/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:49:28,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:49:28,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:49:28,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:49:28,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:49:28,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:49:28,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:49:28,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:49:28,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:49:28,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:49:28,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:49:28,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:49:28,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:49:28,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:49:28,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:49:28,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:49:28,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:49:28,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:49:28,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:49:28,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:49:28,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:49:28,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:49:28,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:49:28,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:49:28,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:49:28,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:49:28,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:49:28,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:49:28,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:49:28,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:49:28,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:49:28,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:49:28,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:49:28,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:49:28,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:49:28,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:49:28,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:49:28,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:49:28,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:49:28,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:49:28,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:49:28,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:49:28,245 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:49:28,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:49:28,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:49:28,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:49:28,248 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:49:28,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:49:28,249 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:49:28,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:49:28,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:49:28,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:49:28,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:49:28,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:49:28,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:49:28,251 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:49:28,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:49:28,252 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:49:28,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:49:28,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:49:28,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:49:28,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:49:28,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:49:28,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:49:28,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:49:28,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:49:28,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:49:28,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:49:28,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:49:28,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:49:28,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:49:28,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:49:28,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:49:28,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:49:28,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:49:28,761 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:49:28,762 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:49:28,763 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-2.c [2020-09-25 07:49:28,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/269bced0d/7b11ae447d564d6b8c4bba4b2287c72e/FLAG7f9c8ef65 [2020-09-25 07:49:29,408 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:49:29,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-2.c [2020-09-25 07:49:29,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/269bced0d/7b11ae447d564d6b8c4bba4b2287c72e/FLAG7f9c8ef65 [2020-09-25 07:49:29,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/269bced0d/7b11ae447d564d6b8c4bba4b2287c72e [2020-09-25 07:49:29,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:49:29,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:49:29,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:49:29,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:49:29,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:49:29,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:49:29" (1/1) ... [2020-09-25 07:49:29,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:29, skipping insertion in model container [2020-09-25 07:49:29,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:49:29" (1/1) ... [2020-09-25 07:49:29,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:49:29,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:49:30,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:49:30,086 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:49:30,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:49:30,133 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:49:30,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:30 WrapperNode [2020-09-25 07:49:30,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:49:30,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:49:30,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:49:30,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:49:30,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:30" (1/1) ... [2020-09-25 07:49:30,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:30" (1/1) ... [2020-09-25 07:49:30,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:30" (1/1) ... [2020-09-25 07:49:30,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:30" (1/1) ... [2020-09-25 07:49:30,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:30" (1/1) ... [2020-09-25 07:49:30,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:30" (1/1) ... [2020-09-25 07:49:30,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:30" (1/1) ... [2020-09-25 07:49:30,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:49:30,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:49:30,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:49:30,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:49:30,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:49:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:49:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:49:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 07:49:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:49:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:49:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:49:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 07:49:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:49:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:49:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 07:49:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:49:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:49:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:49:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:49:30,741 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:49:30,742 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 07:49:30,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:49:30 BoogieIcfgContainer [2020-09-25 07:49:30,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:49:30,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:49:30,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:49:30,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:49:30,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:49:29" (1/3) ... [2020-09-25 07:49:30,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c83e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:49:30, skipping insertion in model container [2020-09-25 07:49:30,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:30" (2/3) ... [2020-09-25 07:49:30,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c83e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:49:30, skipping insertion in model container [2020-09-25 07:49:30,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:49:30" (3/3) ... [2020-09-25 07:49:30,759 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-2.c [2020-09-25 07:49:30,771 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:49:30,781 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:49:30,802 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:49:30,832 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:49:30,832 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:49:30,832 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:49:30,832 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:49:30,832 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:49:30,833 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:49:30,833 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:49:30,833 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:49:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-09-25 07:49:30,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 07:49:30,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:30,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:30,867 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:30,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:30,873 INFO L82 PathProgramCache]: Analyzing trace with hash 2031307650, now seen corresponding path program 1 times [2020-09-25 07:49:30,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:30,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399747648] [2020-09-25 07:49:30,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:31,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:31,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:31,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:31,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 07:49:31,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:49:31,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 07:49:31,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:31,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:31,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:31,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 07:49:31,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:31,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 07:49:31,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:31,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:31,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:31,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:31,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:31,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:49:31,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:31,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:31,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:31,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:31,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:31,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:31,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 07:49:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:31,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:31,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:31,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:31,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:31,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:49:31,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:31,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:31,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:31,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:31,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:31,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:31,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399747648] [2020-09-25 07:49:31,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:49:31,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:49:31,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203851017] [2020-09-25 07:49:31,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:49:31,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:31,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:49:31,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:49:31,464 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 3 states. [2020-09-25 07:49:31,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:31,637 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2020-09-25 07:49:31,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:49:31,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-09-25 07:49:31,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:31,653 INFO L225 Difference]: With dead ends: 102 [2020-09-25 07:49:31,653 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 07:49:31,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:49:31,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 07:49:31,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 07:49:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 07:49:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 07:49:31,715 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 37 [2020-09-25 07:49:31,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:31,716 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 07:49:31,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:49:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 07:49:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 07:49:31,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:31,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:31,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:49:31,719 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:31,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:31,719 INFO L82 PathProgramCache]: Analyzing trace with hash 897550373, now seen corresponding path program 1 times [2020-09-25 07:49:31,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:31,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152489273] [2020-09-25 07:49:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:31,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:31,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:31,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 07:49:31,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:31,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 07:49:31,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:31,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:49:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:49:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 07:49:31,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:31,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:31,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:31,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:31,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:31,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:49:31,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:31,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:31,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:31,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:31,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 07:49:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:31,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:31,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:31,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:31,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:31,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:49:31,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:31,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:31,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:31,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:31,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:31,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:31,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152489273] [2020-09-25 07:49:31,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:49:31,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:49:31,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934189373] [2020-09-25 07:49:31,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:49:31,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:31,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:49:31,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:49:31,983 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 4 states. [2020-09-25 07:49:32,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:32,140 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2020-09-25 07:49:32,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:49:32,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-09-25 07:49:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:32,142 INFO L225 Difference]: With dead ends: 92 [2020-09-25 07:49:32,143 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 07:49:32,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:49:32,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 07:49:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 07:49:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 07:49:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-25 07:49:32,155 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 39 [2020-09-25 07:49:32,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:32,156 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-25 07:49:32,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:49:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-25 07:49:32,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 07:49:32,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:32,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:32,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:49:32,159 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:32,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:32,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1785369867, now seen corresponding path program 1 times [2020-09-25 07:49:32,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:32,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702269999] [2020-09-25 07:49:32,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:32,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:32,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:32,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 07:49:32,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 07:49:32,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:32,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:49:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:49:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:49:32,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:32,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:32,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:32,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:32,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:32,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:32,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:49:32,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:32,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:32,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:32,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:32,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:32,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:32,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 07:49:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:32,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:32,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:32,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:32,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:49:32,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:32,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:32,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:32,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:32,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702269999] [2020-09-25 07:49:32,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:32,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:49:32,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451787729] [2020-09-25 07:49:32,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:49:32,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:32,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:49:32,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:49:32,504 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 6 states. [2020-09-25 07:49:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:32,647 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2020-09-25 07:49:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:49:32,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 07:49:32,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:32,649 INFO L225 Difference]: With dead ends: 102 [2020-09-25 07:49:32,649 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 07:49:32,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:49:32,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 07:49:32,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2020-09-25 07:49:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 07:49:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2020-09-25 07:49:32,659 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 49 [2020-09-25 07:49:32,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:32,660 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2020-09-25 07:49:32,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:49:32,660 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2020-09-25 07:49:32,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 07:49:32,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:32,665 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:32,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:49:32,667 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:32,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:32,668 INFO L82 PathProgramCache]: Analyzing trace with hash 862927473, now seen corresponding path program 2 times [2020-09-25 07:49:32,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:32,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507559556] [2020-09-25 07:49:32,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:32,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:33,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:33,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 07:49:33,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:33,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-09-25 07:49:33,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:33,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:33,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:49:33,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:49:33,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:49:33,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:33,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:33,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:33,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:33,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:33,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:33,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:49:33,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:33,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:33,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:33,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:33,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:33,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:49:33,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 07:49:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:33,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:33,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:33,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:33,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:33,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:49:33,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:33,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:33,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:33,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:33,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:33,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:33,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507559556] [2020-09-25 07:49:33,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:33,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:49:33,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563081501] [2020-09-25 07:49:33,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:49:33,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:33,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:49:33,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:49:33,180 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 8 states. [2020-09-25 07:49:33,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:33,406 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2020-09-25 07:49:33,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:49:33,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-09-25 07:49:33,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:33,408 INFO L225 Difference]: With dead ends: 112 [2020-09-25 07:49:33,408 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 07:49:33,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:49:33,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 07:49:33,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2020-09-25 07:49:33,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 07:49:33,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-25 07:49:33,427 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 59 [2020-09-25 07:49:33,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:33,427 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-25 07:49:33,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:49:33,428 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-25 07:49:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 07:49:33,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:33,430 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:33,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:49:33,431 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:33,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:33,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1103681623, now seen corresponding path program 3 times [2020-09-25 07:49:33,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:33,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645148269] [2020-09-25 07:49:33,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:33,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:33,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:49:33,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:33,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-09-25 07:49:33,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:33,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:49:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:49:33,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 07:49:33,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:33,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:33,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:33,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:33,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:33,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:33,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:49:33,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:33,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:33,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 07:49:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:33,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:33,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:33,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:33,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:33,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:49:33,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:33,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:33,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:33,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:33,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645148269] [2020-09-25 07:49:33,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:33,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:49:33,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443719829] [2020-09-25 07:49:33,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:49:33,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:33,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:49:33,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:49:33,915 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 10 states. [2020-09-25 07:49:34,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:34,112 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2020-09-25 07:49:34,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 07:49:34,113 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-25 07:49:34,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:34,114 INFO L225 Difference]: With dead ends: 122 [2020-09-25 07:49:34,114 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 07:49:34,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:49:34,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 07:49:34,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2020-09-25 07:49:34,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 07:49:34,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-09-25 07:49:34,124 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 69 [2020-09-25 07:49:34,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:34,124 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-09-25 07:49:34,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:49:34,124 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-09-25 07:49:34,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 07:49:34,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:34,126 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:34,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:49:34,127 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:34,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:34,127 INFO L82 PathProgramCache]: Analyzing trace with hash -67449155, now seen corresponding path program 4 times [2020-09-25 07:49:34,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:34,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609306884] [2020-09-25 07:49:34,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:34,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:34,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:34,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 07:49:34,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-09-25 07:49:34,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:34,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:34,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:49:34,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:49:34,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:49:34,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:34,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:34,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:34,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:34,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:34,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:34,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:49:34,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:34,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:34,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:34,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:34,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:34,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:34,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 07:49:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:34,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:34,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:34,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:34,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:34,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:49:34,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:34,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:34,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:34,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:34,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:34,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609306884] [2020-09-25 07:49:34,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:34,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 07:49:34,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565263004] [2020-09-25 07:49:34,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 07:49:34,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:34,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 07:49:34,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:49:34,798 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 12 states. [2020-09-25 07:49:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:35,047 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2020-09-25 07:49:35,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 07:49:35,047 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-09-25 07:49:35,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:35,049 INFO L225 Difference]: With dead ends: 132 [2020-09-25 07:49:35,049 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 07:49:35,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 07:49:35,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 07:49:35,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2020-09-25 07:49:35,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 07:49:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2020-09-25 07:49:35,058 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 79 [2020-09-25 07:49:35,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:35,059 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2020-09-25 07:49:35,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 07:49:35,059 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2020-09-25 07:49:35,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 07:49:35,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:35,061 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:35,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:49:35,065 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:35,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:35,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2083488349, now seen corresponding path program 5 times [2020-09-25 07:49:35,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:35,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399145722] [2020-09-25 07:49:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:35,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:35,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:35,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 07:49:35,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:35,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-09-25 07:49:35,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:35,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:35,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 07:49:35,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:49:35,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 07:49:35,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:49:35,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:35,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:35,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:35,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:35,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:35,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:49:35,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:35,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:35,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:35,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 07:49:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:35,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:35,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:35,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:35,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:35,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:49:35,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:35,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:35,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:35,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:35,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:35,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399145722] [2020-09-25 07:49:35,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:35,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 07:49:35,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346652842] [2020-09-25 07:49:35,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 07:49:35,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:35,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 07:49:35,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-25 07:49:35,922 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 14 states. [2020-09-25 07:49:36,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:36,246 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2020-09-25 07:49:36,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 07:49:36,246 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2020-09-25 07:49:36,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:36,248 INFO L225 Difference]: With dead ends: 142 [2020-09-25 07:49:36,248 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 07:49:36,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-09-25 07:49:36,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 07:49:36,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 104. [2020-09-25 07:49:36,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 07:49:36,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2020-09-25 07:49:36,257 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 89 [2020-09-25 07:49:36,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:36,258 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2020-09-25 07:49:36,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 07:49:36,258 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2020-09-25 07:49:36,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 07:49:36,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:36,259 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:36,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:49:36,260 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:36,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:36,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1012745481, now seen corresponding path program 6 times [2020-09-25 07:49:36,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:36,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498382169] [2020-09-25 07:49:36,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:36,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:37,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:37,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 07:49:37,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:37,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783 [2020-09-25 07:49:37,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:37,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:37,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:49:37,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:49:37,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 07:49:37,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:37,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:37,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:37,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:37,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:37,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:37,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:49:37,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:37,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:37,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:37,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:37,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:37,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:37,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 07:49:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:37,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:37,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:37,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:37,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:37,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:49:37,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:37,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:37,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:37,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:37,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:37,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:37,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498382169] [2020-09-25 07:49:37,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:37,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 07:49:37,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407878985] [2020-09-25 07:49:37,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 07:49:37,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:37,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 07:49:37,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:49:37,327 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand 16 states. [2020-09-25 07:49:37,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:37,823 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2020-09-25 07:49:37,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 07:49:37,823 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 99 [2020-09-25 07:49:37,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:37,826 INFO L225 Difference]: With dead ends: 152 [2020-09-25 07:49:37,826 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 07:49:37,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2020-09-25 07:49:37,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 07:49:37,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 114. [2020-09-25 07:49:37,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 07:49:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2020-09-25 07:49:37,845 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 99 [2020-09-25 07:49:37,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:37,846 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2020-09-25 07:49:37,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 07:49:37,846 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2020-09-25 07:49:37,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 07:49:37,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:37,848 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:37,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:49:37,848 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:37,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:37,849 INFO L82 PathProgramCache]: Analyzing trace with hash -805534481, now seen corresponding path program 7 times [2020-09-25 07:49:37,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:37,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032226795] [2020-09-25 07:49:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:37,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:38,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:38,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 07:49:38,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:38,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 971 [2020-09-25 07:49:38,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:38,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 07:49:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:49:38,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 07:49:38,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:39,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:39,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:39,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:39,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:39,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:39,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:49:39,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:39,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:39,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:39,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:39,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:39,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:39,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-25 07:49:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:39,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:39,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:39,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:39,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:49:39,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:39,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:39,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:39,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:39,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:39,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:39,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032226795] [2020-09-25 07:49:39,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:39,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 07:49:39,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254634792] [2020-09-25 07:49:39,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 07:49:39,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:39,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 07:49:39,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-25 07:49:39,113 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 18 states. [2020-09-25 07:49:39,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:39,593 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2020-09-25 07:49:39,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 07:49:39,593 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 109 [2020-09-25 07:49:39,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:39,595 INFO L225 Difference]: With dead ends: 162 [2020-09-25 07:49:39,595 INFO L226 Difference]: Without dead ends: 132 [2020-09-25 07:49:39,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=320, Invalid=672, Unknown=0, NotChecked=0, Total=992 [2020-09-25 07:49:39,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-25 07:49:39,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 124. [2020-09-25 07:49:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-25 07:49:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2020-09-25 07:49:39,608 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 109 [2020-09-25 07:49:39,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:39,609 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2020-09-25 07:49:39,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 07:49:39,609 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2020-09-25 07:49:39,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 07:49:39,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:39,614 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:39,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 07:49:39,614 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:39,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:39,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1236165291, now seen corresponding path program 8 times [2020-09-25 07:49:39,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:39,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043975880] [2020-09-25 07:49:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:39,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:40,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:40,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 07:49:40,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:40,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-09-25 07:49:40,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:40,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:40,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 07:49:40,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:49:40,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 07:49:40,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:41,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:41,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:41,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:41,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:41,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:41,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:49:41,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:41,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:41,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:41,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:41,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:41,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:41,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 07:49:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:41,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:41,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:41,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:41,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:41,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:49:41,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:41,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:41,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:41,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:41,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:41,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:49:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:41,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043975880] [2020-09-25 07:49:41,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:41,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 07:49:41,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38973236] [2020-09-25 07:49:41,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 07:49:41,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:41,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 07:49:41,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-09-25 07:49:41,066 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand 20 states. [2020-09-25 07:49:41,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:41,569 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2020-09-25 07:49:41,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 07:49:41,570 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 119 [2020-09-25 07:49:41,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:41,571 INFO L225 Difference]: With dead ends: 172 [2020-09-25 07:49:41,571 INFO L226 Difference]: Without dead ends: 142 [2020-09-25 07:49:41,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=405, Invalid=855, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 07:49:41,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-25 07:49:41,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2020-09-25 07:49:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-25 07:49:41,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2020-09-25 07:49:41,579 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 119 [2020-09-25 07:49:41,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:41,580 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2020-09-25 07:49:41,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 07:49:41,581 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2020-09-25 07:49:41,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 07:49:41,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:41,585 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:41,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 07:49:41,586 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:41,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:41,586 INFO L82 PathProgramCache]: Analyzing trace with hash 977792571, now seen corresponding path program 9 times [2020-09-25 07:49:41,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:41,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863701687] [2020-09-25 07:49:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:41,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:42,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:42,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 07:49:42,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:42,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1327 [2020-09-25 07:49:42,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:42,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 07:49:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:49:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 07:49:42,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:49:43,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:43,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:43,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:43,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:43,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:49:43,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:43,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:43,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:43,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 07:49:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:43,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:43,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:43,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:43,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:49:43,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:43,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:43,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:43,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:49:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:43,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863701687] [2020-09-25 07:49:43,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:43,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 07:49:43,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148497582] [2020-09-25 07:49:43,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 07:49:43,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:43,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 07:49:43,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-09-25 07:49:43,287 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 22 states. [2020-09-25 07:49:43,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:43,900 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2020-09-25 07:49:43,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 07:49:43,900 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 129 [2020-09-25 07:49:43,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:43,902 INFO L225 Difference]: With dead ends: 182 [2020-09-25 07:49:43,902 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 07:49:43,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=500, Invalid=1060, Unknown=0, NotChecked=0, Total=1560 [2020-09-25 07:49:43,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 07:49:43,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2020-09-25 07:49:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-25 07:49:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2020-09-25 07:49:43,908 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 129 [2020-09-25 07:49:43,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:43,909 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2020-09-25 07:49:43,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 07:49:43,909 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2020-09-25 07:49:43,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 07:49:43,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:43,911 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:43,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 07:49:43,911 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:43,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:43,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1234849, now seen corresponding path program 10 times [2020-09-25 07:49:43,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:43,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897463210] [2020-09-25 07:49:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:43,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:45,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:45,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 07:49:45,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:45,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1511 [2020-09-25 07:49:45,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:45,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 07:49:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:49:45,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 07:49:45,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-09-25 07:49:45,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:45,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:45,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:45,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:45,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:45,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:49:45,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:45,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:45,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:45,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 07:49:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:45,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:45,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:45,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:45,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:45,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:49:45,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:45,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:45,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:45,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897463210] [2020-09-25 07:49:45,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:45,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-25 07:49:45,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890690216] [2020-09-25 07:49:45,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-25 07:49:45,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:45,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-25 07:49:45,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-09-25 07:49:45,862 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand 24 states. [2020-09-25 07:49:46,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:46,642 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2020-09-25 07:49:46,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-25 07:49:46,642 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 139 [2020-09-25 07:49:46,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:46,644 INFO L225 Difference]: With dead ends: 192 [2020-09-25 07:49:46,644 INFO L226 Difference]: Without dead ends: 162 [2020-09-25 07:49:46,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=605, Invalid=1287, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 07:49:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-25 07:49:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2020-09-25 07:49:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 07:49:46,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2020-09-25 07:49:46,655 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 139 [2020-09-25 07:49:46,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:46,656 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2020-09-25 07:49:46,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-25 07:49:46,656 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2020-09-25 07:49:46,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 07:49:46,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:46,658 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:46,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 07:49:46,658 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:46,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:46,658 INFO L82 PathProgramCache]: Analyzing trace with hash 187545991, now seen corresponding path program 11 times [2020-09-25 07:49:46,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:46,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180591348] [2020-09-25 07:49:46,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:46,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:48,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:48,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 07:49:48,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:48,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1645 [2020-09-25 07:49:48,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:48,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 07:49:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:49:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 07:49:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:48,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:48,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:48,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:48,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:48,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:48,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:49:48,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:48,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:48,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:48,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-25 07:49:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:48,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:48,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:48,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:48,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:48,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:49:48,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:48,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:48,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:49:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:48,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180591348] [2020-09-25 07:49:48,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:48,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-25 07:49:48,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717681392] [2020-09-25 07:49:48,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-25 07:49:48,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:48,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-25 07:49:48,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-09-25 07:49:48,820 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 26 states. [2020-09-25 07:49:49,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:49,633 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2020-09-25 07:49:49,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-25 07:49:49,633 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 149 [2020-09-25 07:49:49,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:49,635 INFO L225 Difference]: With dead ends: 202 [2020-09-25 07:49:49,635 INFO L226 Difference]: Without dead ends: 172 [2020-09-25 07:49:49,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=720, Invalid=1536, Unknown=0, NotChecked=0, Total=2256 [2020-09-25 07:49:49,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-25 07:49:49,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 164. [2020-09-25 07:49:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 07:49:49,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions. [2020-09-25 07:49:49,646 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 149 [2020-09-25 07:49:49,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:49,646 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 165 transitions. [2020-09-25 07:49:49,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-25 07:49:49,646 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 165 transitions. [2020-09-25 07:49:49,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 07:49:49,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:49,648 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:49,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 07:49:49,649 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:49,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1146876909, now seen corresponding path program 12 times [2020-09-25 07:49:49,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:49,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976851848] [2020-09-25 07:49:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:49,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:51,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:51,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 07:49:51,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:51,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2054 [2020-09-25 07:49:51,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:51,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:51,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 07:49:51,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:49:51,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 07:49:51,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:52,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:52,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:52,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:52,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:52,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:49:52,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:52,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:52,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:49:52,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-25 07:49:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:52,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:52,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:52,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:52,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:52,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:49:52,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:52,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:52,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:52,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:52,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:52,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:49:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:52,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976851848] [2020-09-25 07:49:52,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:52,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-09-25 07:49:52,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88430229] [2020-09-25 07:49:52,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-09-25 07:49:52,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:52,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-09-25 07:49:52,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-09-25 07:49:52,208 INFO L87 Difference]: Start difference. First operand 164 states and 165 transitions. Second operand 28 states. [2020-09-25 07:49:53,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:53,117 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2020-09-25 07:49:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-25 07:49:53,118 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 159 [2020-09-25 07:49:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:53,120 INFO L225 Difference]: With dead ends: 212 [2020-09-25 07:49:53,120 INFO L226 Difference]: Without dead ends: 182 [2020-09-25 07:49:53,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=845, Invalid=1807, Unknown=0, NotChecked=0, Total=2652 [2020-09-25 07:49:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-25 07:49:53,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 174. [2020-09-25 07:49:53,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 07:49:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2020-09-25 07:49:53,127 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 159 [2020-09-25 07:49:53,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:53,127 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2020-09-25 07:49:53,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-09-25 07:49:53,127 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2020-09-25 07:49:53,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 07:49:53,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:53,129 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:53,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 07:49:53,130 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:53,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:53,130 INFO L82 PathProgramCache]: Analyzing trace with hash 2141775571, now seen corresponding path program 13 times [2020-09-25 07:49:53,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:53,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529344871] [2020-09-25 07:49:53,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:53,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:55,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:55,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 07:49:55,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2202 [2020-09-25 07:49:55,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:55,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 07:49:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:49:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 07:49:55,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:49:55,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:55,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:55,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:55,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:55,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:55,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:49:55,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:55,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:55,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:55,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:55,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:55,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:55,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-25 07:49:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:55,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:55,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:55,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:55,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:55,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:49:55,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:55,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:55,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:55,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529344871] [2020-09-25 07:49:55,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:55,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-09-25 07:49:55,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469854317] [2020-09-25 07:49:55,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-09-25 07:49:55,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:55,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-09-25 07:49:55,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-09-25 07:49:55,926 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand 30 states. [2020-09-25 07:49:57,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:57,007 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2020-09-25 07:49:57,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 07:49:57,008 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 169 [2020-09-25 07:49:57,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:57,010 INFO L225 Difference]: With dead ends: 222 [2020-09-25 07:49:57,010 INFO L226 Difference]: Without dead ends: 192 [2020-09-25 07:49:57,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=980, Invalid=2100, Unknown=0, NotChecked=0, Total=3080 [2020-09-25 07:49:57,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-25 07:49:57,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 184. [2020-09-25 07:49:57,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-09-25 07:49:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2020-09-25 07:49:57,018 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 169 [2020-09-25 07:49:57,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:57,018 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2020-09-25 07:49:57,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-09-25 07:49:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2020-09-25 07:49:57,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 07:49:57,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:57,020 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:57,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 07:49:57,021 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:57,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:57,021 INFO L82 PathProgramCache]: Analyzing trace with hash 40366649, now seen corresponding path program 14 times [2020-09-25 07:49:57,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:57,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826428644] [2020-09-25 07:49:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:57,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:59,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:59,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 07:49:59,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:59,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2259 [2020-09-25 07:49:59,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:59,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 07:49:59,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:49:59,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 07:49:59,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:49:59,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:59,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:59,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:59,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:59,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:59,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:49:59,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:59,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:59,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:49:59,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-09-25 07:49:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:59,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:59,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:59,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:49:59,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:59,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:49:59,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:59,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:59,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:59,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:49:59,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:59,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:49:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:59,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826428644] [2020-09-25 07:49:59,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:59,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-09-25 07:49:59,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286051622] [2020-09-25 07:49:59,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-09-25 07:49:59,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:59,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-09-25 07:49:59,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2020-09-25 07:49:59,951 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand 32 states. [2020-09-25 07:50:01,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:01,020 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2020-09-25 07:50:01,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-09-25 07:50:01,020 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 179 [2020-09-25 07:50:01,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:01,022 INFO L225 Difference]: With dead ends: 232 [2020-09-25 07:50:01,023 INFO L226 Difference]: Without dead ends: 202 [2020-09-25 07:50:01,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1125, Invalid=2415, Unknown=0, NotChecked=0, Total=3540 [2020-09-25 07:50:01,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-25 07:50:01,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 194. [2020-09-25 07:50:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-25 07:50:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2020-09-25 07:50:01,030 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 179 [2020-09-25 07:50:01,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:01,031 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2020-09-25 07:50:01,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-09-25 07:50:01,031 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2020-09-25 07:50:01,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 07:50:01,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:01,033 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:01,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 07:50:01,034 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:01,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:01,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1993050593, now seen corresponding path program 15 times [2020-09-25 07:50:01,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:01,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431047839] [2020-09-25 07:50:01,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:01,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:03,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:03,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 07:50:03,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2562 [2020-09-25 07:50:03,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:03,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 07:50:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:50:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 07:50:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:04,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:04,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:04,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:04,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:04,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:50:04,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:04,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:04,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:04,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-25 07:50:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:04,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:04,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:04,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:04,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:04,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:50:04,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:04,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:50:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:04,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:04,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431047839] [2020-09-25 07:50:04,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:04,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-09-25 07:50:04,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520628347] [2020-09-25 07:50:04,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-09-25 07:50:04,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:04,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-09-25 07:50:04,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 07:50:04,300 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand 34 states. [2020-09-25 07:50:05,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:05,575 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2020-09-25 07:50:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-25 07:50:05,576 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 189 [2020-09-25 07:50:05,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:05,578 INFO L225 Difference]: With dead ends: 242 [2020-09-25 07:50:05,578 INFO L226 Difference]: Without dead ends: 212 [2020-09-25 07:50:05,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1280, Invalid=2752, Unknown=0, NotChecked=0, Total=4032 [2020-09-25 07:50:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-25 07:50:05,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 204. [2020-09-25 07:50:05,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-09-25 07:50:05,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 205 transitions. [2020-09-25 07:50:05,598 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 205 transitions. Word has length 189 [2020-09-25 07:50:05,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:05,598 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 205 transitions. [2020-09-25 07:50:05,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-09-25 07:50:05,599 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 205 transitions. [2020-09-25 07:50:05,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 07:50:05,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:05,604 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:05,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 07:50:05,605 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:05,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:05,605 INFO L82 PathProgramCache]: Analyzing trace with hash -839789947, now seen corresponding path program 16 times [2020-09-25 07:50:05,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:05,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076707445] [2020-09-25 07:50:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:05,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:08,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:08,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 07:50:08,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:08,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2853 [2020-09-25 07:50:08,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:08,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:08,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-25 07:50:08,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:50:08,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 07:50:08,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:09,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:09,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:09,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:09,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:09,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:09,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:50:09,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:09,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:09,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:09,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:09,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:09,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:09,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-25 07:50:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:09,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:09,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:09,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:09,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:09,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:50:09,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:09,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:50:09,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:09,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:09,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076707445] [2020-09-25 07:50:09,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:09,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-09-25 07:50:09,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121828914] [2020-09-25 07:50:09,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-09-25 07:50:09,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:09,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-09-25 07:50:09,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 07:50:09,276 INFO L87 Difference]: Start difference. First operand 204 states and 205 transitions. Second operand 36 states. [2020-09-25 07:50:10,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:10,574 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2020-09-25 07:50:10,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-09-25 07:50:10,576 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 199 [2020-09-25 07:50:10,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:10,578 INFO L225 Difference]: With dead ends: 252 [2020-09-25 07:50:10,578 INFO L226 Difference]: Without dead ends: 222 [2020-09-25 07:50:10,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1445, Invalid=3111, Unknown=0, NotChecked=0, Total=4556 [2020-09-25 07:50:10,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-09-25 07:50:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 214. [2020-09-25 07:50:10,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-25 07:50:10,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2020-09-25 07:50:10,601 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 199 [2020-09-25 07:50:10,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:10,602 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2020-09-25 07:50:10,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-09-25 07:50:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2020-09-25 07:50:10,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 07:50:10,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:10,606 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:10,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 07:50:10,607 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:10,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:10,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1916049557, now seen corresponding path program 17 times [2020-09-25 07:50:10,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:10,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070041466] [2020-09-25 07:50:10,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:10,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:13,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:13,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 07:50:13,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:13,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3064 [2020-09-25 07:50:13,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:13,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:13,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-25 07:50:13,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:50:13,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-25 07:50:13,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:14,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:14,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:14,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:14,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:14,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:14,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:50:14,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:14,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:14,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:14,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:14,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:14,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:14,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-09-25 07:50:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:14,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:14,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:14,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:14,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:14,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:50:14,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:14,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:14,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:14,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:50:14,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:14,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 0 proven. 1377 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:14,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070041466] [2020-09-25 07:50:14,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:14,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-09-25 07:50:14,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548785805] [2020-09-25 07:50:14,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-09-25 07:50:14,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:14,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-09-25 07:50:14,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 07:50:14,634 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand 38 states. [2020-09-25 07:50:16,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:16,174 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2020-09-25 07:50:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-09-25 07:50:16,175 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 209 [2020-09-25 07:50:16,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:16,177 INFO L225 Difference]: With dead ends: 262 [2020-09-25 07:50:16,178 INFO L226 Difference]: Without dead ends: 232 [2020-09-25 07:50:16,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1620, Invalid=3492, Unknown=0, NotChecked=0, Total=5112 [2020-09-25 07:50:16,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-09-25 07:50:16,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 224. [2020-09-25 07:50:16,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 07:50:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2020-09-25 07:50:16,186 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 209 [2020-09-25 07:50:16,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:16,187 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2020-09-25 07:50:16,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-09-25 07:50:16,187 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2020-09-25 07:50:16,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 07:50:16,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:16,189 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:16,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 07:50:16,189 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:16,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:16,189 INFO L82 PathProgramCache]: Analyzing trace with hash 255104209, now seen corresponding path program 18 times [2020-09-25 07:50:16,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:16,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151232189] [2020-09-25 07:50:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:16,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:19,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:19,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-25 07:50:19,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:19,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3694 [2020-09-25 07:50:19,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:19,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 07:50:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:50:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-25 07:50:19,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:21,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:21,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:21,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:21,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:21,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:21,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:50:21,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:21,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:21,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:21,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:21,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-09-25 07:50:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:21,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:21,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:21,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:21,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:50:21,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:21,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:21,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:21,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:50:21,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:21,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1548 backedges. 0 proven. 1548 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:21,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151232189] [2020-09-25 07:50:21,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:21,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-09-25 07:50:21,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566435202] [2020-09-25 07:50:21,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-09-25 07:50:21,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:21,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-09-25 07:50:21,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2020-09-25 07:50:21,110 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand 40 states. [2020-09-25 07:50:22,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:22,754 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2020-09-25 07:50:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-09-25 07:50:22,755 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 219 [2020-09-25 07:50:22,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:22,757 INFO L225 Difference]: With dead ends: 272 [2020-09-25 07:50:22,757 INFO L226 Difference]: Without dead ends: 242 [2020-09-25 07:50:22,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1805, Invalid=3895, Unknown=0, NotChecked=0, Total=5700 [2020-09-25 07:50:22,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-25 07:50:22,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 234. [2020-09-25 07:50:22,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-25 07:50:22,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2020-09-25 07:50:22,770 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 219 [2020-09-25 07:50:22,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:22,770 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2020-09-25 07:50:22,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-09-25 07:50:22,771 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2020-09-25 07:50:22,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 07:50:22,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:22,772 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:22,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 07:50:22,772 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:22,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:22,773 INFO L82 PathProgramCache]: Analyzing trace with hash 669563575, now seen corresponding path program 19 times [2020-09-25 07:50:22,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:22,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173670597] [2020-09-25 07:50:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:22,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking...