/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/recursive/Ackermann01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:23:22,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:23:22,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:23:22,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:23:22,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:23:22,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:23:22,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:23:22,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:23:22,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:23:22,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:23:22,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:23:22,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:23:22,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:23:22,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:23:22,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:23:22,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:23:22,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:23:22,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:23:22,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:23:22,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:23:22,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:23:22,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:23:22,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:23:22,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:23:22,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:23:22,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:23:22,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:23:22,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:23:22,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:23:22,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:23:22,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:23:22,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:23:22,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:23:22,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:23:22,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:23:22,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:23:22,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:23:22,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:23:22,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:23:22,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:23:22,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:23:22,999 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 07:23:23,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:23:23,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:23:23,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:23:23,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:23:23,022 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:23:23,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:23:23,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:23:23,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:23:23,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:23:23,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:23:23,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:23:23,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:23:23,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:23:23,024 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:23:23,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:23:23,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:23:23,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:23:23,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:23:23,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:23:23,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:23:23,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:23:23,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:23:23,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:23:23,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:23:23,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:23:23,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:23:23,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:23:23,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:23:23,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:23:23,027 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 07:23:23,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:23:23,350 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:23:23,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:23:23,362 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:23:23,362 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:23:23,363 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-10-14 07:23:23,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/205a64363/b8e150fec27a4aef9a7872ff75365e54/FLAG5a8e19e50 [2020-10-14 07:23:23,865 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:23:23,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-10-14 07:23:23,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/205a64363/b8e150fec27a4aef9a7872ff75365e54/FLAG5a8e19e50 [2020-10-14 07:23:23,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/205a64363/b8e150fec27a4aef9a7872ff75365e54 [2020-10-14 07:23:23,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:23:23,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:23:23,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:23:23,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:23:23,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:23:23,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:23:23" (1/1) ... [2020-10-14 07:23:23,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176ea22d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:23, skipping insertion in model container [2020-10-14 07:23:23,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:23:23" (1/1) ... [2020-10-14 07:23:23,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:23:23,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:23:24,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:23:24,190 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:23:24,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:23:24,230 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:23:24,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:24 WrapperNode [2020-10-14 07:23:24,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:23:24,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:23:24,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:23:24,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:23:24,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:24" (1/1) ... [2020-10-14 07:23:24,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:24" (1/1) ... [2020-10-14 07:23:24,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:24" (1/1) ... [2020-10-14 07:23:24,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:24" (1/1) ... [2020-10-14 07:23:24,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:24" (1/1) ... [2020-10-14 07:23:24,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:24" (1/1) ... [2020-10-14 07:23:24,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:24" (1/1) ... [2020-10-14 07:23:24,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:23:24,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:23:24,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:23:24,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:23:24,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:24" (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 07:23:24,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:23:24,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:23:24,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-10-14 07:23:24,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:23:24,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:23:24,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 07:23:24,477 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-10-14 07:23:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:23:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:23:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:23:24,670 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:23:24,671 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 07:23:24,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:23:24 BoogieIcfgContainer [2020-10-14 07:23:24,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:23:24,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:23:24,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:23:24,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:23:24,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:23:23" (1/3) ... [2020-10-14 07:23:24,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e606dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:23:24, skipping insertion in model container [2020-10-14 07:23:24,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:24" (2/3) ... [2020-10-14 07:23:24,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e606dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:23:24, skipping insertion in model container [2020-10-14 07:23:24,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:23:24" (3/3) ... [2020-10-14 07:23:24,683 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2020-10-14 07:23:24,693 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:23:24,700 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:23:24,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:23:24,737 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:23:24,738 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:23:24,738 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:23:24,738 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:23:24,738 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:23:24,738 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:23:24,738 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:23:24,739 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:23:24,765 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-14 07:23:24,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 07:23:24,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:24,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:24,772 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:24,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:24,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1796234678, now seen corresponding path program 1 times [2020-10-14 07:23:24,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:24,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157894514] [2020-10-14 07:23:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:25,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:25,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 07:23:25,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:25,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-14 07:23:25,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:25,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:25,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:23:25,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 07:23:25,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:23:25,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 07:23:25,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:25,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:25,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:25,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:23:25,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:25,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:23:25,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:25,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:25,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:25,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:25,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:23:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:25,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:25,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:25,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:25,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:25,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:23:25,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:25,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:23:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:23:25,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:25,289 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 07:23:25,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157894514] [2020-10-14 07:23:25,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:23:25,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 07:23:25,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184308123] [2020-10-14 07:23:25,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:23:25,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:25,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:23:25,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:23:25,325 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2020-10-14 07:23:25,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:25,520 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2020-10-14 07:23:25,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:23:25,523 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-14 07:23:25,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:25,534 INFO L225 Difference]: With dead ends: 39 [2020-10-14 07:23:25,535 INFO L226 Difference]: Without dead ends: 25 [2020-10-14 07:23:25,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:23:25,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-14 07:23:25,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-14 07:23:25,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 07:23:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-10-14 07:23:25,593 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 15 [2020-10-14 07:23:25,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:25,593 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-10-14 07:23:25,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:23:25,594 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-10-14 07:23:25,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 07:23:25,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:25,597 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:25,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:23:25,597 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:25,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:25,598 INFO L82 PathProgramCache]: Analyzing trace with hash -895156504, now seen corresponding path program 1 times [2020-10-14 07:23:25,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:25,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562625976] [2020-10-14 07:23:25,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:25,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:25,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:25,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:23:25,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:25,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 07:23:25,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:25,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:25,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:23:25,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 07:23:25,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 07:23:25,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:25,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:25,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:25,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:25,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:23:25,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:25,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:23:25,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:25,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:25,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:23:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:25,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:25,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:25,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:23:25,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:25,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 07:23:25,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:25,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:23:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:23:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:25,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:25,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:25,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:25,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:25,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 07:23:25,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:25,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:23:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:26,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:23:26,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 07:23:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 07:23:26,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562625976] [2020-10-14 07:23:26,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:23:26,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:23:26,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95225919] [2020-10-14 07:23:26,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:23:26,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:26,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:23:26,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:23:26,050 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 8 states. [2020-10-14 07:23:26,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:26,201 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2020-10-14 07:23:26,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:23:26,202 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-14 07:23:26,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:26,204 INFO L225 Difference]: With dead ends: 32 [2020-10-14 07:23:26,204 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 07:23:26,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:23:26,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 07:23:26,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-14 07:23:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 07:23:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-10-14 07:23:26,215 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 22 [2020-10-14 07:23:26,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:26,215 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-10-14 07:23:26,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:23:26,215 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-10-14 07:23:26,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 07:23:26,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:26,217 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:26,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:23:26,218 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:26,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:26,218 INFO L82 PathProgramCache]: Analyzing trace with hash 408363011, now seen corresponding path program 1 times [2020-10-14 07:23:26,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:26,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76417796] [2020-10-14 07:23:26,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:26,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:26,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:26,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:26,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:23:26,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:23:26,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 07:23:26,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:26,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:23:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:23:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:23:26,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:26,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:26,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:26,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:23:26,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:26,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:23:26,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:26,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:26,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:26,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:23:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:26,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:26,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:26,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:26,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:23:26,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:23:26,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 07:23:26,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:26,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:23:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:23:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:23:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:26,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:26,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:26,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:26,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:26,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:26,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 07:23:26,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:26,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:26,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:23:26,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:23:26,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:23:26,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:23:26,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:23:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:26,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:26,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:26,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:26,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:26,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:23:26,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:26,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:26,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:26,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 07:23:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:26,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 07:23:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 07:23:26,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76417796] [2020-10-14 07:23:26,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:23:26,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:23:26,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424533106] [2020-10-14 07:23:26,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:23:26,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:26,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:23:26,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:26,760 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 5 states. [2020-10-14 07:23:26,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:26,870 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2020-10-14 07:23:26,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:23:26,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-14 07:23:26,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:26,874 INFO L225 Difference]: With dead ends: 46 [2020-10-14 07:23:26,874 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 07:23:26,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:23:26,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 07:23:26,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-14 07:23:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 07:23:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-10-14 07:23:26,899 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 28 [2020-10-14 07:23:26,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:26,902 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-10-14 07:23:26,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:23:26,902 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-10-14 07:23:26,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 07:23:26,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:26,906 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:26,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:23:26,907 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:26,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:26,908 INFO L82 PathProgramCache]: Analyzing trace with hash 718507263, now seen corresponding path program 1 times [2020-10-14 07:23:26,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:26,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646455572] [2020-10-14 07:23:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:26,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:27,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:27,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:23:27,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-14 07:23:27,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:27,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:23:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 07:23:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:23:27,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:27,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:27,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:27,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:27,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:23:27,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:27,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:23:27,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:27,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:27,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:27,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:23:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:27,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:27,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:27,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 07:23:27,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 07:23:27,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:27,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:23:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 07:23:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:27,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:27,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:27,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:27,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:23:27,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:27,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 07:23:27,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:27,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:23:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:23:27,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:27,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:27,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:27,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:27,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:27,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:27,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:23:27,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:27,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:27,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:23:27,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:27,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:23:27,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:27,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 07:23:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:27,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:27,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:27,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:27,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:27,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 07:23:27,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:27,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:27,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:23:27,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:27,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:23:27,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 07:23:27,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646455572] [2020-10-14 07:23:27,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:23:27,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:23:27,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226607617] [2020-10-14 07:23:27,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:23:27,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:27,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:23:27,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:23:27,515 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 13 states. [2020-10-14 07:23:28,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:28,172 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2020-10-14 07:23:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 07:23:28,173 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-14 07:23:28,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:28,177 INFO L225 Difference]: With dead ends: 54 [2020-10-14 07:23:28,177 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 07:23:28,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2020-10-14 07:23:28,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 07:23:28,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2020-10-14 07:23:28,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 07:23:28,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 53 transitions. [2020-10-14 07:23:28,193 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 53 transitions. Word has length 35 [2020-10-14 07:23:28,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:28,193 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 53 transitions. [2020-10-14 07:23:28,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:23:28,194 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 53 transitions. [2020-10-14 07:23:28,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 07:23:28,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:28,196 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:28,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:23:28,196 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:28,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:28,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1711672813, now seen corresponding path program 2 times [2020-10-14 07:23:28,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:28,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632565893] [2020-10-14 07:23:28,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:28,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:28,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:28,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 07:23:28,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:28,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 07:23:28,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:28,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:28,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:23:28,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 07:23:28,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 07:23:28,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:28,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:28,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:28,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:28,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:23:28,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:28,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:23:28,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:28,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:28,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:28,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:23:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:28,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:28,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:28,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:23:28,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:28,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 07:23:28,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:28,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:23:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 07:23:28,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:28,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:28,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:28,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:28,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 07:23:28,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:28,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 07:23:28,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:28,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:23:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 07:23:28,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:28,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:28,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:28,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:28,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:23:28,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:28,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 07:23:28,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:28,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:28,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:23:28,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:28,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:23:28,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:28,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:28,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:28,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:28,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:28,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:23:28,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:28,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:23:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:23:28,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:28,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 07:23:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:28,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:28,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:28,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:28,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:28,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 07:23:28,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:28,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:28,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:23:28,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:28,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:23:28,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 07:23:28,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632565893] [2020-10-14 07:23:28,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:23:28,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:23:28,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866379320] [2020-10-14 07:23:28,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:23:28,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:28,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:23:28,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:23:28,897 INFO L87 Difference]: Start difference. First operand 36 states and 53 transitions. Second operand 13 states. [2020-10-14 07:23:29,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:29,190 INFO L93 Difference]: Finished difference Result 49 states and 75 transitions. [2020-10-14 07:23:29,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:23:29,191 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-14 07:23:29,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:29,193 INFO L225 Difference]: With dead ends: 49 [2020-10-14 07:23:29,194 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 07:23:29,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2020-10-14 07:23:29,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 07:23:29,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2020-10-14 07:23:29,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 07:23:29,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2020-10-14 07:23:29,205 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 42 [2020-10-14 07:23:29,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:29,205 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2020-10-14 07:23:29,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:23:29,206 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2020-10-14 07:23:29,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 07:23:29,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:29,207 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:29,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:23:29,208 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:29,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:29,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1051926487, now seen corresponding path program 3 times [2020-10-14 07:23:29,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:29,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301191046] [2020-10-14 07:23:29,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:29,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:29,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:29,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:29,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:31,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:31,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 07:23:31,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:23:31,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2274 [2020-10-14 07:23:31,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:31,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:31,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:23:31,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 07:23:31,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 07:23:31,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:31,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:31,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:31,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:31,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:23:31,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:31,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:23:31,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:31,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:31,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:31,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:31,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:31,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:31,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:23:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:31,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:31,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:31,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:32,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:32,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:23:32,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:23:32,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-10-14 07:23:32,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:32,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:32,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:23:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 07:23:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 07:23:32,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:32,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:32,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:32,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:32,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:23:32,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:32,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:23:32,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:32,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:23:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:23:32,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:32,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:32,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:32,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:32,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:32,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:32,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 07:23:32,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:32,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:23:32,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:32,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:23:32,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:32,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 07:23:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:32,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:32,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:23:32,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:32,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 07:23:32,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:32,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:23:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:23:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 07:23:32,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:32,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:32,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:32,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:32,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:32,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:32,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 07:23:32,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:32,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:32,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:23:32,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:32,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:23:32,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:23:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 07:23:32,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301191046] [2020-10-14 07:23:32,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:23:32,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:23:32,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490441872] [2020-10-14 07:23:32,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:23:32,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:32,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:23:32,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:23:32,735 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 10 states. [2020-10-14 07:23:33,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:33,031 INFO L93 Difference]: Finished difference Result 82 states and 155 transitions. [2020-10-14 07:23:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:23:33,032 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-14 07:23:33,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:33,035 INFO L225 Difference]: With dead ends: 82 [2020-10-14 07:23:33,035 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 07:23:33,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:23:33,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 07:23:33,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-14 07:23:33,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 07:23:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 96 transitions. [2020-10-14 07:23:33,065 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 96 transitions. Word has length 42 [2020-10-14 07:23:33,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:33,065 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 96 transitions. [2020-10-14 07:23:33,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:23:33,066 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 96 transitions. [2020-10-14 07:23:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 07:23:33,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:33,072 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:33,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 07:23:33,073 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:33,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:33,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1391486109, now seen corresponding path program 4 times [2020-10-14 07:23:33,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:33,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357075570] [2020-10-14 07:23:33,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:33,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:35,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:35,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 07:23:35,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:23:35,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2139 [2020-10-14 07:23:35,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:35,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:35,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:23:35,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 07:23:35,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:23:35,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:23:35,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:35,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:35,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:35,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:23:35,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:35,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:23:35,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:35,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:35,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:35,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:35,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:35,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:35,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:23:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:35,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:35,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:35,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:35,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 07:23:35,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:23:35,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-14 07:23:35,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:35,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:23:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 07:23:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:23:35,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:35,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:35,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:35,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:35,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 07:23:35,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:35,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 07:23:35,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:35,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:23:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 07:23:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:23:35,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:35,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:35,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:35,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:23:35,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:35,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 07:23:35,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:35,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:35,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:23:35,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:23:35,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 07:23:35,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:35,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:35,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:35,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:35,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:35,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:35,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:23:35,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:35,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:23:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:23:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:35,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:23:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:35,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:35,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:23:35,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:35,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:23:35,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:35,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:23:35,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:35,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:35,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:35,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:35,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:35,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:35,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:35,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:23:35,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:35,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:35,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:35,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:35,650 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-14 07:23:35,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357075570] [2020-10-14 07:23:35,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:23:35,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 07:23:35,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181911657] [2020-10-14 07:23:35,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:23:35,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:35,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:23:35,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:23:35,654 INFO L87 Difference]: Start difference. First operand 56 states and 96 transitions. Second operand 4 states. [2020-10-14 07:23:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:35,717 INFO L93 Difference]: Finished difference Result 100 states and 201 transitions. [2020-10-14 07:23:35,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:23:35,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-14 07:23:35,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:35,720 INFO L225 Difference]: With dead ends: 100 [2020-10-14 07:23:35,720 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 07:23:35,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 07:23:35,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 07:23:35,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-14 07:23:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 07:23:35,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 97 transitions. [2020-10-14 07:23:35,750 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 97 transitions. Word has length 49 [2020-10-14 07:23:35,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:35,750 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 97 transitions. [2020-10-14 07:23:35,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:23:35,750 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 97 transitions. [2020-10-14 07:23:35,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 07:23:35,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:35,754 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:35,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 07:23:35,754 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:35,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:35,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1732137516, now seen corresponding path program 5 times [2020-10-14 07:23:35,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:35,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628498324] [2020-10-14 07:23:35,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:35,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:35,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:36,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:36,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 07:23:36,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:23:36,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1217 [2020-10-14 07:23:36,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:36,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:23:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 07:23:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:23:36,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:37,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:37,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:37,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:37,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:23:37,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:37,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:23:37,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:37,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:37,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:23:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:37,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:37,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:38,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:38,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 07:23:38,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:23:38,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1579 [2020-10-14 07:23:38,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:38,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:23:38,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:38,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 07:23:38,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:38,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:38,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:38,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:38,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:23:38,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:38,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:23:38,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:38,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:38,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-10-14 07:23:38,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:38,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:38,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:38,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 07:23:38,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:38,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:23:38,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:38,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:38,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:38,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:38,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:38,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:38,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:38,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:23:38,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:38,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:23:38,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:38,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:38,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:38,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:38,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:38,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:38,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:38,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:38,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:38,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:38,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:23:38,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:38,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:38,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:38,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:38,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:38,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:38,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 07:23:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:38,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:38,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:38,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:38,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:23:38,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:38,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:38,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:38,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 07:23:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:38,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:38,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:38,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:23:38,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:38,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:23:38,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:38,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:23:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:38,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:23:38,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:38,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:38,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:38,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:38,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:38,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:38,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:23:38,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:38,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:23:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:23:38,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:38,795 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 07:23:38,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628498324] [2020-10-14 07:23:38,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:23:38,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:23:38,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008150588] [2020-10-14 07:23:38,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:23:38,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:38,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:23:38,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:23:38,798 INFO L87 Difference]: Start difference. First operand 57 states and 97 transitions. Second operand 9 states. [2020-10-14 07:23:38,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:38,952 INFO L93 Difference]: Finished difference Result 67 states and 116 transitions. [2020-10-14 07:23:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:23:38,953 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-14 07:23:38,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:38,955 INFO L225 Difference]: With dead ends: 67 [2020-10-14 07:23:38,955 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 07:23:38,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:23:38,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 07:23:38,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-14 07:23:38,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 07:23:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 111 transitions. [2020-10-14 07:23:38,968 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 111 transitions. Word has length 62 [2020-10-14 07:23:38,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:38,969 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 111 transitions. [2020-10-14 07:23:38,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:23:38,969 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 111 transitions. [2020-10-14 07:23:38,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 07:23:38,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:38,971 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:38,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 07:23:38,971 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:38,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:38,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1483482771, now seen corresponding path program 6 times [2020-10-14 07:23:38,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:38,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102131763] [2020-10-14 07:23:38,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:38,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:39,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:39,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:39,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:40,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:40,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:41,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:43,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:43,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 07:23:43,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:23:43,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 07:23:43,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:43,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:23:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 07:23:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 07:23:44,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:44,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:44,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:44,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:44,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:23:44,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:23:44,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:44,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:44,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:23:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:44,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:44,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:44,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:44,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:44,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:44,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:49,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:49,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 07:23:49,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:23:49,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:23:49,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:49,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:49,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:23:49,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 07:23:49,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 07:23:49,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:49,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:49,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:49,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:49,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:49,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:49,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:49,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:49,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:53,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:53,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 07:23:53,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:23:53,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4465 [2020-10-14 07:23:53,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:53,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:23:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 07:23:53,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:53,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:53,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:53,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:53,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:23:53,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:53,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 07:23:53,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:53,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:23:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 07:23:53,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:53,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:53,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:53,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:53,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 07:23:53,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:53,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:23:53,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:53,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:53,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:53,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:53,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:53,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:53,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:53,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:53,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:53,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:23:53,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:53,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:23:53,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:53,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:53,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:53,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:53,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:53,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:53,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:53,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:53,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:53,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:53,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:53,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:23:53,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:53,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:53,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 07:23:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:53,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:53,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:53,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:53,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:23:53,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:53,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:53,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 07:23:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:53,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:53,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:53,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:53,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:23:53,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:23:53,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:23:53,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:53,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:23:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:23:53,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:53,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:23:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:53,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:53,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:53,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:53,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:53,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:23:53,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:53,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:23:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:23:53,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:53,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 07:23:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:53,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:53,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:53,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:23:53,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:53,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:23:53,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:53,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:23:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:23:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:23:53,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 104 proven. 19 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 07:23:53,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102131763] [2020-10-14 07:23:53,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:23:53,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:23:53,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905810167] [2020-10-14 07:23:53,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:23:53,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:53,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:23:53,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:23:53,726 INFO L87 Difference]: Start difference. First operand 63 states and 111 transitions. Second operand 10 states. [2020-10-14 07:23:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:53,880 INFO L93 Difference]: Finished difference Result 100 states and 206 transitions. [2020-10-14 07:23:53,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:23:53,880 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-10-14 07:23:53,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:53,881 INFO L225 Difference]: With dead ends: 100 [2020-10-14 07:23:53,881 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 07:23:53,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:23:53,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 07:23:53,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 07:23:53,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 07:23:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 07:23:53,885 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2020-10-14 07:23:53,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:53,885 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 07:23:53,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:23:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 07:23:53,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 07:23:53,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 07:23:53,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 07:23:54,394 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 07:23:54,395 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 07:23:54,395 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 07:23:54,395 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 07:23:54,395 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 07:23:54,395 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 07:23:54,395 INFO L268 CegarLoopResult]: For program point ackermannEXIT(lines 15 23) no Hoare annotation was computed. [2020-10-14 07:23:54,395 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|) (or (< 0 ackermann_~m) (<= (+ ackermann_~m 1) 0))) [2020-10-14 07:23:54,396 INFO L271 CegarLoopResult]: At program point ackermannENTRY(lines 15 23) the Hoare annotation is: true [2020-10-14 07:23:54,396 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-10-14 07:23:54,397 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= |ackermann_#in~n| 0) (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|) (or (< 0 ackermann_~m) (<= (+ ackermann_~m 1) 0))) [2020-10-14 07:23:54,397 INFO L264 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (let ((.cse2 (= ackermann_~n |ackermann_#in~n|)) (.cse0 (<= 1 |ackermann_#in~m|)) (.cse1 (= ackermann_~m |ackermann_#in~m|))) (or (and (not (= ackermann_~m 1)) .cse0 .cse1 .cse2) (and (<= 2 |ackermann_#t~ret1|) .cse2 .cse0 .cse1))) [2020-10-14 07:23:54,397 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-10-14 07:23:54,398 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-14 07:23:54,398 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-10-14 07:23:54,398 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-10-14 07:23:54,398 INFO L268 CegarLoopResult]: For program point ackermannFINAL(lines 15 23) no Hoare annotation was computed. [2020-10-14 07:23:54,398 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2020-10-14 07:23:54,399 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 46) the Hoare annotation is: true [2020-10-14 07:23:54,399 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-10-14 07:23:54,399 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 46) no Hoare annotation was computed. [2020-10-14 07:23:54,399 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 46) no Hoare annotation was computed. [2020-10-14 07:23:54,399 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-10-14 07:23:54,399 INFO L268 CegarLoopResult]: For program point L41(lines 41 45) no Hoare annotation was computed. [2020-10-14 07:23:54,399 INFO L271 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: true [2020-10-14 07:23:54,399 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-10-14 07:23:54,400 INFO L268 CegarLoopResult]: For program point L34(lines 34 39) no Hoare annotation was computed. [2020-10-14 07:23:54,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 07:23:54 BoogieIcfgContainer [2020-10-14 07:23:54,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 07:23:54,414 INFO L168 Benchmark]: Toolchain (without parser) took 30504.76 ms. Allocated memory was 148.4 MB in the beginning and 420.0 MB in the end (delta: 271.6 MB). Free memory was 104.8 MB in the beginning and 107.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 269.0 MB. Max. memory is 7.1 GB. [2020-10-14 07:23:54,415 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 07:23:54,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.90 ms. Allocated memory is still 148.4 MB. Free memory was 104.4 MB in the beginning and 94.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-10-14 07:23:54,417 INFO L168 Benchmark]: Boogie Preprocessor took 165.55 ms. Allocated memory was 148.4 MB in the beginning and 208.1 MB in the end (delta: 59.8 MB). Free memory was 94.7 MB in the beginning and 186.3 MB in the end (delta: -91.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-14 07:23:54,422 INFO L168 Benchmark]: RCFGBuilder took 275.79 ms. Allocated memory is still 208.1 MB. Free memory was 186.3 MB in the beginning and 173.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-10-14 07:23:54,423 INFO L168 Benchmark]: TraceAbstraction took 29734.70 ms. Allocated memory was 208.1 MB in the beginning and 420.0 MB in the end (delta: 211.8 MB). Free memory was 173.3 MB in the beginning and 107.3 MB in the end (delta: 65.9 MB). Peak memory consumption was 277.7 MB. Max. memory is 7.1 GB. [2020-10-14 07:23:54,435 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.90 ms. Allocated memory is still 148.4 MB. Free memory was 104.4 MB in the beginning and 94.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 165.55 ms. Allocated memory was 148.4 MB in the beginning and 208.1 MB in the end (delta: 59.8 MB). Free memory was 94.7 MB in the beginning and 186.3 MB in the end (delta: -91.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 275.79 ms. Allocated memory is still 208.1 MB. Free memory was 186.3 MB in the beginning and 173.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29734.70 ms. Allocated memory was 208.1 MB in the beginning and 420.0 MB in the end (delta: 211.8 MB). Free memory was 173.3 MB in the beginning and 107.3 MB in the end (delta: 65.9 MB). Peak memory consumption was 277.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 29.1s, OverallIterations: 9, TraceHistogramMax: 10, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 200 SDtfs, 166 SDslu, 740 SDs, 0 SdLazy, 1043 SolverSat, 189 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 27 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 113 PreInvPairs, 136 NumberOfFragments, 69 HoareAnnotationTreeSize, 113 FomulaSimplifications, 2932 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 9 FomulaSimplificationsInter, 453 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 26.4s InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 361 ConstructedInterpolants, 0 QuantifiedInterpolants, 31953 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 474/548 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...