/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=BIGGEST --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/array-examples/standard_reverse_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:03:05,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:03:05,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:03:05,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:03:05,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:03:05,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:03:05,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:03:05,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:03:05,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:03:05,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:03:05,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:03:05,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:03:05,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:03:05,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:03:05,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:03:05,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:03:05,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:03:05,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:03:05,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:03:05,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:03:05,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:03:05,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:03:05,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:03:05,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:03:05,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:03:05,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:03:05,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:03:05,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:03:05,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:03:05,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:03:05,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:03:05,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:03:05,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:03:05,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:03:05,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:03:05,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:03:05,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:03:05,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:03:05,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:03:05,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:03:05,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:03:05,933 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 [2020-10-12 10:03:05,955 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:03:05,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:03:05,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:03:05,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:03:05,957 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:03:05,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:03:05,958 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:03:05,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:03:05,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:03:05,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:03:05,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:03:05,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:03:05,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:03:05,959 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:03:05,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:03:05,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:03:05,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:03:05,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:03:05,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:03:05,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:03:05,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:03:05,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:03:05,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:03:05,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:03:05,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:03:05,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:03:05,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:03:05,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:03:05,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:03:05,962 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:03:06,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:03:06,291 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:03:06,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:03:06,296 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:03:06,297 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:03:06,297 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_reverse_ground.i [2020-10-12 10:03:06,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff0a39958/5e3606977da946da9edfeec380beb268/FLAGd48560142 [2020-10-12 10:03:06,826 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:03:06,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_reverse_ground.i [2020-10-12 10:03:06,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff0a39958/5e3606977da946da9edfeec380beb268/FLAGd48560142 [2020-10-12 10:03:07,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff0a39958/5e3606977da946da9edfeec380beb268 [2020-10-12 10:03:07,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:03:07,236 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:03:07,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:03:07,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:03:07,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:03:07,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:03:07" (1/1) ... [2020-10-12 10:03:07,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad6a6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:07, skipping insertion in model container [2020-10-12 10:03:07,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:03:07" (1/1) ... [2020-10-12 10:03:07,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:03:07,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:03:07,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:03:07,500 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:03:07,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:03:07,545 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:03:07,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:07 WrapperNode [2020-10-12 10:03:07,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:03:07,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:03:07,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:03:07,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:03:07,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:07" (1/1) ... [2020-10-12 10:03:07,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:07" (1/1) ... [2020-10-12 10:03:07,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:07" (1/1) ... [2020-10-12 10:03:07,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:07" (1/1) ... [2020-10-12 10:03:07,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:07" (1/1) ... [2020-10-12 10:03:07,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:07" (1/1) ... [2020-10-12 10:03:07,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:07" (1/1) ... [2020-10-12 10:03:07,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:03:07,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:03:07,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:03:07,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:03:07,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:07" (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 [2020-10-12 10:03:07,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:03:07,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:03:07,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:03:07,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:03:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:03:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:03:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:03:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:03:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:03:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:03:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:03:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:03:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:03:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:03:07,970 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:03:07,970 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 10:03:07,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:03:07 BoogieIcfgContainer [2020-10-12 10:03:07,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:03:07,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:03:07,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:03:07,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:03:07,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:03:07" (1/3) ... [2020-10-12 10:03:07,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59710e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:03:07, skipping insertion in model container [2020-10-12 10:03:07,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:07" (2/3) ... [2020-10-12 10:03:07,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59710e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:03:07, skipping insertion in model container [2020-10-12 10:03:07,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:03:07" (3/3) ... [2020-10-12 10:03:07,984 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_reverse_ground.i [2020-10-12 10:03:08,007 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:03:08,026 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:03:08,044 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:03:08,075 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:03:08,075 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:03:08,075 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:03:08,076 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:03:08,076 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:03:08,076 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:03:08,076 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:03:08,076 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:03:08,097 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-12 10:03:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 10:03:08,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:08,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:08,107 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:08,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:08,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1778002988, now seen corresponding path program 1 times [2020-10-12 10:03:08,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:08,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590255049] [2020-10-12 10:03:08,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:08,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:08,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:08,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 10:03:08,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:03:08,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-12 10:03:08,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:08,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:08,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 10:03:08,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 10:03:08,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 10:03:08,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:08,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:08,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:08,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:08,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:08,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 10:03:08,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:08,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:03:08,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590255049] [2020-10-12 10:03:08,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:03:08,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:03:08,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948837339] [2020-10-12 10:03:08,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:03:08,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:08,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:03:08,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:03:08,674 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2020-10-12 10:03:08,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:08,812 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2020-10-12 10:03:08,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:03:08,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-12 10:03:08,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:08,824 INFO L225 Difference]: With dead ends: 50 [2020-10-12 10:03:08,824 INFO L226 Difference]: Without dead ends: 26 [2020-10-12 10:03:08,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:03:08,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-12 10:03:08,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-12 10:03:08,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-12 10:03:08,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-12 10:03:08,875 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 15 [2020-10-12 10:03:08,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:08,876 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-12 10:03:08,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:03:08,876 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-12 10:03:08,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 10:03:08,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:08,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:08,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:03:08,878 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:08,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:08,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1323409058, now seen corresponding path program 1 times [2020-10-12 10:03:08,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:08,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716817471] [2020-10-12 10:03:08,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:08,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:09,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:09,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 10:03:09,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:09,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-12 10:03:09,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:03:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 10:03:09,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 10:03:09,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:09,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:09,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:09,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:09,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:09,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:09,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:09,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:09,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:09,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:09,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:09,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 10:03:09,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716817471] [2020-10-12 10:03:09,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:03:09,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 10:03:09,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981490312] [2020-10-12 10:03:09,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:03:09,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:09,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:03:09,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:03:09,801 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 10 states. [2020-10-12 10:03:10,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:10,112 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-10-12 10:03:10,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 10:03:10,113 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-10-12 10:03:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:10,114 INFO L225 Difference]: With dead ends: 34 [2020-10-12 10:03:10,114 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 10:03:10,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:03:10,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 10:03:10,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-12 10:03:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-12 10:03:10,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-12 10:03:10,125 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 19 [2020-10-12 10:03:10,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:10,126 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-12 10:03:10,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:03:10,126 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-12 10:03:10,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 10:03:10,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:10,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:10,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:03:10,128 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:10,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:10,128 INFO L82 PathProgramCache]: Analyzing trace with hash -96694823, now seen corresponding path program 1 times [2020-10-12 10:03:10,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:10,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951004198] [2020-10-12 10:03:10,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:10,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:10,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:10,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:10,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 10:03:10,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:03:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 10:03:10,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:03:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:03:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 10:03:10,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:10,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:10,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:10,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:10,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:10,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:10,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:03:10,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:10,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:10,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 10:03:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:10,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:10,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:10,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:10,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:10,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:10,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:10,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:10,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:10,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:10,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 10:03:10,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951004198] [2020-10-12 10:03:10,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:10,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 10:03:10,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314993186] [2020-10-12 10:03:10,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:03:10,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:10,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:03:10,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:03:10,371 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 5 states. [2020-10-12 10:03:10,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:10,467 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-12 10:03:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:03:10,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-12 10:03:10,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:10,471 INFO L225 Difference]: With dead ends: 57 [2020-10-12 10:03:10,471 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 10:03:10,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:03:10,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 10:03:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-12 10:03:10,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-12 10:03:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-12 10:03:10,480 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 27 [2020-10-12 10:03:10,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:10,480 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-12 10:03:10,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:03:10,481 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-12 10:03:10,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 10:03:10,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:10,482 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:10,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:03:10,482 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:10,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:10,483 INFO L82 PathProgramCache]: Analyzing trace with hash 60600405, now seen corresponding path program 2 times [2020-10-12 10:03:10,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:10,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469160879] [2020-10-12 10:03:10,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:10,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:10,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:11,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:11,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 10:03:11,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:11,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-10-12 10:03:11,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 10:03:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 10:03:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:03:11,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:11,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:11,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:11,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:11,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:11,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:03:11,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:11,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:11,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:11,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:11,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:11,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 10:03:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:11,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:11,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:11,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:11,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:11,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:03:11,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:11,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:11,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:11,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 10:03:11,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469160879] [2020-10-12 10:03:11,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:11,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 10:03:11,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691785564] [2020-10-12 10:03:11,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 10:03:11,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:11,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 10:03:11,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:03:11,631 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 13 states. [2020-10-12 10:03:12,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:12,368 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-10-12 10:03:12,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 10:03:12,369 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-10-12 10:03:12,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:12,370 INFO L225 Difference]: With dead ends: 46 [2020-10-12 10:03:12,370 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 10:03:12,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:03:12,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 10:03:12,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-12 10:03:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-12 10:03:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-10-12 10:03:12,380 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 31 [2020-10-12 10:03:12,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:12,381 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-10-12 10:03:12,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 10:03:12,381 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-10-12 10:03:12,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 10:03:12,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:12,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:12,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:03:12,383 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:12,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:12,383 INFO L82 PathProgramCache]: Analyzing trace with hash -80724852, now seen corresponding path program 3 times [2020-10-12 10:03:12,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:12,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211019120] [2020-10-12 10:03:12,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:12,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:12,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:12,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 10:03:12,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:03:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-12 10:03:12,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:03:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 10:03:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:12,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:12,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:12,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:12,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:12,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:12,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:12,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:12,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:12,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 10:03:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:12,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:12,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:12,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:12,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:12,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:12,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:12,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:12,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:12,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 10:03:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:12,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:12,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:12,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:12,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:12,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:12,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:12,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:12,836 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 10:03:12,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211019120] [2020-10-12 10:03:12,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:12,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 10:03:12,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27101942] [2020-10-12 10:03:12,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:03:12,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:12,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:03:12,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:03:12,839 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 6 states. [2020-10-12 10:03:12,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:12,918 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2020-10-12 10:03:12,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 10:03:12,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-12 10:03:12,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:12,920 INFO L225 Difference]: With dead ends: 79 [2020-10-12 10:03:12,920 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 10:03:12,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:03:12,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 10:03:12,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-12 10:03:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 10:03:12,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-10-12 10:03:12,930 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 39 [2020-10-12 10:03:12,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:12,930 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-10-12 10:03:12,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:03:12,930 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-10-12 10:03:12,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 10:03:12,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:12,932 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:12,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:03:12,932 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:12,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:12,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1049720072, now seen corresponding path program 4 times [2020-10-12 10:03:12,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:12,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740916941] [2020-10-12 10:03:12,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:12,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:12,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:13,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:14,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:14,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 10:03:14,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:14,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1719 [2020-10-12 10:03:14,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:14,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 10:03:14,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 10:03:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 10:03:14,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:15,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:15,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:15,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:15,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:15,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:15,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:03:15,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:15,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:15,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:15,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:15,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 10:03:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:15,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:15,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:15,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:15,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:03:15,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:15,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:15,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:15,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:15,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:15,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 10:03:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:15,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:15,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:15,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:15,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:03:15,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:15,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:15,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:15,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 10:03:15,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740916941] [2020-10-12 10:03:15,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:15,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:03:15,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065810911] [2020-10-12 10:03:15,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:03:15,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:15,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:03:15,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:03:15,479 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 16 states. [2020-10-12 10:03:16,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:16,631 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-10-12 10:03:16,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 10:03:16,632 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2020-10-12 10:03:16,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:16,633 INFO L225 Difference]: With dead ends: 58 [2020-10-12 10:03:16,633 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 10:03:16,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2020-10-12 10:03:16,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 10:03:16,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-12 10:03:16,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-12 10:03:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-10-12 10:03:16,644 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 43 [2020-10-12 10:03:16,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:16,644 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-10-12 10:03:16,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:03:16,645 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-10-12 10:03:16,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 10:03:16,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:16,646 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:16,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 10:03:16,647 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:16,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:16,647 INFO L82 PathProgramCache]: Analyzing trace with hash 318414399, now seen corresponding path program 5 times [2020-10-12 10:03:16,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:16,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737519670] [2020-10-12 10:03:16,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:16,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:16,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:17,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:17,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 10:03:17,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:03:17,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-12 10:03:17,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:03:17,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 10:03:17,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 10:03:17,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:17,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:17,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:17,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:17,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:17,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:17,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:17,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:17,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:17,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 10:03:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:17,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:17,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:17,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:17,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:17,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:17,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:17,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:17,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:17,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 10:03:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:17,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:17,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:17,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:17,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:17,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:17,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:17,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:17,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:17,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:17,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:03:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:17,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:17,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:17,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:17,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:17,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:17,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:17,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:17,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 10:03:17,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737519670] [2020-10-12 10:03:17,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:17,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 10:03:17,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682475578] [2020-10-12 10:03:17,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:03:17,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:17,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:03:17,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:03:17,302 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 7 states. [2020-10-12 10:03:17,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:17,400 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-10-12 10:03:17,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 10:03:17,401 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-12 10:03:17,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:17,402 INFO L225 Difference]: With dead ends: 101 [2020-10-12 10:03:17,402 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 10:03:17,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:03:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 10:03:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-12 10:03:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 10:03:17,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-10-12 10:03:17,412 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 51 [2020-10-12 10:03:17,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:17,413 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-10-12 10:03:17,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:03:17,413 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-10-12 10:03:17,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 10:03:17,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:17,414 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:17,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 10:03:17,415 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:17,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:17,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1711280965, now seen corresponding path program 6 times [2020-10-12 10:03:17,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:17,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166016647] [2020-10-12 10:03:17,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:17,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:17,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:18,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:19,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:19,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 10:03:19,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:19,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2347 [2020-10-12 10:03:19,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 10:03:19,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 10:03:19,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 10:03:19,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:20,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:20,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:20,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:20,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:20,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:20,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:03:20,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:20,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:20,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:20,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 10:03:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:20,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:20,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:20,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:20,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:20,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:03:20,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:20,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:20,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:20,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:20,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:20,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:03:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:20,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:20,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:20,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:20,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:20,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:03:20,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:20,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:20,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:20,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:20,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:20,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:03:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:20,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:20,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:20,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:20,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:20,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:03:20,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:20,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:20,695 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 10:03:20,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166016647] [2020-10-12 10:03:20,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:20,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 10:03:20,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397212670] [2020-10-12 10:03:20,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 10:03:20,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:20,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 10:03:20,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:03:20,699 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 19 states. [2020-10-12 10:03:22,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:22,708 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-10-12 10:03:22,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 10:03:22,710 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-10-12 10:03:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:22,712 INFO L225 Difference]: With dead ends: 70 [2020-10-12 10:03:22,712 INFO L226 Difference]: Without dead ends: 68 [2020-10-12 10:03:22,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=213, Invalid=1047, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 10:03:22,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-12 10:03:22,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-12 10:03:22,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-12 10:03:22,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2020-10-12 10:03:22,731 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 55 [2020-10-12 10:03:22,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:22,732 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2020-10-12 10:03:22,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 10:03:22,732 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2020-10-12 10:03:22,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 10:03:22,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:22,734 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:22,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 10:03:22,734 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:22,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:22,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1680100622, now seen corresponding path program 7 times [2020-10-12 10:03:22,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:22,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665947712] [2020-10-12 10:03:22,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:22,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:23,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:23,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 10:03:23,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:03:23,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-10-12 10:03:23,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:03:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:03:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 10:03:23,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:23,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:23,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:23,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:23,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:23,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:23,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:23,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:23,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:23,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:23,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 10:03:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:23,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:23,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:23,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:23,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:23,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:23,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:23,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:23,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:03:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:23,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:23,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:23,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:23,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:23,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:23,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:23,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:03:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:23,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:23,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:23,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:23,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:23,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:23,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:23,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:23,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:03:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:23,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:23,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:23,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:23,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:23,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:23,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-12 10:03:23,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665947712] [2020-10-12 10:03:23,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:23,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 10:03:23,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661645595] [2020-10-12 10:03:23,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 10:03:23,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:23,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 10:03:23,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:03:23,849 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 8 states. [2020-10-12 10:03:23,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:23,955 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2020-10-12 10:03:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 10:03:23,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-10-12 10:03:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:23,956 INFO L225 Difference]: With dead ends: 123 [2020-10-12 10:03:23,957 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 10:03:23,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:03:23,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 10:03:23,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-12 10:03:23,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-12 10:03:23,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2020-10-12 10:03:23,975 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 63 [2020-10-12 10:03:23,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:23,977 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2020-10-12 10:03:23,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 10:03:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-10-12 10:03:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 10:03:23,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:23,982 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:23,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 10:03:23,984 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:23,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:23,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1789400942, now seen corresponding path program 8 times [2020-10-12 10:03:23,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:23,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130575268] [2020-10-12 10:03:23,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:24,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:24,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:26,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:26,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 10:03:26,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:26,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2869 [2020-10-12 10:03:26,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:26,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:03:26,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 10:03:26,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 10:03:26,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:28,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:28,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:28,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:28,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:28,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:28,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:28,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:28,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:28,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 10:03:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:28,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:28,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:28,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:28,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:28,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:28,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:28,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:28,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:28,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:03:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:28,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:28,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:28,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:28,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:28,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:28,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:28,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:28,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:03:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:28,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:28,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:28,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:28,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:28,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:03:28,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:28,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:03:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:28,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:28,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:28,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:28,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:28,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:03:28,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:28,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:28,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:28,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:28,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 13 proven. 52 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-12 10:03:28,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130575268] [2020-10-12 10:03:28,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:28,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 10:03:28,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922449030] [2020-10-12 10:03:28,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 10:03:28,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:28,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 10:03:28,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:03:28,161 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 22 states. [2020-10-12 10:03:29,097 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-10-12 10:03:29,539 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-12 10:03:29,875 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-12 10:03:30,296 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-12 10:03:30,875 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-12 10:03:31,161 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-12 10:03:31,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:31,633 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-10-12 10:03:31,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 10:03:31,635 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 67 [2020-10-12 10:03:31,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:31,636 INFO L225 Difference]: With dead ends: 82 [2020-10-12 10:03:31,636 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 10:03:31,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=290, Invalid=1432, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 10:03:31,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 10:03:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-12 10:03:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-12 10:03:31,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-10-12 10:03:31,649 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 67 [2020-10-12 10:03:31,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:31,650 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-10-12 10:03:31,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 10:03:31,650 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-10-12 10:03:31,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-12 10:03:31,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:31,651 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:31,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 10:03:31,652 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:31,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:31,653 INFO L82 PathProgramCache]: Analyzing trace with hash 714308261, now seen corresponding path program 9 times [2020-10-12 10:03:31,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:31,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20076729] [2020-10-12 10:03:31,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:31,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:33,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:33,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 10:03:33,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:03:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1375 [2020-10-12 10:03:33,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:33,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:03:33,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 10:03:33,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 10:03:33,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:33,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:33,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:33,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:33,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:33,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:33,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:33,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:33,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:33,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:33,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:33,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:33,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 10:03:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:33,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:33,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:33,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:33,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:33,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:33,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:33,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:33,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:33,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:03:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:33,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:33,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:33,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:33,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:33,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:33,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:33,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:33,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:33,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:33,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:33,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:03:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:33,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:33,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:33,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:33,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:33,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:33,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:03:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:33,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:33,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:33,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:33,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:33,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:33,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:33,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:33,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:03:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:33,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:33,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:33,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:33,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:33,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-12 10:03:33,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20076729] [2020-10-12 10:03:33,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:33,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:03:33,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605300479] [2020-10-12 10:03:33,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:03:33,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:33,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:03:33,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:03:33,130 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 9 states. [2020-10-12 10:03:33,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:33,245 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2020-10-12 10:03:33,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 10:03:33,246 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-10-12 10:03:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:33,247 INFO L225 Difference]: With dead ends: 145 [2020-10-12 10:03:33,247 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 10:03:33,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:03:33,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 10:03:33,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-12 10:03:33,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-12 10:03:33,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2020-10-12 10:03:33,259 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 75 [2020-10-12 10:03:33,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:33,259 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2020-10-12 10:03:33,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:03:33,260 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2020-10-12 10:03:33,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 10:03:33,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:33,261 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:33,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 10:03:33,261 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:33,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:33,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1077283551, now seen corresponding path program 10 times [2020-10-12 10:03:33,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:33,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887856866] [2020-10-12 10:03:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:33,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:34,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:37,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:37,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 10:03:37,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:37,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3776 [2020-10-12 10:03:37,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 10:03:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 10:03:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 10:03:37,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:38,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:38,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:38,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:38,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:38,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:38,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:38,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:38,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:38,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:38,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:38,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:38,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:03:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:38,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:38,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:38,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:38,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:38,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:38,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:38,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:38,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:38,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:38,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:38,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:03:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:38,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:38,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:38,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:38,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:38,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:38,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:38,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:38,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:03:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:38,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:38,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:38,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:38,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:38,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:38,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:38,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 10:03:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:38,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:38,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:38,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:38,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:38,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:38,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:38,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:38,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 10:03:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:38,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:38,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:38,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:38,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:38,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:38,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:38,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:38,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 16 proven. 80 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-12 10:03:38,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887856866] [2020-10-12 10:03:38,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:38,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 10:03:38,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525268125] [2020-10-12 10:03:38,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 10:03:38,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:38,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 10:03:38,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2020-10-12 10:03:38,392 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 25 states. [2020-10-12 10:03:40,533 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-12 10:03:41,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:41,454 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2020-10-12 10:03:41,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 10:03:41,454 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 79 [2020-10-12 10:03:41,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:41,456 INFO L225 Difference]: With dead ends: 94 [2020-10-12 10:03:41,456 INFO L226 Difference]: Without dead ends: 92 [2020-10-12 10:03:41,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=380, Invalid=1876, Unknown=0, NotChecked=0, Total=2256 [2020-10-12 10:03:41,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-12 10:03:41,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-12 10:03:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-12 10:03:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-10-12 10:03:41,468 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 79 [2020-10-12 10:03:41,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:41,469 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-10-12 10:03:41,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 10:03:41,469 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-10-12 10:03:41,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 10:03:41,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:41,470 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:41,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 10:03:41,470 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:41,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:41,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1906182824, now seen corresponding path program 11 times [2020-10-12 10:03:41,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:41,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547439894] [2020-10-12 10:03:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:41,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:41,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:43,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:43,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 10:03:43,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:03:43,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1668 [2020-10-12 10:03:43,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:03:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 10:03:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:03:43,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:43,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:43,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:43,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:43,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:43,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:43,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:43,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:43,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:43,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:03:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:43,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:43,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:43,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:43,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:43,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:43,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:43,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:03:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:43,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:43,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:43,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:43,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:43,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:43,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:43,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:43,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:43,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:43,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:03:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:43,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:43,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:43,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:43,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:43,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:43,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:43,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:43,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 10:03:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:43,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:43,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:43,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:43,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:43,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:43,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:43,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:43,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:43,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:43,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 10:03:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:43,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:43,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:43,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:43,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:43,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:43,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:43,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:03:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:43,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:43,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:43,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:43,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:43,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:43,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:43,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:43,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:43,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-12 10:03:43,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547439894] [2020-10-12 10:03:43,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:43,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:03:43,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344968901] [2020-10-12 10:03:43,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:03:43,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:43,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:03:43,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:03:43,265 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 10 states. [2020-10-12 10:03:43,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:43,373 INFO L93 Difference]: Finished difference Result 167 states and 172 transitions. [2020-10-12 10:03:43,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:03:43,373 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-10-12 10:03:43,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:43,375 INFO L225 Difference]: With dead ends: 167 [2020-10-12 10:03:43,375 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 10:03:43,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:03:43,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 10:03:43,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-12 10:03:43,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-12 10:03:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2020-10-12 10:03:43,395 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 87 [2020-10-12 10:03:43,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:43,396 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2020-10-12 10:03:43,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:03:43,396 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2020-10-12 10:03:43,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 10:03:43,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:43,397 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:43,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 10:03:43,401 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:43,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:43,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1663403476, now seen corresponding path program 12 times [2020-10-12 10:03:43,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:43,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313190687] [2020-10-12 10:03:43,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:43,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:43,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:44,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:47,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:47,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 10:03:47,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:47,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3818 [2020-10-12 10:03:47,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 10:03:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 10:03:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 10:03:47,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:48,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:48,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:48,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:48,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:48,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:48,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:48,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:48,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:48,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:48,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:03:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:48,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:48,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:48,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:48,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:48,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:48,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:48,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:48,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:48,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:03:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:48,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:48,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:48,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:48,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:48,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:48,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:48,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:48,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:03:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:48,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:48,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:48,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:48,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:48,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:48,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:48,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:03:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:48,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:48,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:48,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:48,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:48,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:48,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:48,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:48,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 10:03:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:48,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:48,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:48,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:48,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:48,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:48,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:48,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:48,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:48,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:48,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:48,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:03:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:48,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:48,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:48,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:48,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:48,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:48,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:48,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 19 proven. 114 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-12 10:03:48,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313190687] [2020-10-12 10:03:48,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:48,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 10:03:48,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810678014] [2020-10-12 10:03:48,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 10:03:48,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:48,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 10:03:48,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=697, Unknown=0, NotChecked=0, Total=756 [2020-10-12 10:03:48,840 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand 28 states. [2020-10-12 10:03:50,363 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-12 10:03:50,689 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-12 10:03:50,990 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-12 10:03:51,242 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-12 10:03:51,474 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-12 10:03:51,706 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-12 10:03:51,954 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-12 10:03:52,119 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-12 10:03:52,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:52,375 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2020-10-12 10:03:52,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 10:03:52,376 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 91 [2020-10-12 10:03:52,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:52,378 INFO L225 Difference]: With dead ends: 106 [2020-10-12 10:03:52,378 INFO L226 Difference]: Without dead ends: 104 [2020-10-12 10:03:52,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=483, Invalid=2379, Unknown=0, NotChecked=0, Total=2862 [2020-10-12 10:03:52,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-12 10:03:52,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-10-12 10:03:52,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-12 10:03:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2020-10-12 10:03:52,392 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 91 [2020-10-12 10:03:52,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:52,392 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2020-10-12 10:03:52,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 10:03:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2020-10-12 10:03:52,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 10:03:52,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:52,393 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:52,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 10:03:52,394 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:52,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:52,394 INFO L82 PathProgramCache]: Analyzing trace with hash -788061429, now seen corresponding path program 13 times [2020-10-12 10:03:52,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:52,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945849022] [2020-10-12 10:03:52,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:52,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:52,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:54,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 10:03:54,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:03:54,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1995 [2020-10-12 10:03:54,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:54,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:03:54,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 10:03:54,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 10:03:54,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:54,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:54,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:54,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:54,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:54,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:54,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:54,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:54,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:54,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:54,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:54,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:03:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:54,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:54,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:54,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:54,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:54,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:54,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:54,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:03:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:54,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:54,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:54,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:54,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:54,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:54,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:54,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:03:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:54,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:54,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:54,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:54,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:54,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:54,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:54,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:54,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:54,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:54,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:03:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:54,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:54,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:54,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:54,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:54,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:54,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:54,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:54,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:54,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:54,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 10:03:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:54,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:54,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:54,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:54,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:54,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:54,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:54,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:54,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:54,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:54,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:03:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:54,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:54,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:54,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:54,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:54,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:54,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:03:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:54,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:54,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:54,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:54,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:54,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:54,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 14 proven. 49 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-12 10:03:54,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945849022] [2020-10-12 10:03:54,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:54,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 10:03:54,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796084566] [2020-10-12 10:03:54,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 10:03:54,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:54,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 10:03:54,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:03:54,563 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand 11 states. [2020-10-12 10:03:54,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:54,757 INFO L93 Difference]: Finished difference Result 189 states and 194 transitions. [2020-10-12 10:03:54,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 10:03:54,758 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 99 [2020-10-12 10:03:54,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:54,759 INFO L225 Difference]: With dead ends: 189 [2020-10-12 10:03:54,759 INFO L226 Difference]: Without dead ends: 108 [2020-10-12 10:03:54,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:03:54,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-12 10:03:54,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-12 10:03:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-12 10:03:54,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2020-10-12 10:03:54,777 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 99 [2020-10-12 10:03:54,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:54,778 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2020-10-12 10:03:54,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 10:03:54,778 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2020-10-12 10:03:54,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 10:03:54,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:54,779 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:54,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 10:03:54,779 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:54,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:54,780 INFO L82 PathProgramCache]: Analyzing trace with hash -654653049, now seen corresponding path program 14 times [2020-10-12 10:03:54,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:54,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069370946] [2020-10-12 10:03:54,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:54,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:56,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:59,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:59,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 10:03:59,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:59,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 10:03:59,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 10:03:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-12 10:03:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 10:03:59,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:01,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:01,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:01,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:01,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:01,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:01,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:01,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:01,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:04:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:01,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:01,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:01,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:01,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:01,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:01,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:01,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:01,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:04:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:01,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:01,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:01,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:01,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:01,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:01,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:01,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:01,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 10:04:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:01,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:01,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:01,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:01,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:01,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:01,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:01,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:01,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 10:04:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:01,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:01,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:01,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:01,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:01,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:01,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:01,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:04:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:01,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:01,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:01,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:01,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:01,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:01,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:01,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:01,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:04:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:01,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:01,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:01,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:01,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:01,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:01,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:01,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:01,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:01,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:01,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:01,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:04:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:01,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:01,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:01,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:01,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:01,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:01,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:01,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:01,662 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 22 proven. 154 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-12 10:04:01,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069370946] [2020-10-12 10:04:01,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:01,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 10:04:01,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890560136] [2020-10-12 10:04:01,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 10:04:01,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:01,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 10:04:01,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=864, Unknown=0, NotChecked=0, Total=930 [2020-10-12 10:04:01,665 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand 31 states. [2020-10-12 10:04:03,719 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-12 10:04:04,229 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-12 10:04:04,639 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-12 10:04:05,033 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-12 10:04:05,504 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-12 10:04:05,889 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-12 10:04:06,255 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-10-12 10:04:06,655 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-12 10:04:06,908 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-12 10:04:07,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:07,323 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2020-10-12 10:04:07,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 10:04:07,324 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 103 [2020-10-12 10:04:07,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:07,326 INFO L225 Difference]: With dead ends: 118 [2020-10-12 10:04:07,326 INFO L226 Difference]: Without dead ends: 116 [2020-10-12 10:04:07,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=594, Invalid=2828, Unknown=0, NotChecked=0, Total=3422 [2020-10-12 10:04:07,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-12 10:04:07,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-12 10:04:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-12 10:04:07,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2020-10-12 10:04:07,341 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 103 [2020-10-12 10:04:07,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:07,342 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2020-10-12 10:04:07,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 10:04:07,342 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2020-10-12 10:04:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 10:04:07,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:07,343 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:07,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 10:04:07,344 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:07,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:07,344 INFO L82 PathProgramCache]: Analyzing trace with hash 918750142, now seen corresponding path program 15 times [2020-10-12 10:04:07,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:07,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653095262] [2020-10-12 10:04:07,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:07,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:07,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:09,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:09,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 10:04:09,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:04:09,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2585 [2020-10-12 10:04:09,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:09,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:04:09,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 10:04:09,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:10,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:10,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:10,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:10,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:10,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:10,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:10,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:10,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:10,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:10,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:10,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:04:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:10,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:10,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:10,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:10,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:10,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:10,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:10,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:04:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:10,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:10,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:10,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:10,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:10,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:10,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:10,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 10:04:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:10,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:10,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:10,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:10,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:10,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 10:04:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:10,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:10,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:10,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:10,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:10,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:10,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:10,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:10,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:10,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:10,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:04:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:10,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:10,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:10,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:10,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:10,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:10,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:10,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:04:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:10,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:10,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:10,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:10,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:10,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:10,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:10,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:10,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:04:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:10,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:10,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:10,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:10,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:10,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:10,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:10,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:04:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:10,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:10,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:10,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:10,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:10,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:10,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:10,075 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 16 proven. 64 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2020-10-12 10:04:10,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653095262] [2020-10-12 10:04:10,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:10,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 10:04:10,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278075122] [2020-10-12 10:04:10,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 10:04:10,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:10,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 10:04:10,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:04:10,077 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand 12 states. [2020-10-12 10:04:10,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:10,256 INFO L93 Difference]: Finished difference Result 211 states and 216 transitions. [2020-10-12 10:04:10,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:04:10,257 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-10-12 10:04:10,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:10,259 INFO L225 Difference]: With dead ends: 211 [2020-10-12 10:04:10,259 INFO L226 Difference]: Without dead ends: 120 [2020-10-12 10:04:10,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:04:10,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-12 10:04:10,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-12 10:04:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-12 10:04:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2020-10-12 10:04:10,275 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 111 [2020-10-12 10:04:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:10,275 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2020-10-12 10:04:10,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 10:04:10,275 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2020-10-12 10:04:10,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 10:04:10,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:10,277 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:10,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 10:04:10,277 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:10,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:10,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1611251770, now seen corresponding path program 16 times [2020-10-12 10:04:10,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:10,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748030650] [2020-10-12 10:04:10,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:10,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:12,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:15,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:15,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 10:04:15,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:15,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 10:04:15,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:15,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 10:04:15,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 10:04:15,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 10:04:15,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:04:15,938 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 27 [2020-10-12 10:04:16,257 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 21 [2020-10-12 10:04:16,451 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 35 [2020-10-12 10:04:16,767 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 35 [2020-10-12 10:04:16,947 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 21 [2020-10-12 10:04:17,142 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 35 [2020-10-12 10:04:17,335 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 21 [2020-10-12 10:04:17,591 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 28 [2020-10-12 10:04:17,811 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 21 [2020-10-12 10:04:18,209 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 21 [2020-10-12 10:04:20,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:20,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:20,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:20,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:20,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:20,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:20,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:20,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:20,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:20,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:20,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:04:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:20,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:20,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:20,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:20,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:20,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:20,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:20,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:20,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:04:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:20,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:20,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:20,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:20,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:20,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:20,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:20,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:20,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:04:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:20,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:20,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:20,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:20,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:20,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:20,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:20,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:20,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:20,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:20,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:20,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 10:04:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:20,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:20,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:20,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:20,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:20,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:20,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:20,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:20,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:20,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:20,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:20,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:04:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:20,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:20,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:20,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:20,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:20,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:20,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:20,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:20,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:04:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:20,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:20,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:20,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:20,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:20,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:20,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:20,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:20,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 10:04:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:20,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:20,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:20,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:20,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:20,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:20,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:20,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:20,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 10:04:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:20,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:20,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:20,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:20,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:20,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 25 proven. 200 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-12 10:04:20,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748030650] [2020-10-12 10:04:20,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:20,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 10:04:20,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10906819] [2020-10-12 10:04:20,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 10:04:20,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:20,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 10:04:20,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1049, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 10:04:20,140 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand 34 states. [2020-10-12 10:04:22,727 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2020-10-12 10:04:23,379 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-10-12 10:04:23,856 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-12 10:04:24,636 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-12 10:04:25,475 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-12 10:04:26,235 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-12 10:04:27,123 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-10-12 10:04:27,917 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-10-12 10:04:28,773 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-10-12 10:04:29,639 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-12 10:04:30,517 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-12 10:04:31,045 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-12 10:04:31,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:31,830 INFO L93 Difference]: Finished difference Result 130 states and 132 transitions. [2020-10-12 10:04:31,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 10:04:31,831 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 115 [2020-10-12 10:04:31,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:31,833 INFO L225 Difference]: With dead ends: 130 [2020-10-12 10:04:31,834 INFO L226 Difference]: Without dead ends: 128 [2020-10-12 10:04:31,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=728, Invalid=3562, Unknown=0, NotChecked=0, Total=4290 [2020-10-12 10:04:31,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-12 10:04:31,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2020-10-12 10:04:31,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-12 10:04:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2020-10-12 10:04:31,850 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 115 [2020-10-12 10:04:31,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:31,851 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2020-10-12 10:04:31,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 10:04:31,851 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2020-10-12 10:04:31,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 10:04:31,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:31,852 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:31,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 10:04:31,853 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:31,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:31,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1045796721, now seen corresponding path program 17 times [2020-10-12 10:04:31,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:31,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633566524] [2020-10-12 10:04:31,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:31,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:31,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:35,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:35,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 10:04:35,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:04:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3532 [2020-10-12 10:04:35,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 10:04:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 10:04:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:04:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:35,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:35,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:35,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:35,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:35,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:35,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:35,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:35,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:35,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:35,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:35,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:35,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:04:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:35,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:35,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:35,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:35,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:35,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:35,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:35,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:35,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:04:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:35,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:35,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:35,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:35,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:35,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:35,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:35,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:35,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:35,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:35,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:35,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:04:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:35,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:35,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:35,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:35,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:35,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:35,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:35,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:35,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:35,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 10:04:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:35,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:35,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:35,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:35,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:35,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:35,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:35,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:35,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:04:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:35,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:35,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:35,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:35,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:35,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:35,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:35,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:35,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:35,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:35,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:35,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:04:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:35,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:35,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:35,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:35,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:35,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:35,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:35,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:35,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:35,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:35,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 10:04:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:35,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:35,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:35,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:35,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:35,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:35,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:35,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:35,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:35,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:35,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:35,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 10:04:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:35,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:35,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:35,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:35,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:35,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:35,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:35,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:35,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 10:04:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:35,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:35,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:35,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:35,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:35,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:35,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:35,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 18 proven. 81 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2020-10-12 10:04:35,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633566524] [2020-10-12 10:04:35,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:35,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 10:04:35,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499787570] [2020-10-12 10:04:35,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 10:04:35,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:35,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 10:04:35,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:04:35,565 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand 13 states. [2020-10-12 10:04:35,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:35,801 INFO L93 Difference]: Finished difference Result 233 states and 238 transitions. [2020-10-12 10:04:35,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 10:04:35,802 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 123 [2020-10-12 10:04:35,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:35,803 INFO L225 Difference]: With dead ends: 233 [2020-10-12 10:04:35,803 INFO L226 Difference]: Without dead ends: 132 [2020-10-12 10:04:35,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:04:35,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-12 10:04:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-10-12 10:04:35,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-12 10:04:35,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2020-10-12 10:04:35,822 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 123 [2020-10-12 10:04:35,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:35,822 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2020-10-12 10:04:35,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 10:04:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2020-10-12 10:04:35,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 10:04:35,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:35,823 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:35,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 10:04:35,824 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:35,824 INFO L82 PathProgramCache]: Analyzing trace with hash -242062867, now seen corresponding path program 18 times [2020-10-12 10:04:35,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:35,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370481704] [2020-10-12 10:04:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:35,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:35,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:38,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:40,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:40,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 10:04:40,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:40,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 10:04:40,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:40,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 10:04:40,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 10:04:40,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 10:04:40,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:42,139 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 18 [2020-10-12 10:04:42,572 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 32 [2020-10-12 10:04:42,799 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 20 [2020-10-12 10:04:43,158 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 26 [2020-10-12 10:04:43,605 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 34 [2020-10-12 10:04:43,916 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 21 [2020-10-12 10:04:44,314 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 35 [2020-10-12 10:04:44,715 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 21 [2020-10-12 10:04:45,251 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 28 [2020-10-12 10:04:45,685 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 21 [2020-10-12 10:04:46,293 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 28 [2020-10-12 10:04:46,717 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 21 [2020-10-12 10:04:47,241 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 26 [2020-10-12 10:04:48,015 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 28 [2020-10-12 10:04:48,548 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 21 [2020-10-12 10:04:48,948 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 28 [2020-10-12 10:04:49,232 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 20 [2020-10-12 10:04:49,824 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 21 [2020-10-12 10:04:50,101 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 21 [2020-10-12 10:04:50,344 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 22 [2020-10-12 10:04:50,696 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 22 [2020-10-12 10:04:50,988 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 22 [2020-10-12 10:04:51,341 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 22 [2020-10-12 10:04:51,661 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 22 [2020-10-12 10:04:51,959 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 22 [2020-10-12 10:04:52,269 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 22 [2020-10-12 10:04:52,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:52,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:52,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:52,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:52,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:52,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:52,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:52,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:52,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:52,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:52,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:52,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:04:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:52,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:52,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:52,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:52,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:52,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:04:52,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:52,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:52,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 10:04:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:52,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:52,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:52,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:52,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:52,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:52,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:52,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:52,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:52,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:52,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:52,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 10:04:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:52,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:52,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:52,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:52,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:52,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:52,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:52,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:52,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:52,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:52,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:52,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:04:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:52,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:52,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:52,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:52,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:52,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:52,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:52,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:52,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:04:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:52,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:52,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:52,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:52,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:52,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:52,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:52,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:52,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:52,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:52,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:52,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:04:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:52,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:52,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:52,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:52,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:52,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:52,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:52,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:52,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:04:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:52,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:52,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:52,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:52,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:52,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:52,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:52,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:52,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 10:04:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:52,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:52,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:52,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:52,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:52,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:04:52,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:52,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:52,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:52,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:52,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:52,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 10:04:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:52,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:52,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:52,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:52,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:52,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:52,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:52,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:52,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:52,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:52,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:52,918 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 28 proven. 252 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2020-10-12 10:04:52,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370481704] [2020-10-12 10:04:52,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:52,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-12 10:04:52,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138715938] [2020-10-12 10:04:52,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-12 10:04:52,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:52,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-12 10:04:52,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1116, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 10:04:52,921 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 35 states. [2020-10-12 10:04:56,930 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 104 [2020-10-12 10:04:57,408 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-12 10:04:58,003 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2020-10-12 10:04:58,827 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2020-10-12 10:05:00,043 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-10-12 10:05:01,365 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-12 10:05:02,929 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-12 10:05:04,301 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-12 10:05:05,548 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-12 10:05:06,755 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-12 10:05:08,097 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-12 10:05:09,427 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-12 10:05:10,913 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2020-10-12 10:05:12,001 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-10-12 10:05:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:05:13,040 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2020-10-12 10:05:13,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 10:05:13,044 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 127 [2020-10-12 10:05:13,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:05:13,047 INFO L225 Difference]: With dead ends: 142 [2020-10-12 10:05:13,047 INFO L226 Difference]: Without dead ends: 140 [2020-10-12 10:05:13,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=811, Invalid=3881, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 10:05:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-12 10:05:13,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2020-10-12 10:05:13,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-12 10:05:13,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2020-10-12 10:05:13,064 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 127 [2020-10-12 10:05:13,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:05:13,064 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2020-10-12 10:05:13,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-12 10:05:13,064 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2020-10-12 10:05:13,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-12 10:05:13,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:05:13,065 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:05:13,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 10:05:13,066 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:05:13,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:05:13,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1593909724, now seen corresponding path program 19 times [2020-10-12 10:05:13,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:05:13,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187762281] [2020-10-12 10:05:13,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:05:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:13,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:13,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:18,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:18,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 10:05:18,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:05:18,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 10:05:18,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 10:05:18,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:05:18,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:05:18,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:18,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:05:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:18,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:18,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:18,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:05:18,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:18,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:18,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:18,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:18,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:18,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:18,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:18,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:05:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:18,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:18,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:18,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:18,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:18,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:18,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:18,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:18,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:18,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:18,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:18,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 10:05:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:18,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:18,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:18,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:18,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:18,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:18,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:18,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:18,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 10:05:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:18,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:18,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:18,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:18,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:18,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:18,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:18,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:18,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:18,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:18,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:18,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:05:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:18,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:18,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:18,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:18,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:18,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:05:18,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:18,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:18,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:18,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:18,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:18,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:05:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:18,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:18,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:18,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:18,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:18,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:18,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:18,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:18,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:18,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:05:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:18,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:18,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:18,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:18,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:18,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:18,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:18,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:18,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:05:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:18,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:18,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:18,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:18,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:18,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:18,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:18,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:18,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:18,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:18,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 10:05:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:18,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:18,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:18,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:18,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:18,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:18,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:18,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:18,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:18,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:18,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:18,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 10:05:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:18,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:18,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:18,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:18,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:18,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:18,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:18,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:18,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 10:05:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:18,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:18,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:18,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:18,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:18,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:18,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:18,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:18,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:18,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:18,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 20 proven. 100 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-12 10:05:18,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187762281] [2020-10-12 10:05:18,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:05:18,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:05:18,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529163285] [2020-10-12 10:05:18,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:05:18,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:05:18,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:05:18,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:05:18,367 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand 14 states. [2020-10-12 10:05:18,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:05:18,669 INFO L93 Difference]: Finished difference Result 255 states and 260 transitions. [2020-10-12 10:05:18,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 10:05:18,672 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 135 [2020-10-12 10:05:18,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:05:18,673 INFO L225 Difference]: With dead ends: 255 [2020-10-12 10:05:18,674 INFO L226 Difference]: Without dead ends: 144 [2020-10-12 10:05:18,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:05:18,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-12 10:05:18,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2020-10-12 10:05:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-12 10:05:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2020-10-12 10:05:18,701 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 135 [2020-10-12 10:05:18,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:05:18,701 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2020-10-12 10:05:18,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:05:18,701 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2020-10-12 10:05:18,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-12 10:05:18,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:05:18,703 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:05:18,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 10:05:18,703 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:05:18,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:05:18,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1096074912, now seen corresponding path program 20 times [2020-10-12 10:05:18,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:05:18,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894132304] [2020-10-12 10:05:18,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:05:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:18,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:18,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:22,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:23,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:23,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-12 10:05:23,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:05:23,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 10:05:23,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 10:05:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 10:05:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 10:05:23,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:24,391 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 25 [2020-10-12 10:05:24,681 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 18 [2020-10-12 10:05:24,881 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 26 [2020-10-12 10:05:25,227 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 19 [2020-10-12 10:05:25,508 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 26 [2020-10-12 10:05:25,809 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 19 [2020-10-12 10:05:26,083 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 26 [2020-10-12 10:05:26,418 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 19 [2020-10-12 10:05:26,597 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 26 [2020-10-12 10:05:26,929 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 19 [2020-10-12 10:05:27,170 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 26 [2020-10-12 10:05:27,657 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 26 [2020-10-12 10:05:30,010 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 105 DAG size of output: 19 [2020-10-12 10:05:30,245 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 26 [2020-10-12 10:05:30,455 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 19 [2020-10-12 10:05:30,682 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 26 [2020-10-12 10:05:33,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:05:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:33,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:33,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:33,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:05:33,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:33,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:33,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:33,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:33,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:05:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:33,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:33,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:33,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:33,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:33,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:05:33,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:33,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:33,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:33,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:33,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:33,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:05:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:33,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:33,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:33,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:33,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:33,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:33,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:33,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:33,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 10:05:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:33,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:33,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:33,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:33,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:33,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:33,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:33,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:33,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:05:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:33,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:33,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:33,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:33,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:33,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:33,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:33,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:33,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:05:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:33,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:33,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:33,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:33,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:33,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:33,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:33,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:33,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:33,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:33,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 10:05:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:33,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:33,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:33,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:33,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:33,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:33,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:33,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:33,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 10:05:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:33,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:33,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:33,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:33,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:33,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:33,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:33,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:33,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 10:05:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:33,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:33,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:33,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:33,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:33,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:33,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:33,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:33,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 10:05:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:33,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:33,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:33,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:33,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:33,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:33,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:33,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:33,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:33,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:33,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 10:05:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:33,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:33,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:33,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:33,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:33,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:33,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:33,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:33,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:33,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:33,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 31 proven. 310 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-12 10:05:33,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894132304] [2020-10-12 10:05:33,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:05:33,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-12 10:05:33,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072911163] [2020-10-12 10:05:33,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-12 10:05:33,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:05:33,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-12 10:05:33,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1473, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 10:05:33,806 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand 40 states. [2020-10-12 10:05:39,220 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2020-10-12 10:05:39,655 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-12 10:05:40,375 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-10-12 10:05:41,606 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2020-10-12 10:05:43,924 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-12 10:05:45,760 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-12 10:05:47,450 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-12 10:05:49,360 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-12 10:05:50,860 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-12 10:05:52,372 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-12 10:05:53,982 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-12 10:05:55,406 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-12 10:05:57,593 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2020-10-12 10:05:59,520 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2020-10-12 10:06:00,647 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2020-10-12 10:06:02,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:02,436 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions. [2020-10-12 10:06:02,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-12 10:06:02,445 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 139 [2020-10-12 10:06:02,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:02,446 INFO L225 Difference]: With dead ends: 154 [2020-10-12 10:06:02,446 INFO L226 Difference]: Without dead ends: 152 [2020-10-12 10:06:02,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=1025, Invalid=4981, Unknown=0, NotChecked=0, Total=6006 [2020-10-12 10:06:02,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-12 10:06:02,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2020-10-12 10:06:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-12 10:06:02,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2020-10-12 10:06:02,472 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 139 [2020-10-12 10:06:02,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:02,473 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2020-10-12 10:06:02,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-12 10:06:02,473 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2020-10-12 10:06:02,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-12 10:06:02,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:02,475 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:02,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 10:06:02,475 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:02,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:02,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1384044503, now seen corresponding path program 21 times [2020-10-12 10:06:02,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:02,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331357750] [2020-10-12 10:06:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:02,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:02,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:07,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:07,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 10:06:07,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 10:06:07,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 10:06:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 10:06:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 10:06:07,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:07,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:07,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:07,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:07,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:07,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:07,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:07,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:07,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:07,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:07,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:06:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:07,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:07,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:07,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:07,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:07,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:07,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:06:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:07,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:07,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:07,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:07,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:07,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:07,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:07,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 10:06:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:07,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:07,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:07,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:07,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:07,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:07,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:07,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:07,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:07,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:07,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:07,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:06:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:07,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:07,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:07,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:07,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:07,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:07,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:07,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:07,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:07,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:07,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:06:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:07,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:07,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:07,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:07,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:07,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:07,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:07,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 10:06:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:07,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:07,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:07,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:07,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:07,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:07,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:07,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:07,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:07,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:07,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:07,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 10:06:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:07,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:07,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:07,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:07,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:07,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:07,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:07,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:07,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:07,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:07,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:07,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 10:06:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:07,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:07,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:07,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:07,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:07,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:07,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:07,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:07,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 10:06:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:07,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:07,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:07,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:07,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:07,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:07,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:07,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:07,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:07,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 10:06:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:07,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:07,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:07,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:07,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:07,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:07,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:07,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:07,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:07,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 10:06:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:07,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:07,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:07,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:07,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:07,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:07,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:07,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 22 proven. 121 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2020-10-12 10:06:07,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331357750] [2020-10-12 10:06:07,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:07,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 10:06:07,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794490985] [2020-10-12 10:06:07,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 10:06:07,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:07,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 10:06:07,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:06:07,979 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand 15 states. [2020-10-12 10:06:08,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:08,534 INFO L93 Difference]: Finished difference Result 277 states and 282 transitions. [2020-10-12 10:06:08,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:06:08,538 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-10-12 10:06:08,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:08,540 INFO L225 Difference]: With dead ends: 277 [2020-10-12 10:06:08,540 INFO L226 Difference]: Without dead ends: 156 [2020-10-12 10:06:08,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:06:08,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-12 10:06:08,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2020-10-12 10:06:08,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-12 10:06:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 156 transitions. [2020-10-12 10:06:08,565 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 156 transitions. Word has length 147 [2020-10-12 10:06:08,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:08,565 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 156 transitions. [2020-10-12 10:06:08,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 10:06:08,565 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 156 transitions. [2020-10-12 10:06:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 10:06:08,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:08,567 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:08,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 10:06:08,567 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:08,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:08,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1114581421, now seen corresponding path program 22 times [2020-10-12 10:06:08,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:08,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4512668] [2020-10-12 10:06:08,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:08,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:08,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:13,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:13,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-12 10:06:13,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:13,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 10:06:13,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 10:06:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:13,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 10:06:13,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:14,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:14,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:14,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:14,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:14,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:14,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:14,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:14,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:14,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 10:06:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:14,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:14,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:14,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:14,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:14,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:14,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:14,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:14,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 10:06:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:14,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:14,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:14,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:14,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:14,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:14,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:14,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:14,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:14,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:14,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:14,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:06:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:14,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:14,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:14,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:14,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:14,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:14,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:14,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:14,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:14,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:06:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:14,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:14,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:14,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:14,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:14,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:14,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:14,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:14,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:06:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:14,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:14,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:14,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:14,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:14,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:14,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:14,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:14,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:14,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:14,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:14,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:06:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:14,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:14,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:14,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:14,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:14,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:14,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:14,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 10:06:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:14,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:14,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:14,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:14,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:14,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:14,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:14,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:14,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:14,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:14,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:14,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 10:06:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:14,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:14,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:14,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:14,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:14,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:14,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:14,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:14,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 10:06:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:14,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:14,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:14,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:14,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:14,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:14,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:14,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 10:06:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:14,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:14,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:14,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:14,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:14,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:14,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:14,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 10:06:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:14,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:14,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:14,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:14,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:14,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:14,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:14,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 22 proven. 144 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2020-10-12 10:06:14,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4512668] [2020-10-12 10:06:14,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:14,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:06:14,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233554703] [2020-10-12 10:06:14,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:06:14,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:14,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:06:14,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:06:14,064 INFO L87 Difference]: Start difference. First operand 154 states and 156 transitions. Second operand 16 states. [2020-10-12 10:06:14,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:14,503 INFO L93 Difference]: Finished difference Result 283 states and 288 transitions. [2020-10-12 10:06:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 10:06:14,507 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 151 [2020-10-12 10:06:14,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:14,508 INFO L225 Difference]: With dead ends: 283 [2020-10-12 10:06:14,508 INFO L226 Difference]: Without dead ends: 160 [2020-10-12 10:06:14,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:06:14,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-12 10:06:14,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-10-12 10:06:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-12 10:06:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions. [2020-10-12 10:06:14,532 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 151 [2020-10-12 10:06:14,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:14,533 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 160 transitions. [2020-10-12 10:06:14,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:06:14,533 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 160 transitions. [2020-10-12 10:06:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-12 10:06:14,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:14,534 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:14,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 10:06:14,535 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:14,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:14,535 INFO L82 PathProgramCache]: Analyzing trace with hash -492034353, now seen corresponding path program 23 times [2020-10-12 10:06:14,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:14,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107777591] [2020-10-12 10:06:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:14,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:14,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:19,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:19,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-12 10:06:19,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:19,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 10:06:19,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:19,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:06:19,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:19,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 10:06:19,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:20,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:20,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:20,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:20,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:20,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:20,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:20,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:20,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:06:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:20,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:20,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:20,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:20,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:20,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:20,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:20,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:20,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 10:06:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:20,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:20,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:20,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:20,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:20,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:20,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:20,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:20,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:20,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:20,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:20,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:06:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:20,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:20,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:20,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:20,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:20,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:20,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:20,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:20,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:20,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:20,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:20,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:06:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:20,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:20,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:20,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:20,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:20,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:20,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:20,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:20,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:20,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 10:06:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:20,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:20,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:20,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:20,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:20,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:20,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:20,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:20,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 10:06:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:20,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:20,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:20,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:20,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:20,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:20,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:20,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:20,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:20,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:20,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:20,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 10:06:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:20,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:20,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:20,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:20,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:20,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:20,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:20,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:20,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 10:06:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:20,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:20,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:20,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:20,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:20,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:20,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:20,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:20,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:20,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:20,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:20,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 10:06:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:20,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:20,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:20,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:20,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:20,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:20,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:20,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:20,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:20,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:20,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:20,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 10:06:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:20,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:20,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:20,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:20,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:20,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:20,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:20,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:20,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:20,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:20,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:20,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 10:06:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:20,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:20,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:20,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:20,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:20,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:20,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:20,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:20,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:20,163 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 22 proven. 169 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2020-10-12 10:06:20,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107777591] [2020-10-12 10:06:20,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:20,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:06:20,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767874253] [2020-10-12 10:06:20,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:06:20,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:20,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:06:20,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:06:20,165 INFO L87 Difference]: Start difference. First operand 158 states and 160 transitions. Second operand 17 states. [2020-10-12 10:06:20,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:20,755 INFO L93 Difference]: Finished difference Result 289 states and 294 transitions. [2020-10-12 10:06:20,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 10:06:20,758 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 155 [2020-10-12 10:06:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:20,760 INFO L225 Difference]: With dead ends: 289 [2020-10-12 10:06:20,760 INFO L226 Difference]: Without dead ends: 164 [2020-10-12 10:06:20,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:06:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-12 10:06:20,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2020-10-12 10:06:20,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 10:06:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2020-10-12 10:06:20,784 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 155 [2020-10-12 10:06:20,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:20,784 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions. [2020-10-12 10:06:20,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:06:20,784 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions. [2020-10-12 10:06:20,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 10:06:20,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:20,786 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:20,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 10:06:20,786 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:20,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:20,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1822701237, now seen corresponding path program 24 times [2020-10-12 10:06:20,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:20,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973527768] [2020-10-12 10:06:20,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:20,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:20,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:25,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:25,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-12 10:06:25,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 10:06:25,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 10:06:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 10:06:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:26,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:26,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:26,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:26,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:26,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:26,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:26,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:26,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:26,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 10:06:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:26,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:26,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:26,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:26,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:26,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:26,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:26,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:06:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:26,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:26,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:26,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:26,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:26,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:26,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:26,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:26,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:06:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:26,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:26,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:26,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:26,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:26,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:26,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:26,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:26,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:26,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:26,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:26,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:06:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:26,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:26,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:26,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:26,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:26,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:26,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:26,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:26,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:26,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:26,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:26,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:06:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:26,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:26,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:26,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:26,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:26,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:26,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:26,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:26,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 10:06:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:26,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:26,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:26,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:26,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:26,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:26,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:26,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:26,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 10:06:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:26,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:26,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:26,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:26,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:26,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:26,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:26,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:26,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 10:06:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:26,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:26,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:26,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:26,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:26,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:26,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:26,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:26,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:26,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:26,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:26,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 10:06:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:26,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:26,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:26,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:26,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:26,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:26,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:26,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:26,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 10:06:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:26,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:26,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:26,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:26,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:26,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:26,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:26,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:26,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:26,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:26,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:26,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 10:06:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:26,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:26,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:26,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:26,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:26,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:26,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:26,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:26,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:26,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:26,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 22 proven. 196 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2020-10-12 10:06:26,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973527768] [2020-10-12 10:06:26,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:26,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 10:06:26,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664894453] [2020-10-12 10:06:26,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 10:06:26,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:26,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 10:06:26,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:06:26,452 INFO L87 Difference]: Start difference. First operand 162 states and 164 transitions. Second operand 18 states. [2020-10-12 10:06:27,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:27,179 INFO L93 Difference]: Finished difference Result 295 states and 300 transitions. [2020-10-12 10:06:27,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 10:06:27,183 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 159 [2020-10-12 10:06:27,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:27,185 INFO L225 Difference]: With dead ends: 295 [2020-10-12 10:06:27,185 INFO L226 Difference]: Without dead ends: 168 [2020-10-12 10:06:27,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:06:27,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-12 10:06:27,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2020-10-12 10:06:27,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-12 10:06:27,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2020-10-12 10:06:27,206 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 159 [2020-10-12 10:06:27,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:27,206 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2020-10-12 10:06:27,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 10:06:27,207 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2020-10-12 10:06:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-12 10:06:27,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:27,208 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:27,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 10:06:27,209 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:27,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:27,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1386921415, now seen corresponding path program 25 times [2020-10-12 10:06:27,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:27,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877109743] [2020-10-12 10:06:27,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:27,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:32,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:32,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-12 10:06:32,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:32,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 10:06:32,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 10:06:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 10:06:32,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:32,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:32,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:32,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:32,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:32,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:32,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:32,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:32,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:32,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:32,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:32,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:32,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 10:06:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:32,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:32,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:32,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:32,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:32,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:32,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:32,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:32,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:32,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:32,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:32,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:06:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:32,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:32,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:32,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:32,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:32,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:32,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:32,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:32,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:06:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:32,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:32,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:32,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:32,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:32,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:32,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:32,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:32,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:32,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:32,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:32,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 10:06:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:32,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:32,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:32,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:32,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:32,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:32,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:32,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 10:06:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:32,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:32,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:32,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:32,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:32,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:32,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:32,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:32,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 10:06:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:32,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:32,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:32,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:32,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:32,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:32,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:32,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:32,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:32,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:32,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:32,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 10:06:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:32,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:32,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:32,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:32,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:32,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:32,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:32,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:32,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 10:06:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:32,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:32,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:32,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:32,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:32,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:06:32,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:32,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:32,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:32,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 10:06:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:32,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:32,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:32,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:32,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:32,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:32,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:32,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:32,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:32,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:32,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:32,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 10:06:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:32,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:32,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:32,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:32,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:32,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:06:32,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:32,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:32,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-12 10:06:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:32,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:32,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:32,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:32,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:32,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:32,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:32,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 22 proven. 225 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2020-10-12 10:06:32,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877109743] [2020-10-12 10:06:32,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:32,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 10:06:32,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696692465] [2020-10-12 10:06:32,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 10:06:32,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:32,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 10:06:32,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:06:32,929 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand 19 states. [2020-10-12 10:06:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:33,393 INFO L93 Difference]: Finished difference Result 301 states and 306 transitions. [2020-10-12 10:06:33,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 10:06:33,395 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 163 [2020-10-12 10:06:33,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:33,396 INFO L225 Difference]: With dead ends: 301 [2020-10-12 10:06:33,396 INFO L226 Difference]: Without dead ends: 172 [2020-10-12 10:06:33,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:06:33,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-12 10:06:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2020-10-12 10:06:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-12 10:06:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 172 transitions. [2020-10-12 10:06:33,420 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 172 transitions. Word has length 163 [2020-10-12 10:06:33,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:33,420 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 172 transitions. [2020-10-12 10:06:33,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 10:06:33,420 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 172 transitions. [2020-10-12 10:06:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 10:06:33,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:33,422 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:33,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 10:06:33,422 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:33,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:33,422 INFO L82 PathProgramCache]: Analyzing trace with hash -719059901, now seen corresponding path program 26 times [2020-10-12 10:06:33,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:33,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265898786] [2020-10-12 10:06:33,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:33,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:33,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:38,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:38,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-12 10:06:38,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:38,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 10:06:38,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:06:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 10:06:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 10:06:38,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:39,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:39,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:39,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:39,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:39,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:39,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:39,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:06:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:39,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:39,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:39,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:39,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:39,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:39,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:39,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:39,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:39,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:39,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:39,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:06:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:39,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:39,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:39,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:39,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:39,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:39,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:39,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:39,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:06:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:39,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:39,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:39,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:39,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:39,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:39,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:39,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:39,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:39,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:39,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:06:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:39,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:39,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:39,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:39,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:39,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:39,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:39,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:39,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 10:06:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:39,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:39,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:39,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:39,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:39,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:39,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:39,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 10:06:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:39,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:39,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:39,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:39,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:39,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:39,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:39,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:39,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:39,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:39,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:39,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 10:06:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:39,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:39,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:39,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:39,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:39,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:39,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:39,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:39,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 10:06:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:39,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:39,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:39,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:39,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:39,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:39,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:39,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 10:06:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:39,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:39,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:39,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:39,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:39,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:39,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:39,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 10:06:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:39,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:39,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:39,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:39,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:39,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:39,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:39,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:39,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:39,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:39,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:06:39,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 10:06:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:39,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:39,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:39,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:39,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:39,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:39,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:39,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:39,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:39,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 22 proven. 256 refuted. 0 times theorem prover too weak. 718 trivial. 0 not checked. [2020-10-12 10:06:39,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265898786] [2020-10-12 10:06:39,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:39,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 10:06:39,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081732832] [2020-10-12 10:06:39,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 10:06:39,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:39,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 10:06:39,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:06:39,148 INFO L87 Difference]: Start difference. First operand 170 states and 172 transitions. Second operand 20 states. [2020-10-12 10:06:39,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:39,709 INFO L93 Difference]: Finished difference Result 307 states and 312 transitions. [2020-10-12 10:06:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 10:06:39,716 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 167 [2020-10-12 10:06:39,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:39,717 INFO L225 Difference]: With dead ends: 307 [2020-10-12 10:06:39,717 INFO L226 Difference]: Without dead ends: 176 [2020-10-12 10:06:39,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:06:39,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-12 10:06:39,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2020-10-12 10:06:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-12 10:06:39,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 176 transitions. [2020-10-12 10:06:39,739 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 176 transitions. Word has length 167 [2020-10-12 10:06:39,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:39,739 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 176 transitions. [2020-10-12 10:06:39,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 10:06:39,739 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 176 transitions. [2020-10-12 10:06:39,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 10:06:39,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:39,741 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:39,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 10:06:39,741 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:39,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:39,741 INFO L82 PathProgramCache]: Analyzing trace with hash -2133680961, now seen corresponding path program 27 times [2020-10-12 10:06:39,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:39,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147498343] [2020-10-12 10:06:39,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:39,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:39,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:44,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:44,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 10:06:44,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 10:06:44,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 10:06:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 10:06:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:45,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:45,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:45,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:45,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:45,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:45,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:45,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:45,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:45,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:06:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:45,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:45,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:45,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:45,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:45,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:45,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:45,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:45,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:45,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:45,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:06:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:45,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:45,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:45,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:45,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:45,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:45,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 10:06:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:45,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:45,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:45,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:45,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:45,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:45,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:45,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:45,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 10:06:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:45,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:45,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:45,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:45,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:45,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:45,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:45,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:45,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 10:06:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:45,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:45,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:45,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:45,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:45,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:45,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:45,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:45,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:45,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:45,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:45,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 10:06:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:45,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:45,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:45,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:45,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:45,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:45,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:45,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:45,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 10:06:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:45,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:45,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:45,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:45,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:45,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:45,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:45,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:45,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 10:06:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:45,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:45,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:45,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:45,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:45,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:45,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:45,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 10:06:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:45,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:45,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:45,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:45,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:45,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:45,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:45,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:45,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:45,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:45,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:45,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-12 10:06:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:45,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:45,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:45,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:45,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:45,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:45,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:45,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:45,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-12 10:06:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:45,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:45,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:45,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:45,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:45,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:45,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:45,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:45,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:45,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 22 proven. 289 refuted. 0 times theorem prover too weak. 751 trivial. 0 not checked. [2020-10-12 10:06:45,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147498343] [2020-10-12 10:06:45,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:45,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 10:06:45,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899131252] [2020-10-12 10:06:45,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 10:06:45,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:45,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 10:06:45,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:06:45,441 INFO L87 Difference]: Start difference. First operand 174 states and 176 transitions. Second operand 21 states. [2020-10-12 10:06:46,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:46,065 INFO L93 Difference]: Finished difference Result 313 states and 318 transitions. [2020-10-12 10:06:46,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 10:06:46,068 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 171 [2020-10-12 10:06:46,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:46,070 INFO L225 Difference]: With dead ends: 313 [2020-10-12 10:06:46,070 INFO L226 Difference]: Without dead ends: 180 [2020-10-12 10:06:46,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:06:46,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-12 10:06:46,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2020-10-12 10:06:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-12 10:06:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 180 transitions. [2020-10-12 10:06:46,098 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 180 transitions. Word has length 171 [2020-10-12 10:06:46,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:46,098 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 180 transitions. [2020-10-12 10:06:46,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 10:06:46,098 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 180 transitions. [2020-10-12 10:06:46,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-12 10:06:46,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:46,100 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:46,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 10:06:46,100 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:46,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:46,100 INFO L82 PathProgramCache]: Analyzing trace with hash -314472645, now seen corresponding path program 28 times [2020-10-12 10:06:46,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:46,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909446927] [2020-10-12 10:06:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:46,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:51,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:51,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-12 10:06:51,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:51,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 10:06:51,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:06:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 10:06:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 10:06:51,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:51,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:51,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:51,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:51,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:51,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:51,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:51,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:51,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:51,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:51,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:51,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:51,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:06:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:51,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:51,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:51,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:51,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:51,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:51,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:51,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:51,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:06:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:51,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:51,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:51,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:51,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:51,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:51,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:51,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:51,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:51,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:06:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:51,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:51,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:51,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:51,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:51,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:51,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:51,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:51,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 10:06:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:51,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:51,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:51,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:51,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:51,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:51,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:51,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:51,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:51,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:51,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:51,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 10:06:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:51,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:51,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:51,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:51,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:51,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:51,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:51,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:51,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 10:06:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:51,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:51,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:51,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:51,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:51,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:51,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:51,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:51,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:51,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:51,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:51,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 10:06:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:51,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:51,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:51,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:51,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:51,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:51,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:51,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:51,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:51,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:51,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:51,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 10:06:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:51,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:51,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:51,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:51,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:51,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:51,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:51,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:51,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:51,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:51,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:51,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 10:06:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:51,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:51,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:51,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:51,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:51,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:51,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:51,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:51,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:51,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:51,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:51,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 10:06:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:51,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:51,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:51,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:51,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:51,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:51,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:51,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:51,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:51,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:51,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:51,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-12 10:06:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:51,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:51,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:51,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:51,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:51,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:51,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:51,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:51,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:51,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:51,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:51,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1132 backedges. 22 proven. 324 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2020-10-12 10:06:51,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909446927] [2020-10-12 10:06:51,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:51,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 10:06:51,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162251286] [2020-10-12 10:06:51,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 10:06:51,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:51,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 10:06:51,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:06:51,887 INFO L87 Difference]: Start difference. First operand 178 states and 180 transitions. Second operand 22 states. [2020-10-12 10:06:52,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:52,606 INFO L93 Difference]: Finished difference Result 319 states and 324 transitions. [2020-10-12 10:06:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 10:06:52,609 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 175 [2020-10-12 10:06:52,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:52,611 INFO L225 Difference]: With dead ends: 319 [2020-10-12 10:06:52,611 INFO L226 Difference]: Without dead ends: 184 [2020-10-12 10:06:52,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:06:52,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-12 10:06:52,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2020-10-12 10:06:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-12 10:06:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 184 transitions. [2020-10-12 10:06:52,632 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 184 transitions. Word has length 175 [2020-10-12 10:06:52,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:52,632 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 184 transitions. [2020-10-12 10:06:52,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 10:06:52,633 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 184 transitions. [2020-10-12 10:06:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-12 10:06:52,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:52,634 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:52,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 10:06:52,634 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:52,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1669055415, now seen corresponding path program 29 times [2020-10-12 10:06:52,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:52,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833569258] [2020-10-12 10:06:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:52,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:52,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:57,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:57,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-12 10:06:57,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:57,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 10:06:57,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:57,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 10:06:57,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:57,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 10:06:57,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:58,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:58,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:06:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 10:06:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 10:06:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 10:06:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 10:06:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 10:06:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 10:06:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 10:06:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-12 10:06:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-12 10:06:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-12 10:06:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 22 proven. 361 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2020-10-12 10:06:58,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833569258] [2020-10-12 10:06:58,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:58,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 10:06:58,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178424785] [2020-10-12 10:06:58,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 10:06:58,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:58,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 10:06:58,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:06:58,516 INFO L87 Difference]: Start difference. First operand 182 states and 184 transitions. Second operand 23 states. [2020-10-12 10:06:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:59,133 INFO L93 Difference]: Finished difference Result 325 states and 330 transitions. [2020-10-12 10:06:59,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 10:06:59,135 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 179 [2020-10-12 10:06:59,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:59,137 INFO L225 Difference]: With dead ends: 325 [2020-10-12 10:06:59,137 INFO L226 Difference]: Without dead ends: 188 [2020-10-12 10:06:59,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:06:59,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-12 10:06:59,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2020-10-12 10:06:59,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-12 10:06:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 188 transitions. [2020-10-12 10:06:59,163 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 188 transitions. Word has length 179 [2020-10-12 10:06:59,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:59,163 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 188 transitions. [2020-10-12 10:06:59,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 10:06:59,163 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 188 transitions. [2020-10-12 10:06:59,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-12 10:06:59,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:59,164 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:59,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 10:06:59,165 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:59,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:59,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1577865779, now seen corresponding path program 30 times [2020-10-12 10:06:59,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:59,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149392803] [2020-10-12 10:06:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:59,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:59,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:04,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:04,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-12 10:07:04,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:07:04,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 10:07:04,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:04,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 10:07:04,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:07:04,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 10:07:04,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:05,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:07:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:05,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:05,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:05,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:07:05,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:05,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:05,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:05,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:07:05,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:05,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:05,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:07:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:05,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:05,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:05,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:05,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:05,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:05,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:05,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:05,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:07:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:05,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:05,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:05,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:05,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:05,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:05,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:05,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:05,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:05,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:05,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 10:07:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:05,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:05,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:05,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:05,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:05,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:05,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:05,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:05,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 10:07:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:05,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:05,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:05,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:05,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:05,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:05,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:05,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 10:07:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:05,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:05,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:05,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:05,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:05,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:05,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:05,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:05,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 10:07:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:05,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:05,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:05,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:05,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:05,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:05,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:05,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:05,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 10:07:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:05,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:05,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:05,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:05,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:05,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:05,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:05,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:05,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 10:07:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:05,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:05,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:05,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:05,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:05,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:05,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:05,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:05,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:05,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:05,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:05,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 10:07:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:05,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:05,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:05,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:05,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:05,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:05,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:05,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:05,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-12 10:07:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:05,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:05,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:05,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:05,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:05,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:05,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:05,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:05,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:05,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:05,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:05,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-12 10:07:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:05,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:05,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:05,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:05,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:05,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:05,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:05,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:05,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:05,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1284 backedges. 22 proven. 400 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2020-10-12 10:07:05,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149392803] [2020-10-12 10:07:05,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:07:05,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 10:07:05,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359402388] [2020-10-12 10:07:05,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 10:07:05,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:07:05,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 10:07:05,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 10:07:05,203 INFO L87 Difference]: Start difference. First operand 186 states and 188 transitions. Second operand 24 states. [2020-10-12 10:07:06,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:07:06,028 INFO L93 Difference]: Finished difference Result 331 states and 336 transitions. [2020-10-12 10:07:06,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 10:07:06,031 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 183 [2020-10-12 10:07:06,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:07:06,033 INFO L225 Difference]: With dead ends: 331 [2020-10-12 10:07:06,033 INFO L226 Difference]: Without dead ends: 192 [2020-10-12 10:07:06,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 10:07:06,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-12 10:07:06,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2020-10-12 10:07:06,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-12 10:07:06,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 192 transitions. [2020-10-12 10:07:06,063 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 192 transitions. Word has length 183 [2020-10-12 10:07:06,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:07:06,064 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 192 transitions. [2020-10-12 10:07:06,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 10:07:06,064 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 192 transitions. [2020-10-12 10:07:06,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-12 10:07:06,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:07:06,066 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:07:06,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 10:07:06,066 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:07:06,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:07:06,067 INFO L82 PathProgramCache]: Analyzing trace with hash 150876847, now seen corresponding path program 31 times [2020-10-12 10:07:06,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:07:06,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394561327] [2020-10-12 10:07:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:07:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:06,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:06,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking...