24:01,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 05:24:01,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488428541] [2020-10-14 05:24:01,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:24:01,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:24:01,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:24:01,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:24:01,413 INFO L87 Difference]: Start difference. First operand 151 states and 157 transitions. Second operand 10 states. [2020-10-14 05:24:01,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:24:01,555 INFO L93 Difference]: Finished difference Result 201 states and 209 transitions. [2020-10-14 05:24:01,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:24:01,558 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-10-14 05:24:01,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:24:01,560 INFO L225 Difference]: With dead ends: 201 [2020-10-14 05:24:01,560 INFO L226 Difference]: Without dead ends: 196 [2020-10-14 05:24:01,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:24:01,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-14 05:24:01,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 174. [2020-10-14 05:24:01,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 05:24:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 181 transitions. [2020-10-14 05:24:01,574 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 181 transitions. Word has length 150 [2020-10-14 05:24:01,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:24:01,574 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 181 transitions. [2020-10-14 05:24:01,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:24:01,575 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 181 transitions. [2020-10-14 05:24:01,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 05:24:01,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:24:01,577 INFO L422 BasicCegarLoop]: trace histogram [70, 70, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:24:01,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 05:24:01,577 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:24:01,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:24:01,577 INFO L82 PathProgramCache]: Analyzing trace with hash 147809983, now seen corresponding path program 15 times [2020-10-14 05:24:01,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:24:01,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048061196] [2020-10-14 05:24:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:24:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:01,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:01,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:01,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 05:24:01,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:01,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-14 05:24:01,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:01,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:01,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:24:01,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:24:01,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 05:24:01,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:02,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:24:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:02,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:02,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:02,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:24:02,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:02,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:24:02,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:02,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:24:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:24:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:24:02,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5390 backedges. 0 proven. 4690 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2020-10-14 05:24:02,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048061196] [2020-10-14 05:24:02,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:24:02,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:24:02,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301379980] [2020-10-14 05:24:02,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:24:02,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:24:02,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:24:02,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:24:02,105 INFO L87 Difference]: Start difference. First operand 174 states and 181 transitions. Second operand 11 states. [2020-10-14 05:24:02,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:24:02,265 INFO L93 Difference]: Finished difference Result 224 states and 233 transitions. [2020-10-14 05:24:02,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:24:02,266 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 173 [2020-10-14 05:24:02,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:24:02,267 INFO L225 Difference]: With dead ends: 224 [2020-10-14 05:24:02,268 INFO L226 Difference]: Without dead ends: 219 [2020-10-14 05:24:02,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:24:02,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-14 05:24:02,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 197. [2020-10-14 05:24:02,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-14 05:24:02,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 205 transitions. [2020-10-14 05:24:02,285 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 205 transitions. Word has length 173 [2020-10-14 05:24:02,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:24:02,285 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 205 transitions. [2020-10-14 05:24:02,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:24:02,286 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 205 transitions. [2020-10-14 05:24:02,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 05:24:02,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:24:02,288 INFO L422 BasicCegarLoop]: trace histogram [80, 80, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:24:02,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 05:24:02,288 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:24:02,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:24:02,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1011575389, now seen corresponding path program 16 times [2020-10-14 05:24:02,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:24:02,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098777201] [2020-10-14 05:24:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:24:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:02,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:02,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:02,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 05:24:02,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:02,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-14 05:24:02,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:02,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:24:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:24:02,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-14 05:24:02,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:02,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:24:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:02,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:02,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:02,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:24:02,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:02,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:24:02,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:02,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:02,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:24:02,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:24:02,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:24:02,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7052 backedges. 0 proven. 6252 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-10-14 05:24:03,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098777201] [2020-10-14 05:24:03,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:24:03,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:24:03,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295850255] [2020-10-14 05:24:03,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:24:03,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:24:03,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:24:03,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:24:03,011 INFO L87 Difference]: Start difference. First operand 197 states and 205 transitions. Second operand 12 states. [2020-10-14 05:24:03,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:24:03,180 INFO L93 Difference]: Finished difference Result 247 states and 257 transitions. [2020-10-14 05:24:03,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:24:03,181 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 196 [2020-10-14 05:24:03,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:24:03,183 INFO L225 Difference]: With dead ends: 247 [2020-10-14 05:24:03,183 INFO L226 Difference]: Without dead ends: 242 [2020-10-14 05:24:03,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:24:03,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-14 05:24:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 220. [2020-10-14 05:24:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-14 05:24:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 229 transitions. [2020-10-14 05:24:03,200 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 229 transitions. Word has length 196 [2020-10-14 05:24:03,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:24:03,200 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 229 transitions. [2020-10-14 05:24:03,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:24:03,200 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 229 transitions. [2020-10-14 05:24:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-14 05:24:03,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:24:03,203 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:24:03,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 05:24:03,203 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:24:03,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:24:03,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1346299455, now seen corresponding path program 17 times [2020-10-14 05:24:03,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:24:03,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228412675] [2020-10-14 05:24:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:24:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:03,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:03,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:03,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 05:24:03,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:03,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 725 [2020-10-14 05:24:03,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:03,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:24:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:24:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-14 05:24:03,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:04,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:24:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:04,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:04,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:04,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:24:04,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:04,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:24:04,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:04,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:24:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:24:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:24:04,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8937 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2020-10-14 05:24:04,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228412675] [2020-10-14 05:24:04,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:24:04,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:24:04,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661950894] [2020-10-14 05:24:04,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:24:04,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:24:04,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:24:04,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:24:04,144 INFO L87 Difference]: Start difference. First operand 220 states and 229 transitions. Second operand 13 states. [2020-10-14 05:24:04,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:24:04,326 INFO L93 Difference]: Finished difference Result 248 states and 258 transitions. [2020-10-14 05:24:04,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:24:04,327 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 219 [2020-10-14 05:24:04,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:24:04,329 INFO L225 Difference]: With dead ends: 248 [2020-10-14 05:24:04,329 INFO L226 Difference]: Without dead ends: 243 [2020-10-14 05:24:04,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:24:04,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-14 05:24:04,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-10-14 05:24:04,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-14 05:24:04,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 253 transitions. [2020-10-14 05:24:04,356 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 253 transitions. Word has length 219 [2020-10-14 05:24:04,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:24:04,357 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 253 transitions. [2020-10-14 05:24:04,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:24:04,357 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 253 transitions. [2020-10-14 05:24:04,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 05:24:04,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:24:04,361 INFO L422 BasicCegarLoop]: trace histogram [100, 100, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:24:04,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 05:24:04,362 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:24:04,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:24:04,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1443735075, now seen corresponding path program 18 times [2020-10-14 05:24:04,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:24:04,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479602702] [2020-10-14 05:24:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:24:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:04,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:09,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:09,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 05:24:09,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:09,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 05:24:09,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:09,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:09,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 104 [2020-10-14 05:24:09,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:24:09,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 239 [2020-10-14 05:24:09,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:14,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:24:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:14,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:14,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:14,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:24:14,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:14,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:24:14,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:14,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:14,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:24:14,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:24:14,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:24:14,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 11045 backedges. 11036 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 05:24:14,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479602702] [2020-10-14 05:24:14,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:24:14,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2020-10-14 05:24:14,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142356394] [2020-10-14 05:24:14,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-10-14 05:24:14,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:24:14,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-10-14 05:24:14,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5257, Invalid=5663, Unknown=0, NotChecked=0, Total=10920 [2020-10-14 05:24:14,956 INFO L87 Difference]: Start difference. First operand 243 states and 253 transitions. Second operand 105 states. [2020-10-14 05:24:16,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:24:16,534 INFO L93 Difference]: Finished difference Result 9783 states and 10243 transitions. [2020-10-14 05:24:16,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-10-14 05:24:16,535 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 242 [2020-10-14 05:24:16,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:24:16,536 INFO L225 Difference]: With dead ends: 9783 [2020-10-14 05:24:16,536 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:24:16,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=5261, Invalid=5869, Unknown=0, NotChecked=0, Total=11130 [2020-10-14 05:24:16,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:24:16,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:24:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:24:16,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:24:16,564 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 242 [2020-10-14 05:24:16,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:24:16,565 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:24:16,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-10-14 05:24:16,565 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:24:16,565 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:24:16,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 05:24:16,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:24:18,801 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 681 DAG size of output: 672 [2020-10-14 05:24:55,090 WARN L193 SmtUtils]: Spent 36.26 s on a formula simplification. DAG size of input: 5045 DAG size of output: 1360 [2020-10-14 05:25:01,536 WARN L193 SmtUtils]: Spent 6.41 s on a formula simplification. DAG size of input: 672 DAG size of output: 69 [2020-10-14 05:25:37,849 WARN L193 SmtUtils]: Spent 36.30 s on a formula simplification. DAG size of input: 1339 DAG size of output: 366 [2020-10-14 05:25:37,862 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 05:25:37,862 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:25:37,862 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:25:37,862 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:25:37,862 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:25:37,862 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:25:37,862 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:25:37,863 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-14 05:25:37,863 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:25:37,863 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:25:37,863 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-10-14 05:25:37,863 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 27) no Hoare annotation was computed. [2020-10-14 05:25:37,863 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-14 05:25:37,863 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2020-10-14 05:25:37,866 INFO L264 CegarLoopResult]: At program point L21-3(lines 21 23) the Hoare annotation is: (let ((.cse27 (<= 60 main_~k~0)) (.cse23 (<= 70 main_~k~0)) (.cse28 (<= 10 main_~k~0)) (.cse16 (<= 80 main_~k~0)) (.cse29 (<= 30 main_~k~0)) (.cse30 (<= 20 main_~k~0)) (.cse12 (<= 90 main_~k~0)) (.cse20 (<= 40 main_~k~0)) (.cse6 (<= (+ main_~j~0 2) main_~m~0)) (.cse9 (<= (+ main_~j~0 8) main_~m~0)) (.cse7 (<= (+ main_~i~0 7) main_~n~0)) (.cse18 (<= (+ main_~j~0 5) main_~m~0)) (.cse19 (<= (+ main_~i~0 9) main_~n~0)) (.cse4 (<= (+ main_~i~0 2) main_~n~0)) (.cse24 (<= (+ main_~j~0 1) main_~m~0)) (.cse15 (<= 50 main_~k~0)) (.cse13 (<= (+ main_~j~0 10) main_~m~0)) (.cse2 (<= (+ main_~i~0 10) main_~n~0)) (.cse26 (<= (+ main_~i~0 8) main_~n~0)) (.cse10 (<= (+ main_~i~0 4) main_~n~0)) (.cse8 (<= (+ main_~j~0 7) main_~m~0)) (.cse11 (<= (+ main_~i~0 3) main_~n~0)) (.cse14 (<= (+ main_~i~0 5) main_~n~0)) (.cse5 (<= (+ main_~j~0 9) main_~m~0)) (.cse25 (<= (+ main_~j~0 3) main_~m~0)) (.cse17 (<= (+ main_~i~0 1) main_~n~0)) (.cse0 (<= (+ main_~j~0 6) main_~m~0)) (.cse1 (<= 10 main_~n~0)) (.cse21 (<= (+ main_~i~0 6) main_~n~0)) (.cse3 (<= 10 main_~m~0)) (.cse22 (<= (+ main_~j~0 4) main_~m~0))) (or (and .cse0 (<= 4 main_~k~0) .cse1 .cse2 .cse3) (and .cse1 (<= 81 main_~k~0) .cse3 .cse4 .cse5) (and .cse1 (<= 38 main_~k~0) .cse6 .cse3 .cse7) (and .cse1 .cse2 .cse3 (<= 3 main_~k~0) .cse8) (and .cse9 .cse1 (<= 62 main_~k~0) .cse3 .cse10) (and .cse1 .cse3 (<= 73 main_~k~0) .cse11 .cse8) (and .cse1 .cse12 .cse3 .cse4) (and .cse1 .cse13 .cse14 .cse3 .cse15) (and .cse1 .cse14 .cse6 (<= 58 main_~k~0) .cse3) (and .cse1 .cse13 .cse3 .cse4 .cse16) (and .cse9 .cse1 (<= 92 main_~k~0) .cse17 .cse3) (and .cse18 (<= 15 main_~k~0) .cse1 .cse3 .cse19) (and .cse13 .cse1 .cse20 .cse3 .cse21) (and .cse18 .cse1 (<= 85 main_~k~0) .cse3 .cse4) (and (<= 86 main_~k~0) .cse1 .cse3 .cse4 .cse22) (and .cse1 (<= 13 main_~k~0) .cse3 .cse19 .cse8) (and .cse1 (<= 16 main_~k~0) .cse3 .cse19 .cse22) (and .cse23 .cse1 .cse3 .cse10) (and .cse24 (<= 39 main_~k~0) .cse1 .cse3 .cse7) (and .cse1 (<= 18 main_~k~0) .cse6 .cse3 .cse19) (and .cse1 (<= 41 main_~k~0) .cse21 .cse3 .cse5) (and .cse0 .cse1 (<= 14 main_~k~0) .cse3 .cse19) (and .cse1 .cse25 (<= 7 main_~k~0) .cse2 .cse3) (and .cse18 .cse1 .cse3 .cse10 (<= 65 main_~k~0)) (and .cse1 .cse3 .cse5 .cse10 (<= 61 main_~k~0)) (and .cse0 .cse1 (<= 74 main_~k~0) .cse3 .cse11) (and (<= 31 main_~k~0) .cse1 .cse3 .cse5 .cse7) (and (<= 1 main_~k~0) .cse1 .cse2 .cse3 .cse5) (and .cse18 .cse1 .cse2 .cse3 (<= 5 main_~k~0)) (and .cse9 .cse1 (<= 32 main_~k~0) .cse3 .cse7) (and (<= 72 main_~k~0) .cse9 .cse1 .cse3 .cse11) (and .cse26 .cse1 .cse25 .cse3 (<= 27 main_~k~0)) (and .cse27 .cse1 .cse13 .cse3 .cse10) (and .cse9 .cse26 .cse1 .cse3 (<= 22 main_~k~0)) (and .cse24 .cse1 (<= 9 main_~k~0) .cse2 .cse3) (and .cse24 .cse1 .cse14 .cse3 (<= 59 main_~k~0)) (and .cse1 .cse14 .cse3 (<= 53 main_~k~0) .cse8) (and (<= 93 main_~k~0) .cse1 .cse17 .cse3 .cse8) (and .cse26 .cse1 .cse6 .cse3 (<= 28 main_~k~0)) (and .cse24 .cse1 .cse17 .cse3 (<= 99 main_~k~0)) (and .cse24 (<= 49 main_~k~0) .cse1 .cse21 .cse3) (and .cse18 .cse1 .cse21 .cse3 (<= 45 main_~k~0)) (and (<= 67 main_~k~0) .cse1 .cse25 .cse3 .cse10) (and .cse27 .cse1 .cse14 .cse3) (and .cse1 (<= 83 main_~k~0) .cse3 .cse4 .cse8) (and .cse23 .cse1 .cse13 .cse3 .cse11) (and .cse24 .cse1 (<= 79 main_~k~0) .cse3 .cse11) (and .cse1 .cse17 .cse3 (<= 100 main_~k~0)) (and .cse28 .cse1 .cse2 .cse3) (and .cse26 .cse1 .cse3 .cse29) (and .cse28 .cse13 .cse1 .cse3 .cse19) (and .cse24 .cse1 (<= 19 main_~k~0) .cse3 .cse19) (and .cse26 .cse13 .cse1 .cse3 .cse30) (and .cse18 (<= 35 main_~k~0) .cse1 .cse3 .cse7) (and .cse18 (<= 95 main_~k~0) .cse1 .cse17 .cse3) (and .cse1 .cse3 .cse16 .cse11) (and .cse18 (<= 55 main_~k~0) .cse1 .cse14 .cse3) (and .cse0 (<= 64 main_~k~0) .cse1 .cse3 .cse10) (and .cse26 .cse1 (<= 21 main_~k~0) .cse3 .cse5) (and .cse1 .cse6 .cse3 (<= 78 main_~k~0) .cse11) (and .cse0 .cse1 .cse3 .cse7 (<= 34 main_~k~0)) (and .cse1 .cse6 .cse3 .cse10 (<= 68 main_~k~0)) (and (<= 6 main_~k~0) .cse1 .cse2 .cse3 .cse22) (and (<= 88 main_~k~0) .cse1 .cse6 .cse3 .cse4) (and .cse13 .cse1 .cse3 .cse7 .cse29) (and .cse1 .cse3 .cse19 .cse30) (and .cse9 (<= 2 main_~k~0) .cse1 .cse2 .cse3) (and (<= 56 main_~k~0) .cse1 .cse14 .cse3 .cse22) (and .cse18 .cse26 .cse1 .cse3 (<= 25 main_~k~0)) (and .cse1 (<= 71 main_~k~0) .cse3 .cse5 .cse11) (and .cse0 .cse26 .cse1 .cse3 (<= 24 main_~k~0)) (and .cse1 .cse13 .cse12 .cse17 .cse3) (and .cse1 .cse3 .cse7 (<= 36 main_~k~0) .cse22) (and .cse9 .cse1 .cse3 .cse4 (<= 82 main_~k~0)) (and (<= 33 main_~k~0) .cse1 .cse3 .cse7 .cse8) (and .cse9 .cse1 (<= 42 main_~k~0) .cse21 .cse3) (and .cse1 .cse25 .cse3 .cse19 (<= 17 main_~k~0)) (and .cse9 .cse1 .cse14 (<= 52 main_~k~0) .cse3) (and .cse26 .cse24 .cse1 (<= 29 main_~k~0) .cse3) (and .cse1 .cse20 .cse3 .cse7) (and .cse1 .cse21 (<= 48 main_~k~0) .cse6 .cse3) (and (<= 43 main_~k~0) .cse1 .cse21 .cse3 .cse8) (and (<= 98 main_~k~0) .cse1 .cse17 .cse6 .cse3) (and (<= 91 main_~k~0) .cse1 .cse17 .cse3 .cse5) (and .cse1 .cse3 .cse10 (<= 66 main_~k~0) .cse22) (and .cse1 (<= 8 main_~k~0) .cse6 .cse2 .cse3) (and .cse9 .cse1 (<= 12 main_~k~0) .cse3 .cse19) (and .cse24 .cse1 .cse3 .cse4 (<= 89 main_~k~0)) (and .cse1 (<= 87 main_~k~0) .cse25 .cse3 .cse4) (and (<= 37 main_~k~0) .cse1 .cse25 .cse3 .cse7) (and .cse1 .cse25 .cse21 .cse3 (<= 47 main_~k~0)) (and (<= 96 main_~k~0) .cse1 .cse17 .cse3 .cse22) (and .cse0 .cse1 .cse14 (<= 54 main_~k~0) .cse3) (and .cse1 .cse14 .cse25 (<= 57 main_~k~0) .cse3) (and .cse18 .cse1 .cse3 .cse11 (<= 75 main_~k~0)) (and .cse26 (<= 26 main_~k~0) .cse1 .cse3 .cse22) (and .cse1 .cse3 .cse5 .cse19 (<= 11 main_~k~0)) (and .cse0 .cse1 .cse3 (<= 84 main_~k~0) .cse4) (and (<= 77 main_~k~0) .cse1 .cse25 .cse3 .cse11) (and .cse24 (<= 69 main_~k~0) .cse1 .cse3 .cse10) (and .cse1 .cse21 .cse3 .cse15) (and .cse1 .cse13 (<= 0 main_~k~0) .cse2 .cse3) (and .cse26 (<= 23 main_~k~0) .cse1 .cse3 .cse8) (and .cse1 (<= 63 main_~k~0) .cse3 .cse10 .cse8) (and .cse1 (<= 76 main_~k~0) .cse3 .cse11 .cse22) (and (<= 51 main_~k~0) .cse1 .cse14 .cse3 .cse5) (and (<= 97 main_~k~0) .cse1 .cse25 .cse17 .cse3) (and .cse0 (<= 94 main_~k~0) .cse1 .cse17 .cse3) (and (<= 44 main_~k~0) .cse0 .cse1 .cse21 .cse3) (and .cse1 .cse21 .cse3 (<= 46 main_~k~0) .cse22))) [2020-10-14 05:25:37,866 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 27) no Hoare annotation was computed. [2020-10-14 05:25:37,866 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 27) the Hoare annotation is: true [2020-10-14 05:25:37,866 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-14 05:25:37,866 INFO L268 CegarLoopResult]: For program point L20-2(lines 20 24) no Hoare annotation was computed. [2020-10-14 05:25:37,867 INFO L264 CegarLoopResult]: At program point L20-3(lines 20 24) the Hoare annotation is: (let ((.cse0 (<= 10 main_~n~0)) (.cse1 (<= 10 main_~m~0))) (or (and .cse0 (<= 0 main_~k~0) (<= (+ main_~i~0 10) main_~n~0) .cse1) (and (<= (+ main_~i~0 8) main_~n~0) .cse0 .cse1 (<= 20 main_~k~0)) (and .cse0 (<= 40 main_~k~0) (<= (+ main_~i~0 6) main_~n~0) .cse1) (and (<= 10 main_~k~0) .cse0 .cse1 (<= (+ main_~i~0 9) main_~n~0)) (and (<= 60 main_~k~0) .cse0 .cse1 (<= (+ main_~i~0 4) main_~n~0)) (and .cse0 .cse1 (<= (+ main_~i~0 2) main_~n~0) (<= 80 main_~k~0)) (and .cse0 (<= 90 main_~k~0) (<= (+ main_~i~0 1) main_~n~0) .cse1) (and .cse0 .cse1 (<= (+ main_~i~0 7) main_~n~0) (<= 30 main_~k~0)) (and .cse0 (<= 100 main_~k~0) .cse1) (and (<= 70 main_~k~0) .cse0 .cse1 (<= (+ main_~i~0 3) main_~n~0)) (and .cse0 (<= (+ main_~i~0 5) main_~n~0) .cse1 (<= 50 main_~k~0)))) [2020-10-14 05:25:37,867 INFO L264 CegarLoopResult]: At program point L20-4(lines 20 24) the Hoare annotation is: (and (<= 10 main_~n~0) (<= 100 main_~k~0) (<= 10 main_~m~0)) [2020-10-14 05:25:37,867 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-14 05:25:37,867 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-14 05:25:37,867 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-14 05:25:37,867 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-14 05:25:37,867 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-14 05:25:37,867 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-14 05:25:37,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:25:37 BoogieIcfgContainer [2020-10-14 05:25:37,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:25:37,917 INFO L168 Benchmark]: Toolchain (without parser) took 157599.44 ms. Allocated memory was 148.9 MB in the beginning and 2.3 GB in the end (delta: 2.1 GB). Free memory was 104.7 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2020-10-14 05:25:37,918 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 148.9 MB. Free memory was 123.5 MB in the beginning and 123.2 MB in the end (delta: 210.5 kB). Peak memory consumption was 210.5 kB. Max. memory is 7.1 GB. [2020-10-14 05:25:37,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.48 ms. Allocated memory is still 148.9 MB. Free memory was 104.5 MB in the beginning and 95.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-10-14 05:25:37,919 INFO L168 Benchmark]: Boogie Preprocessor took 113.54 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 94.9 MB in the beginning and 183.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-14 05:25:37,919 INFO L168 Benchmark]: RCFGBuilder took 265.85 ms. Allocated memory is still 205.5 MB. Free memory was 183.5 MB in the beginning and 170.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-10-14 05:25:37,921 INFO L168 Benchmark]: TraceAbstraction took 157000.63 ms. Allocated memory was 205.5 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 170.1 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2020-10-14 05:25:37,927 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 148.9 MB. Free memory was 123.5 MB in the beginning and 123.2 MB in the end (delta: 210.5 kB). Peak memory consumption was 210.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 214.48 ms. Allocated memory is still 148.9 MB. Free memory was 104.5 MB in the beginning and 95.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.54 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 94.9 MB in the beginning and 183.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 265.85 ms. Allocated memory is still 205.5 MB. Free memory was 183.5 MB in the beginning and 170.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 157000.63 ms. Allocated memory was 205.5 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 170.1 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((((((((((10 <= n && 0 <= k) && i + 10 <= n) && 10 <= m) || (((i + 8 <= n && 10 <= n) && 10 <= m) && 20 <= k)) || (((10 <= n && 40 <= k) && i + 6 <= n) && 10 <= m)) || (((10 <= k && 10 <= n) && 10 <= m) && i + 9 <= n)) || (((60 <= k && 10 <= n) && 10 <= m) && i + 4 <= n)) || (((10 <= n && 10 <= m) && i + 2 <= n) && 80 <= k)) || (((10 <= n && 90 <= k) && i + 1 <= n) && 10 <= m)) || (((10 <= n && 10 <= m) && i + 7 <= n) && 30 <= k)) || ((10 <= n && 100 <= k) && 10 <= m)) || (((70 <= k && 10 <= n) && 10 <= m) && i + 3 <= n)) || (((10 <= n && i + 5 <= n) && 10 <= m) && 50 <= k) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((j + 6 <= m && 4 <= k) && 10 <= n) && i + 10 <= n) && 10 <= m) || ((((10 <= n && 81 <= k) && 10 <= m) && i + 2 <= n) && j + 9 <= m)) || ((((10 <= n && 38 <= k) && j + 2 <= m) && 10 <= m) && i + 7 <= n)) || ((((10 <= n && i + 10 <= n) && 10 <= m) && 3 <= k) && j + 7 <= m)) || ((((j + 8 <= m && 10 <= n) && 62 <= k) && 10 <= m) && i + 4 <= n)) || ((((10 <= n && 10 <= m) && 73 <= k) && i + 3 <= n) && j + 7 <= m)) || (((10 <= n && 90 <= k) && 10 <= m) && i + 2 <= n)) || ((((10 <= n && j + 10 <= m) && i + 5 <= n) && 10 <= m) && 50 <= k)) || ((((10 <= n && i + 5 <= n) && j + 2 <= m) && 58 <= k) && 10 <= m)) || ((((10 <= n && j + 10 <= m) && 10 <= m) && i + 2 <= n) && 80 <= k)) || ((((j + 8 <= m && 10 <= n) && 92 <= k) && i + 1 <= n) && 10 <= m)) || ((((j + 5 <= m && 15 <= k) && 10 <= n) && 10 <= m) && i + 9 <= n)) || ((((j + 10 <= m && 10 <= n) && 40 <= k) && 10 <= m) && i + 6 <= n)) || ((((j + 5 <= m && 10 <= n) && 85 <= k) && 10 <= m) && i + 2 <= n)) || ((((86 <= k && 10 <= n) && 10 <= m) && i + 2 <= n) && j + 4 <= m)) || ((((10 <= n && 13 <= k) && 10 <= m) && i + 9 <= n) && j + 7 <= m)) || ((((10 <= n && 16 <= k) && 10 <= m) && i + 9 <= n) && j + 4 <= m)) || (((70 <= k && 10 <= n) && 10 <= m) && i + 4 <= n)) || ((((j + 1 <= m && 39 <= k) && 10 <= n) && 10 <= m) && i + 7 <= n)) || ((((10 <= n && 18 <= k) && j + 2 <= m) && 10 <= m) && i + 9 <= n)) || ((((10 <= n && 41 <= k) && i + 6 <= n) && 10 <= m) && j + 9 <= m)) || ((((j + 6 <= m && 10 <= n) && 14 <= k) && 10 <= m) && i + 9 <= n)) || ((((10 <= n && j + 3 <= m) && 7 <= k) && i + 10 <= n) && 10 <= m)) || ((((j + 5 <= m && 10 <= n) && 10 <= m) && i + 4 <= n) && 65 <= k)) || ((((10 <= n && 10 <= m) && j + 9 <= m) && i + 4 <= n) && 61 <= k)) || ((((j + 6 <= m && 10 <= n) && 74 <= k) && 10 <= m) && i + 3 <= n)) || ((((31 <= k && 10 <= n) && 10 <= m) && j + 9 <= m) && i + 7 <= n)) || ((((1 <= k && 10 <= n) && i + 10 <= n) && 10 <= m) && j + 9 <= m)) || ((((j + 5 <= m && 10 <= n) && i + 10 <= n) && 10 <= m) && 5 <= k)) || ((((j + 8 <= m && 10 <= n) && 32 <= k) && 10 <= m) && i + 7 <= n)) || ((((72 <= k && j + 8 <= m) && 10 <= n) && 10 <= m) && i + 3 <= n)) || ((((i + 8 <= n && 10 <= n) && j + 3 <= m) && 10 <= m) && 27 <= k)) || ((((60 <= k && 10 <= n) && j + 10 <= m) && 10 <= m) && i + 4 <= n)) || ((((j + 8 <= m && i + 8 <= n) && 10 <= n) && 10 <= m) && 22 <= k)) || ((((j + 1 <= m && 10 <= n) && 9 <= k) && i + 10 <= n) && 10 <= m)) || ((((j + 1 <= m && 10 <= n) && i + 5 <= n) && 10 <= m) && 59 <= k)) || ((((10 <= n && i + 5 <= n) && 10 <= m) && 53 <= k) && j + 7 <= m)) || ((((93 <= k && 10 <= n) && i + 1 <= n) && 10 <= m) && j + 7 <= m)) || ((((i + 8 <= n && 10 <= n) && j + 2 <= m) && 10 <= m) && 28 <= k)) || ((((j + 1 <= m && 10 <= n) && i + 1 <= n) && 10 <= m) && 99 <= k)) || ((((j + 1 <= m && 49 <= k) && 10 <= n) && i + 6 <= n) && 10 <= m)) || ((((j + 5 <= m && 10 <= n) && i + 6 <= n) && 10 <= m) && 45 <= k)) || ((((67 <= k && 10 <= n) && j + 3 <= m) && 10 <= m) && i + 4 <= n)) || (((60 <= k && 10 <= n) && i + 5 <= n) && 10 <= m)) || ((((10 <= n && 83 <= k) && 10 <= m) && i + 2 <= n) && j + 7 <= m)) || ((((70 <= k && 10 <= n) && j + 10 <= m) && 10 <= m) && i + 3 <= n)) || ((((j + 1 <= m && 10 <= n) && 79 <= k) && 10 <= m) && i + 3 <= n)) || (((10 <= n && i + 1 <= n) && 10 <= m) && 100 <= k)) || (((10 <= k && 10 <= n) && i + 10 <= n) && 10 <= m)) || (((i + 8 <= n && 10 <= n) && 10 <= m) && 30 <= k)) || ((((10 <= k && j + 10 <= m) && 10 <= n) && 10 <= m) && i + 9 <= n)) || ((((j + 1 <= m && 10 <= n) && 19 <= k) && 10 <= m) && i + 9 <= n)) || ((((i + 8 <= n && j + 10 <= m) && 10 <= n) && 10 <= m) && 20 <= k)) || ((((j + 5 <= m && 35 <= k) && 10 <= n) && 10 <= m) && i + 7 <= n)) || ((((j + 5 <= m && 95 <= k) && 10 <= n) && i + 1 <= n) && 10 <= m)) || (((10 <= n && 10 <= m) && 80 <= k) && i + 3 <= n)) || ((((j + 5 <= m && 55 <= k) && 10 <= n) && i + 5 <= n) && 10 <= m)) || ((((j + 6 <= m && 64 <= k) && 10 <= n) && 10 <= m) && i + 4 <= n)) || ((((i + 8 <= n && 10 <= n) && 21 <= k) && 10 <= m) && j + 9 <= m)) || ((((10 <= n && j + 2 <= m) && 10 <= m) && 78 <= k) && i + 3 <= n)) || ((((j + 6 <= m && 10 <= n) && 10 <= m) && i + 7 <= n) && 34 <= k)) || ((((10 <= n && j + 2 <= m) && 10 <= m) && i + 4 <= n) && 68 <= k)) || ((((6 <= k && 10 <= n) && i + 10 <= n) && 10 <= m) && j + 4 <= m)) || ((((88 <= k && 10 <= n) && j + 2 <= m) && 10 <= m) && i + 2 <= n)) || ((((j + 10 <= m && 10 <= n) && 10 <= m) && i + 7 <= n) && 30 <= k)) || (((10 <= n && 10 <= m) && i + 9 <= n) && 20 <= k)) || ((((j + 8 <= m && 2 <= k) && 10 <= n) && i + 10 <= n) && 10 <= m)) || ((((56 <= k && 10 <= n) && i + 5 <= n) && 10 <= m) && j + 4 <= m)) || ((((j + 5 <= m && i + 8 <= n) && 10 <= n) && 10 <= m) && 25 <= k)) || ((((10 <= n && 71 <= k) && 10 <= m) && j + 9 <= m) && i + 3 <= n)) || ((((j + 6 <= m && i + 8 <= n) && 10 <= n) && 10 <= m) && 24 <= k)) || ((((10 <= n && j + 10 <= m) && 90 <= k) && i + 1 <= n) && 10 <= m)) || ((((10 <= n && 10 <= m) && i + 7 <= n) && 36 <= k) && j + 4 <= m)) || ((((j + 8 <= m && 10 <= n) && 10 <= m) && i + 2 <= n) && 82 <= k)) || ((((33 <= k && 10 <= n) && 10 <= m) && i + 7 <= n) && j + 7 <= m)) || ((((j + 8 <= m && 10 <= n) && 42 <= k) && i + 6 <= n) && 10 <= m)) || ((((10 <= n && j + 3 <= m) && 10 <= m) && i + 9 <= n) && 17 <= k)) || ((((j + 8 <= m && 10 <= n) && i + 5 <= n) && 52 <= k) && 10 <= m)) || ((((i + 8 <= n && j + 1 <= m) && 10 <= n) && 29 <= k) && 10 <= m)) || (((10 <= n && 40 <= k) && 10 <= m) && i + 7 <= n)) || ((((10 <= n && i + 6 <= n) && 48 <= k) && j + 2 <= m) && 10 <= m)) || ((((43 <= k && 10 <= n) && i + 6 <= n) && 10 <= m) && j + 7 <= m)) || ((((98 <= k && 10 <= n) && i + 1 <= n) && j + 2 <= m) && 10 <= m)) || ((((91 <= k && 10 <= n) && i + 1 <= n) && 10 <= m) && j + 9 <= m)) || ((((10 <= n && 10 <= m) && i + 4 <= n) && 66 <= k) && j + 4 <= m)) || ((((10 <= n && 8 <= k) && j + 2 <= m) && i + 10 <= n) && 10 <= m)) || ((((j + 8 <= m && 10 <= n) && 12 <= k) && 10 <= m) && i + 9 <= n)) || ((((j + 1 <= m && 10 <= n) && 10 <= m) && i + 2 <= n) && 89 <= k)) || ((((10 <= n && 87 <= k) && j + 3 <= m) && 10 <= m) && i + 2 <= n)) || ((((37 <= k && 10 <= n) && j + 3 <= m) && 10 <= m) && i + 7 <= n)) || ((((10 <= n && j + 3 <= m) && i + 6 <= n) && 10 <= m) && 47 <= k)) || ((((96 <= k && 10 <= n) && i + 1 <= n) && 10 <= m) && j + 4 <= m)) || ((((j + 6 <= m && 10 <= n) && i + 5 <= n) && 54 <= k) && 10 <= m)) || ((((10 <= n && i + 5 <= n) && j + 3 <= m) && 57 <= k) && 10 <= m)) || ((((j + 5 <= m && 10 <= n) && 10 <= m) && i + 3 <= n) && 75 <= k)) || ((((i + 8 <= n && 26 <= k) && 10 <= n) && 10 <= m) && j + 4 <= m)) || ((((10 <= n && 10 <= m) && j + 9 <= m) && i + 9 <= n) && 11 <= k)) || ((((j + 6 <= m && 10 <= n) && 10 <= m) && 84 <= k) && i + 2 <= n)) || ((((77 <= k && 10 <= n) && j + 3 <= m) && 10 <= m) && i + 3 <= n)) || ((((j + 1 <= m && 69 <= k) && 10 <= n) && 10 <= m) && i + 4 <= n)) || (((10 <= n && i + 6 <= n) && 10 <= m) && 50 <= k)) || ((((10 <= n && j + 10 <= m) && 0 <= k) && i + 10 <= n) && 10 <= m)) || ((((i + 8 <= n && 23 <= k) && 10 <= n) && 10 <= m) && j + 7 <= m)) || ((((10 <= n && 63 <= k) && 10 <= m) && i + 4 <= n) && j + 7 <= m)) || ((((10 <= n && 76 <= k) && 10 <= m) && i + 3 <= n) && j + 4 <= m)) || ((((51 <= k && 10 <= n) && i + 5 <= n) && 10 <= m) && j + 9 <= m)) || ((((97 <= k && 10 <= n) && j + 3 <= m) && i + 1 <= n) && 10 <= m)) || ((((j + 6 <= m && 94 <= k) && 10 <= n) && i + 1 <= n) && 10 <= m)) || ((((44 <= k && j + 6 <= m) && 10 <= n) && i + 6 <= n) && 10 <= m)) || ((((10 <= n && i + 6 <= n) && 10 <= m) && 46 <= k) && j + 4 <= m) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 75.5s, OverallIterations: 21, TraceHistogramMax: 100, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 81.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 674 SDtfs, 952 SDslu, 2264 SDs, 0 SdLazy, 955 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 142 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 28 PreInvPairs, 5145 NumberOfFragments, 2327 HoareAnnotationTreeSize, 28 FomulaSimplifications, 4861074 FormulaSimplificationTreeSizeReduction, 38.5s HoareSimplificationTime, 8 FomulaSimplificationsInter, 27573 FormulaSimplificationTreeSizeReductionInter, 42.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 70.2s InterpolantComputationTime, 1965 NumberOfCodeBlocks, 1965 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1944 ConstructedInterpolants, 0 QuantifiedInterpolants, 1072162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 2 PerfectInterpolantSequences, 23047/48781 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...