/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:13:43,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:13:43,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:13:43,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:13:43,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:13:43,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:13:43,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:13:43,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:13:43,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:13:43,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:13:43,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:13:43,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:13:43,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:13:43,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:13:43,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:13:43,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:13:43,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:13:43,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:13:43,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:13:43,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:13:43,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:13:43,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:13:43,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:13:43,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:13:43,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:13:43,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:13:43,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:13:43,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:13:43,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:13:43,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:13:43,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:13:43,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:13:43,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:13:43,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:13:43,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:13:43,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:13:43,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:13:43,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:13:43,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:13:43,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:13:43,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:13:43,413 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 00:13:43,450 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:13:43,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:13:43,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:13:43,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:13:43,452 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:13:43,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:13:43,453 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:13:43,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:13:43,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:13:43,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:13:43,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:13:43,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:13:43,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:13:43,455 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:13:43,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:13:43,455 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:13:43,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:13:43,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:13:43,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:13:43,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:13:43,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:13:43,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:13:43,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:13:43,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:13:43,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:13:43,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:13:43,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:13:43,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:13:43,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:13:43,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:13:43,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:13:43,796 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:13:43,799 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:13:43,801 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:13:43,801 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:13:43,802 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c [2020-10-14 00:13:43,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c24f202ed/ac00b6c00acc4f8f9264690fd0d007cd/FLAG468eac54b [2020-10-14 00:13:44,294 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:13:44,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c [2020-10-14 00:13:44,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c24f202ed/ac00b6c00acc4f8f9264690fd0d007cd/FLAG468eac54b [2020-10-14 00:13:44,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c24f202ed/ac00b6c00acc4f8f9264690fd0d007cd [2020-10-14 00:13:44,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:13:44,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:13:44,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:13:44,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:13:44,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:13:44,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:13:44" (1/1) ... [2020-10-14 00:13:44,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a529ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:44, skipping insertion in model container [2020-10-14 00:13:44,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:13:44" (1/1) ... [2020-10-14 00:13:44,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:13:44,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:13:45,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:13:45,094 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:13:45,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:13:45,239 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:13:45,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:45 WrapperNode [2020-10-14 00:13:45,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:13:45,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:13:45,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:13:45,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:13:45,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:45" (1/1) ... [2020-10-14 00:13:45,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:45" (1/1) ... [2020-10-14 00:13:45,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:45" (1/1) ... [2020-10-14 00:13:45,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:45" (1/1) ... [2020-10-14 00:13:45,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:45" (1/1) ... [2020-10-14 00:13:45,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:45" (1/1) ... [2020-10-14 00:13:45,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:45" (1/1) ... [2020-10-14 00:13:45,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:13:45,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:13:45,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:13:45,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:13:45,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:13:45,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:13:45,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:13:45,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:13:45,349 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-14 00:13:45,350 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-14 00:13:45,350 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-14 00:13:45,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:13:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:13:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 00:13:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 00:13:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:13:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-14 00:13:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-14 00:13:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-14 00:13:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:13:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:13:45,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:13:45,795 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:13:45,796 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 00:13:45,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:13:45 BoogieIcfgContainer [2020-10-14 00:13:45,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:13:45,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:13:45,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:13:45,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:13:45,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:13:44" (1/3) ... [2020-10-14 00:13:45,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539412a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:13:45, skipping insertion in model container [2020-10-14 00:13:45,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:45" (2/3) ... [2020-10-14 00:13:45,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539412a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:13:45, skipping insertion in model container [2020-10-14 00:13:45,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:13:45" (3/3) ... [2020-10-14 00:13:45,809 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2020-10-14 00:13:45,820 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:13:45,828 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:13:45,841 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:13:45,865 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:13:45,865 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:13:45,866 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:13:45,866 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:13:45,866 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:13:45,866 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:13:45,866 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:13:45,866 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:13:45,884 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-14 00:13:45,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 00:13:45,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:45,893 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:13:45,894 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:45,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:45,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1245732312, now seen corresponding path program 1 times [2020-10-14 00:13:45,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:45,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782793602] [2020-10-14 00:13:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:46,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:46,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:46,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:46,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:47,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:47,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:51,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:51,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 00:13:51,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:13:51,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 00:13:51,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:51,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:51,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:51,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 00:13:51,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:13:51,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:13:51,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:51,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:51,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:51,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:51,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:51,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:51,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:51,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:51,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:51,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:51,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:13:51,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:13:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:51,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:51,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:51,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:51,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:51,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:13:51,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:51,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:51,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:51,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:51,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:13:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:51,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:51,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:51,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:51,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:51,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:13:51,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:13:51,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:51,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:51,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:51,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:51,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:13:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:51,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:51,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:51,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:51,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:51,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:51,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:51,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:51,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:51,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:51,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:51,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:51,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:13:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:51,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:51,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:51,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:51,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:51,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:51,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:51,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:51,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:51,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:51,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:51,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:51,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 00:13:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:51,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:51,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:51,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:13:51,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:51,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:13:51,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:51,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:51,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:51,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:51,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:51,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 00:13:51,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782793602] [2020-10-14 00:13:51,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:51,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:51,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681099241] [2020-10-14 00:13:51,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:51,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:51,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:51,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:51,230 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-10-14 00:13:51,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:51,287 INFO L93 Difference]: Finished difference Result 116 states and 171 transitions. [2020-10-14 00:13:51,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:51,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-10-14 00:13:51,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:51,302 INFO L225 Difference]: With dead ends: 116 [2020-10-14 00:13:51,302 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 00:13:51,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 00:13:51,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-14 00:13:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 00:13:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2020-10-14 00:13:51,362 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 48 [2020-10-14 00:13:51,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:51,365 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2020-10-14 00:13:51,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:51,365 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2020-10-14 00:13:51,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 00:13:51,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:51,369 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:13:51,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:13:51,370 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:51,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:51,370 INFO L82 PathProgramCache]: Analyzing trace with hash 2034049724, now seen corresponding path program 1 times [2020-10-14 00:13:51,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:51,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524614500] [2020-10-14 00:13:51,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:51,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:51,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:51,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:51,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:51,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:56,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:56,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 00:13:56,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:13:56,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:13:56,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:56,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:56,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:13:56,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:13:56,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:13:56,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:56,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:56,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:56,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:56,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:56,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:56,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:56,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:56,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:56,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:13:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:56,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:56,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:56,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:56,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:56,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:56,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:56,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:56,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:56,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:56,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:56,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:13:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:56,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:56,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:56,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:56,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:13:56,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:56,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:56,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:13:56,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:13:56,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:13:56,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:56,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:13:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:56,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:56,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:56,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:56,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:56,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:56,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:56,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:13:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:56,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:13:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:56,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:56,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:56,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:56,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:56,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:13:56,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:56,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:56,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:56,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:13:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:56,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:56,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 00:13:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:56,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:56,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:56,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:13:56,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:56,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:13:56,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:56,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:56,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:56,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:13:56,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:56,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:13:56,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524614500] [2020-10-14 00:13:56,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:13:56,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 00:13:56,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419668146] [2020-10-14 00:13:56,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:13:56,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:56,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:13:56,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:13:56,550 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand 4 states. [2020-10-14 00:13:56,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:56,695 INFO L93 Difference]: Finished difference Result 120 states and 169 transitions. [2020-10-14 00:13:56,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:13:56,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-14 00:13:56,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:56,704 INFO L225 Difference]: With dead ends: 120 [2020-10-14 00:13:56,704 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 00:13:56,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:13:56,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 00:13:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 62. [2020-10-14 00:13:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 00:13:56,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 85 transitions. [2020-10-14 00:13:56,743 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 85 transitions. Word has length 50 [2020-10-14 00:13:56,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:56,744 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 85 transitions. [2020-10-14 00:13:56,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:13:56,745 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 85 transitions. [2020-10-14 00:13:56,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 00:13:56,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:56,750 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 00:13:56,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:13:56,752 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:56,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:56,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1483148473, now seen corresponding path program 1 times [2020-10-14 00:13:56,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:56,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504868450] [2020-10-14 00:13:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:56,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:56,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:56,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:57,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:57,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:00,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:00,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 00:14:00,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:14:00,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4184 [2020-10-14 00:14:00,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:00,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:00,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:14:00,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:00,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:14:00,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:00,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:00,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:00,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:00,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:00,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:00,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:00,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:00,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:00,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:00,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:00,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:00,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:00,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:00,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:00,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:00,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:00,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:00,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:00,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:00,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:00,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:01,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:14:01,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:01,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:14:01,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:01,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:14:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:01,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:14:01,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:01,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 00:14:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:01,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:01,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:01,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:01,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:14:01,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:01,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:01,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:01,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:01,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:14:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:01,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:01,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:01,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:14:01,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:01,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:01,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:01,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:01,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:01,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:01,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:14:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:01,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:01,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:01,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:01,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:14:01,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:01,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:01,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:01,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504868450] [2020-10-14 00:14:01,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:01,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 00:14:01,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362019984] [2020-10-14 00:14:01,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:14:01,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:01,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:14:01,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:14:01,103 INFO L87 Difference]: Start difference. First operand 62 states and 85 transitions. Second operand 4 states. [2020-10-14 00:14:01,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:01,219 INFO L93 Difference]: Finished difference Result 129 states and 180 transitions. [2020-10-14 00:14:01,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:14:01,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-14 00:14:01,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:01,223 INFO L225 Difference]: With dead ends: 129 [2020-10-14 00:14:01,223 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 00:14:01,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:14:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 00:14:01,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2020-10-14 00:14:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 00:14:01,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 100 transitions. [2020-10-14 00:14:01,252 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 100 transitions. Word has length 53 [2020-10-14 00:14:01,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:01,253 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 100 transitions. [2020-10-14 00:14:01,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:14:01,253 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2020-10-14 00:14:01,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 00:14:01,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:01,262 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1] [2020-10-14 00:14:01,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:14:01,262 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:01,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:01,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1244715928, now seen corresponding path program 1 times [2020-10-14 00:14:01,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:01,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643243810] [2020-10-14 00:14:01,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:01,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:03,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:03,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 00:14:03,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:14:03,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2072 [2020-10-14 00:14:03,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:03,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 00:14:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 00:14:03,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:14:03,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:03,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:03,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:03,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:03,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:03,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:03,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:03,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:03,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:03,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:03,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:14:03,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:03,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:03,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:03,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:03,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:03,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:03,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:03,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:03,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:03,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:03,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:03,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:03,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:03,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:03,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:03,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:03,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:14:03,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:03,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 00:14:03,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:03,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:03,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:03,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 00:14:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:03,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:03,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:03,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:03,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:03,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:14:03,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:03,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:03,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:03,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:03,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:14:03,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:03,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 00:14:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:03,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:03,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:03,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:03,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:14:03,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:03,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:03,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:14:03,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:03,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:14:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:03,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:03,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:03,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:03,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:03,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 00:14:03,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:03,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:03,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:03,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:03,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:14:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 00:14:03,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643243810] [2020-10-14 00:14:03,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:03,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:14:03,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536564646] [2020-10-14 00:14:03,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:14:03,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:03,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:14:03,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:03,537 INFO L87 Difference]: Start difference. First operand 72 states and 100 transitions. Second operand 6 states. [2020-10-14 00:14:03,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:03,624 INFO L93 Difference]: Finished difference Result 99 states and 141 transitions. [2020-10-14 00:14:03,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:14:03,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-14 00:14:03,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:03,628 INFO L225 Difference]: With dead ends: 99 [2020-10-14 00:14:03,628 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 00:14:03,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:14:03,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 00:14:03,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2020-10-14 00:14:03,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 00:14:03,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 132 transitions. [2020-10-14 00:14:03,664 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 132 transitions. Word has length 55 [2020-10-14 00:14:03,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:03,665 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 132 transitions. [2020-10-14 00:14:03,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:14:03,665 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 132 transitions. [2020-10-14 00:14:03,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 00:14:03,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:03,669 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1] [2020-10-14 00:14:03,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:14:03,670 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:03,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:03,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1936375484, now seen corresponding path program 1 times [2020-10-14 00:14:03,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:03,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093028760] [2020-10-14 00:14:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:03,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:03,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:03,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:04,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:04,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 00:14:04,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:14:04,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1301 [2020-10-14 00:14:04,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:04,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:14:04,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:04,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:04,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:04,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:04,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:04,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:04,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:04,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:04,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:04,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:04,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:05,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:05,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:05,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:05,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:05,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:05,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:05,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:05,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:05,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:05,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:05,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:05,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:05,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:14:05,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:05,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:14:05,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:05,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:05,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:05,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:05,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:14:05,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:05,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 00:14:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:05,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:05,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:05,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:05,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:05,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:14:05,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:05,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:05,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:05,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:05,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:05,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 00:14:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:05,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:05,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:05,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:05,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:05,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:14:05,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:05,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:05,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:05,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:05,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:14:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:05,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:05,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:05,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:05,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:05,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:14:05,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:05,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:05,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:05,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:05,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:05,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:05,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093028760] [2020-10-14 00:14:05,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:05,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:14:05,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362785914] [2020-10-14 00:14:05,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:14:05,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:05,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:14:05,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:14:05,165 INFO L87 Difference]: Start difference. First operand 91 states and 132 transitions. Second operand 5 states. [2020-10-14 00:14:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:05,287 INFO L93 Difference]: Finished difference Result 183 states and 263 transitions. [2020-10-14 00:14:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:14:05,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-14 00:14:05,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:05,290 INFO L225 Difference]: With dead ends: 183 [2020-10-14 00:14:05,290 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 00:14:05,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:05,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 00:14:05,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2020-10-14 00:14:05,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 00:14:05,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 137 transitions. [2020-10-14 00:14:05,321 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 137 transitions. Word has length 57 [2020-10-14 00:14:05,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:05,321 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 137 transitions. [2020-10-14 00:14:05,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:14:05,322 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 137 transitions. [2020-10-14 00:14:05,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 00:14:05,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:05,324 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:05,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:14:05,325 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:05,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:05,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1749935982, now seen corresponding path program 1 times [2020-10-14 00:14:05,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:05,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903267982] [2020-10-14 00:14:05,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:05,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:05,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:05,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:06,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:10,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:10,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 00:14:10,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:14:10,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4802 [2020-10-14 00:14:10,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:10,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:10,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:14:10,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:10,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:10,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:10,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:10,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:10,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:10,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:10,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:10,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:10,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:10,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:10,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:10,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:10,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:10,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:10,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:10,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:10,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:10,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:10,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:10,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:10,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:10,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 00:14:10,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:14:10,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:10,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 00:14:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:10,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 00:14:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:10,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:10,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:10,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:10,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:10,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:10,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:10,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:10,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:10,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:14:10,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 00:14:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:10,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:10,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:10,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:10,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:10,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:10,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:10,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:10,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 00:14:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:10,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:10,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:10,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:10,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:10,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:14:10,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:10,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:10,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:10,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903267982] [2020-10-14 00:14:10,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:10,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:14:10,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793690260] [2020-10-14 00:14:10,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:14:10,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:10,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:14:10,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:14:10,248 INFO L87 Difference]: Start difference. First operand 96 states and 137 transitions. Second operand 5 states. [2020-10-14 00:14:10,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:10,335 INFO L93 Difference]: Finished difference Result 197 states and 281 transitions. [2020-10-14 00:14:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:14:10,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-14 00:14:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:10,338 INFO L225 Difference]: With dead ends: 197 [2020-10-14 00:14:10,338 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 00:14:10,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:14:10,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 00:14:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 102. [2020-10-14 00:14:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-14 00:14:10,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 145 transitions. [2020-10-14 00:14:10,363 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 145 transitions. Word has length 58 [2020-10-14 00:14:10,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:10,364 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 145 transitions. [2020-10-14 00:14:10,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:14:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 145 transitions. [2020-10-14 00:14:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 00:14:10,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:10,369 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:10,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:14:10,369 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:10,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:10,370 INFO L82 PathProgramCache]: Analyzing trace with hash 77580877, now seen corresponding path program 1 times [2020-10-14 00:14:10,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:10,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823948078] [2020-10-14 00:14:10,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:10,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:10,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:11,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:11,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:14:11,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:14:11,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1536 [2020-10-14 00:14:11,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:11,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:11,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:11,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:11,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:14:11,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:11,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:11,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:11,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:11,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:11,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:11,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:11,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:11,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:11,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:11,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:11,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:11,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:11,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:11,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:11,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:11,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:11,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:11,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:11,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:11,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:14:11,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:11,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 00:14:11,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:11,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 00:14:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:12,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:14:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:12,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:12,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:12,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:12,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:12,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:12,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:12,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:12,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:12,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:14:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:12,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:12,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:12,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:12,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:12,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:12,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:12,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:12,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:12,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:12,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 00:14:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:12,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:12,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:12,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:12,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:12,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:12,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:12,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:12,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:12,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:12,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:12,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:12,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823948078] [2020-10-14 00:14:12,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:12,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:14:12,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911731366] [2020-10-14 00:14:12,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:14:12,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:12,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:14:12,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:12,093 INFO L87 Difference]: Start difference. First operand 102 states and 145 transitions. Second operand 6 states. [2020-10-14 00:14:12,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:12,223 INFO L93 Difference]: Finished difference Result 198 states and 287 transitions. [2020-10-14 00:14:12,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:14:12,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-14 00:14:12,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:12,227 INFO L225 Difference]: With dead ends: 198 [2020-10-14 00:14:12,227 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 00:14:12,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:14:12,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 00:14:12,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2020-10-14 00:14:12,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 00:14:12,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 147 transitions. [2020-10-14 00:14:12,252 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 147 transitions. Word has length 60 [2020-10-14 00:14:12,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:12,253 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 147 transitions. [2020-10-14 00:14:12,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:14:12,253 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 147 transitions. [2020-10-14 00:14:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 00:14:12,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:12,256 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-14 00:14:12,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:14:12,256 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:12,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:12,257 INFO L82 PathProgramCache]: Analyzing trace with hash -38121987, now seen corresponding path program 2 times [2020-10-14 00:14:12,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:12,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576221454] [2020-10-14 00:14:12,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:12,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:12,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:12,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:17,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 00:14:17,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:14:17,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:14:17,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:17,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 00:14:17,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:17,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:17,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:17,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:17,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:17,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:17,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:17,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:17,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:17,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:17,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:17,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:17,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:17,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:17,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:17,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:17,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:17,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:17,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:17,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:17,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:17,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:17,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 00:14:17,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:17,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:14:17,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:17,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:17,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:17,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:17,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:14:17,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:17,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 00:14:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:17,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:17,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:17,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:17,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:17,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:17,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:17,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:17,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 00:14:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:17,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:17,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:17,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:17,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:17,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:17,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:17,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:17,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:14:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:17,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:17,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:17,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:17,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:14:17,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:17,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:17,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:17,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576221454] [2020-10-14 00:14:17,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:17,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:14:17,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68485874] [2020-10-14 00:14:17,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:14:17,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:17,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:14:17,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:17,385 INFO L87 Difference]: Start difference. First operand 103 states and 147 transitions. Second operand 6 states. [2020-10-14 00:14:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:17,500 INFO L93 Difference]: Finished difference Result 214 states and 307 transitions. [2020-10-14 00:14:17,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:14:17,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-14 00:14:17,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:17,503 INFO L225 Difference]: With dead ends: 214 [2020-10-14 00:14:17,503 INFO L226 Difference]: Without dead ends: 129 [2020-10-14 00:14:17,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:14:17,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-14 00:14:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 108. [2020-10-14 00:14:17,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-14 00:14:17,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 154 transitions. [2020-10-14 00:14:17,521 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 154 transitions. Word has length 61 [2020-10-14 00:14:17,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:17,521 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 154 transitions. [2020-10-14 00:14:17,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:14:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 154 transitions. [2020-10-14 00:14:17,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 00:14:17,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:17,523 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:17,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:14:17,524 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:17,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:17,524 INFO L82 PathProgramCache]: Analyzing trace with hash -259208932, now seen corresponding path program 2 times [2020-10-14 00:14:17,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:17,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277190294] [2020-10-14 00:14:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:17,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 00:14:19,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:14:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1661 [2020-10-14 00:14:19,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:14:19,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:19,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:14:19,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:19,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:19,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:19,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:19,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:19,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:19,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:19,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:19,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:19,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:19,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:19,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:19,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:19,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:19,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:19,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:19,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:19,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:19,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 00:14:19,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:19,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 00:14:19,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:14:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:14:19,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:19,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:14:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:19,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:19,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:19,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:19,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:19,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:19,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:19,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:19,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 00:14:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:19,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:19,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:19,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:19,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:19,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:19,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:19,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:14:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:19,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:19,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:19,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:14:19,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:19,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:19,382 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:19,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277190294] [2020-10-14 00:14:19,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:19,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:14:19,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050552295] [2020-10-14 00:14:19,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:14:19,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:19,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:14:19,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:14:19,390 INFO L87 Difference]: Start difference. First operand 108 states and 154 transitions. Second operand 7 states. [2020-10-14 00:14:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:19,662 INFO L93 Difference]: Finished difference Result 228 states and 331 transitions. [2020-10-14 00:14:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:14:19,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-14 00:14:19,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:19,667 INFO L225 Difference]: With dead ends: 228 [2020-10-14 00:14:19,667 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 00:14:19,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:14:19,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 00:14:19,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 103. [2020-10-14 00:14:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 00:14:19,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 143 transitions. [2020-10-14 00:14:19,687 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 143 transitions. Word has length 63 [2020-10-14 00:14:19,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:19,688 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 143 transitions. [2020-10-14 00:14:19,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:14:19,688 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 143 transitions. [2020-10-14 00:14:19,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 00:14:19,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:19,695 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-14 00:14:19,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:14:19,696 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:19,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:19,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1888671474, now seen corresponding path program 3 times [2020-10-14 00:14:19,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:19,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716811755] [2020-10-14 00:14:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:19,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:21,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:24,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:24,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 00:14:24,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:14:24,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 00:14:24,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:24,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:14:24,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:24,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:14:24,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:24,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:24,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:24,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:24,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:24,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:24,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:24,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:24,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:24,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:24,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:24,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:24,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:24,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:24,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:24,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:24,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:24,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:24,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:24,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:24,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:24,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:24,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:14:24,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:24,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 00:14:24,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:24,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:24,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:14:24,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:24,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 00:14:24,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:24,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 00:14:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:24,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:24,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:24,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:24,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:24,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:14:24,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:24,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:24,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:24,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:14:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:24,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:24,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:24,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:24,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:24,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:14:24,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:24,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:24,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:24,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:14:24,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:14:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:24,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:24,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:24,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:24,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:24,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:24,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:24,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:24,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:24,844 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:24,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716811755] [2020-10-14 00:14:24,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:24,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:14:24,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339863395] [2020-10-14 00:14:24,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:14:24,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:24,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:14:24,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:14:24,846 INFO L87 Difference]: Start difference. First operand 103 states and 143 transitions. Second operand 7 states. [2020-10-14 00:14:24,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:24,967 INFO L93 Difference]: Finished difference Result 209 states and 299 transitions. [2020-10-14 00:14:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:14:24,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-14 00:14:24,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:24,969 INFO L225 Difference]: With dead ends: 209 [2020-10-14 00:14:24,969 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 00:14:24,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:14:24,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 00:14:24,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 107. [2020-10-14 00:14:24,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 00:14:24,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 148 transitions. [2020-10-14 00:14:24,991 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 148 transitions. Word has length 64 [2020-10-14 00:14:24,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:24,992 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 148 transitions. [2020-10-14 00:14:24,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:14:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 148 transitions. [2020-10-14 00:14:24,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 00:14:24,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:24,993 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1] [2020-10-14 00:14:24,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:14:24,994 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:24,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:24,994 INFO L82 PathProgramCache]: Analyzing trace with hash -520805395, now seen corresponding path program 3 times [2020-10-14 00:14:24,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:24,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925978043] [2020-10-14 00:14:24,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:25,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:25,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:25,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:27,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 00:14:27,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:14:27,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2000 [2020-10-14 00:14:27,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:27,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:14:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:14:27,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:27,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:27,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:27,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:27,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:27,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:27,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:27,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:27,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:27,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:27,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:27,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:27,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:27,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:27,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:27,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:27,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:27,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:27,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:27,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:27,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:27,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 00:14:27,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 00:14:27,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:27,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:14:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 00:14:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:27,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 00:14:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:27,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:27,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:27,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:27,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:27,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:27,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:27,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:14:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:27,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:27,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:27,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:27,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:27,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:27,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:27,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:27,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:27,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:27,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 00:14:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:27,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:27,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:27,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:27,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:27,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:27,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:27,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:27,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925978043] [2020-10-14 00:14:27,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:27,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:14:27,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032935371] [2020-10-14 00:14:27,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:14:27,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:27,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:14:27,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:14:27,158 INFO L87 Difference]: Start difference. First operand 107 states and 148 transitions. Second operand 8 states. [2020-10-14 00:14:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:27,482 INFO L93 Difference]: Finished difference Result 229 states and 328 transitions. [2020-10-14 00:14:27,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:14:27,483 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-10-14 00:14:27,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:27,484 INFO L225 Difference]: With dead ends: 229 [2020-10-14 00:14:27,484 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 00:14:27,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:14:27,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 00:14:27,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 109. [2020-10-14 00:14:27,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 00:14:27,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 151 transitions. [2020-10-14 00:14:27,496 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 151 transitions. Word has length 66 [2020-10-14 00:14:27,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:27,497 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 151 transitions. [2020-10-14 00:14:27,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:14:27,497 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 151 transitions. [2020-10-14 00:14:27,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 00:14:27,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:27,498 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2020-10-14 00:14:27,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:14:27,498 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:27,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:27,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1408227235, now seen corresponding path program 4 times [2020-10-14 00:14:27,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:27,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660452041] [2020-10-14 00:14:27,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:27,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:28,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:32,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:32,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 00:14:32,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:14:32,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:14:32,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:32,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:14:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:32,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 00:14:32,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:32,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:32,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:32,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:32,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:32,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:32,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:32,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:32,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:32,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:32,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:32,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:32,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:32,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:32,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:32,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:32,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:32,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:32,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:32,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:32,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:32,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:14:32,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:32,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 00:14:32,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:32,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:32,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:14:32,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:32,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 00:14:32,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:32,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:14:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:32,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:32,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:32,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:32,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:32,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:32,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:32,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:32,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:32,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 00:14:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:32,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:32,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:32,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:32,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:32,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:32,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:32,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:32,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:32,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:32,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:32,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 00:14:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:32,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:32,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:32,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:32,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:32,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:14:32,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:32,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:32,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:32,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660452041] [2020-10-14 00:14:32,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:32,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:14:32,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499726031] [2020-10-14 00:14:32,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:14:32,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:32,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:14:32,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:14:32,625 INFO L87 Difference]: Start difference. First operand 109 states and 151 transitions. Second operand 8 states. [2020-10-14 00:14:32,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:32,764 INFO L93 Difference]: Finished difference Result 225 states and 323 transitions. [2020-10-14 00:14:32,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:14:32,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-14 00:14:32,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:32,767 INFO L225 Difference]: With dead ends: 225 [2020-10-14 00:14:32,767 INFO L226 Difference]: Without dead ends: 141 [2020-10-14 00:14:32,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:14:32,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-14 00:14:32,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2020-10-14 00:14:32,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 00:14:32,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 156 transitions. [2020-10-14 00:14:32,793 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 156 transitions. Word has length 67 [2020-10-14 00:14:32,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:32,794 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 156 transitions. [2020-10-14 00:14:32,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:14:32,794 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 156 transitions. [2020-10-14 00:14:32,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 00:14:32,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:32,795 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 1] [2020-10-14 00:14:32,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:14:32,795 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:32,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:32,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1624607612, now seen corresponding path program 4 times [2020-10-14 00:14:32,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:32,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983690787] [2020-10-14 00:14:32,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:32,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:32,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:33,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:34,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:34,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:14:34,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:14:34,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1756 [2020-10-14 00:14:34,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:34,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:14:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 00:14:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:14:34,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:34,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:34,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:34,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:34,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:34,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:34,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:34,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:34,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:34,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:34,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:34,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:34,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:34,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:34,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:34,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:34,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:34,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:34,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:34,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:34,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:34,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:34,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:34,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 00:14:34,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:34,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 00:14:34,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:34,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:34,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:34,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:34,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:34,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:34,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:14:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:34,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:34,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:34,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:34,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:34,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:34,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:34,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:34,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:34,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:34,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:34,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:34,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:14:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:34,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:34,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:34,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:34,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:34,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:14:34,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:34,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:14:34,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:34,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:14:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:34,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:34,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:34,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:34,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:34,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:14:34,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:34,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:34,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:34,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:14:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-14 00:14:34,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983690787] [2020-10-14 00:14:34,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:14:34,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 00:14:34,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083259435] [2020-10-14 00:14:34,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:14:34,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:34,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:14:34,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:14:34,718 INFO L87 Difference]: Start difference. First operand 113 states and 156 transitions. Second operand 8 states. [2020-10-14 00:14:34,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:34,823 INFO L93 Difference]: Finished difference Result 167 states and 231 transitions. [2020-10-14 00:14:34,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:14:34,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-14 00:14:34,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:34,825 INFO L225 Difference]: With dead ends: 167 [2020-10-14 00:14:34,825 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 00:14:34,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:14:34,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 00:14:34,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 127. [2020-10-14 00:14:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-14 00:14:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2020-10-14 00:14:34,836 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 69 [2020-10-14 00:14:34,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:34,836 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2020-10-14 00:14:34,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:14:34,837 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2020-10-14 00:14:34,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 00:14:34,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:34,838 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 1] [2020-10-14 00:14:34,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:14:34,838 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:34,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:34,839 INFO L82 PathProgramCache]: Analyzing trace with hash 36259710, now seen corresponding path program 1 times [2020-10-14 00:14:34,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:34,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272475977] [2020-10-14 00:14:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:34,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:14:35,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:35,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-14 00:14:35,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 00:14:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:14:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:35,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:35,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:35,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:35,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:35,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:35,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:35,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:35,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:35,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:35,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:35,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:35,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:35,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:35,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 00:14:35,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:35,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 00:14:35,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:35,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:35,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:35,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:35,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:14:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:35,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:35,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:35,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:35,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:35,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:35,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:35,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:14:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:35,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:35,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:35,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:35,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:35,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:35,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:14:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:35,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:35,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:35,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:35,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 00:14:35,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272475977] [2020-10-14 00:14:35,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:14:35,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:14:35,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55627785] [2020-10-14 00:14:35,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:14:35,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:35,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:14:35,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:35,271 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand 6 states. [2020-10-14 00:14:35,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:35,313 INFO L93 Difference]: Finished difference Result 133 states and 179 transitions. [2020-10-14 00:14:35,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:14:35,313 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-14 00:14:35,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:35,315 INFO L225 Difference]: With dead ends: 133 [2020-10-14 00:14:35,315 INFO L226 Difference]: Without dead ends: 127 [2020-10-14 00:14:35,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:14:35,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-14 00:14:35,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-10-14 00:14:35,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-14 00:14:35,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 173 transitions. [2020-10-14 00:14:35,324 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 173 transitions. Word has length 69 [2020-10-14 00:14:35,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:35,325 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 173 transitions. [2020-10-14 00:14:35,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:14:35,325 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 173 transitions. [2020-10-14 00:14:35,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 00:14:35,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:35,326 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 1] [2020-10-14 00:14:35,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:14:35,327 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:35,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:35,327 INFO L82 PathProgramCache]: Analyzing trace with hash -20998592, now seen corresponding path program 1 times [2020-10-14 00:14:35,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:35,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660483859] [2020-10-14 00:14:35,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:14:35,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:35,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-14 00:14:35,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:35,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 00:14:35,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:14:35,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:35,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:35,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:35,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:35,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:35,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:35,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:35,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:35,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:35,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:35,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 00:14:35,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:35,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 00:14:35,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:35,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:35,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:35,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:14:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:35,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:35,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:35,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:35,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:35,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:14:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:35,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:35,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:35,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:35,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:35,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:35,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:35,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:14:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:35,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:35,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:14:35,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:35,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:35,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:14:35,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 00:14:35,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660483859] [2020-10-14 00:14:35,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:14:35,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:14:35,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489432778] [2020-10-14 00:14:35,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:14:35,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:35,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:14:35,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:35,769 INFO L87 Difference]: Start difference. First operand 127 states and 173 transitions. Second operand 6 states. [2020-10-14 00:14:35,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:35,810 INFO L93 Difference]: Finished difference Result 150 states and 199 transitions. [2020-10-14 00:14:35,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:14:35,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-14 00:14:35,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:35,811 INFO L225 Difference]: With dead ends: 150 [2020-10-14 00:14:35,812 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 00:14:35,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:14:35,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 00:14:35,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-14 00:14:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-14 00:14:35,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 173 transitions. [2020-10-14 00:14:35,821 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 173 transitions. Word has length 69 [2020-10-14 00:14:35,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:35,821 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 173 transitions. [2020-10-14 00:14:35,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:14:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 173 transitions. [2020-10-14 00:14:35,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 00:14:35,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:35,823 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:35,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:14:35,823 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:35,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1012977781, now seen corresponding path program 1 times [2020-10-14 00:14:35,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:35,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345412069] [2020-10-14 00:14:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 00:14:35,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:35,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 00:14:35,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:14:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:14:35,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:35,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:35,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:35,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:35,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:35,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:35,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:35,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:35,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:35,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:35,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:35,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:35,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:35,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:36,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:36,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 00:14:36,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:36,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 00:14:36,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:36,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:36,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:14:36,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:36,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 00:14:36,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:36,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:14:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:36,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:36,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:36,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:36,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:36,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:36,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:36,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:36,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:36,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:36,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:36,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:36,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 00:14:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:36,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:36,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:36,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:36,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:36,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:36,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:36,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:36,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:36,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:36,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:36,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:36,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:14:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:36,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:36,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:36,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:36,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:36,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:36,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:36,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:36,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:36,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345412069] [2020-10-14 00:14:36,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:36,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:14:36,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575433534] [2020-10-14 00:14:36,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:14:36,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:36,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:14:36,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:14:36,168 INFO L87 Difference]: Start difference. First operand 131 states and 173 transitions. Second operand 9 states. [2020-10-14 00:14:36,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:36,455 INFO L93 Difference]: Finished difference Result 259 states and 351 transitions. [2020-10-14 00:14:36,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:14:36,456 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-14 00:14:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:36,457 INFO L225 Difference]: With dead ends: 259 [2020-10-14 00:14:36,458 INFO L226 Difference]: Without dead ends: 160 [2020-10-14 00:14:36,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:14:36,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-14 00:14:36,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 132. [2020-10-14 00:14:36,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-14 00:14:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 175 transitions. [2020-10-14 00:14:36,471 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 175 transitions. Word has length 71 [2020-10-14 00:14:36,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:36,471 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 175 transitions. [2020-10-14 00:14:36,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:14:36,471 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 175 transitions. [2020-10-14 00:14:36,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 00:14:36,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:36,473 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:36,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:14:36,473 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:36,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:36,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1306087997, now seen corresponding path program 1 times [2020-10-14 00:14:36,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:36,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209197612] [2020-10-14 00:14:36,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:36,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:36,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:36,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 00:14:36,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:36,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 00:14:36,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:36,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:14:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 00:14:36,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:36,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:36,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:36,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:36,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:36,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:36,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:36,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:36,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:36,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:36,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:36,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:36,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:36,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:36,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:36,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:36,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:36,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:36,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:36,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:36,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:14:36,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:36,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 00:14:36,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:36,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:14:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:14:36,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:36,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 00:14:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:36,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:36,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:36,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:36,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:36,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:36,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:36,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:36,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:36,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:36,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:36,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:36,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 00:14:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:36,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:36,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:36,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:36,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:36,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:36,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:36,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:36,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:36,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 00:14:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:36,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:36,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:36,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:36,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:36,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:36,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:36,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:36,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:36,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:36,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:36,725 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:36,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209197612] [2020-10-14 00:14:36,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:36,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:14:36,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075367208] [2020-10-14 00:14:36,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:14:36,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:36,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:14:36,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:14:36,728 INFO L87 Difference]: Start difference. First operand 132 states and 175 transitions. Second operand 9 states. [2020-10-14 00:14:36,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:36,924 INFO L93 Difference]: Finished difference Result 281 states and 381 transitions. [2020-10-14 00:14:36,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:14:36,924 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-14 00:14:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:36,927 INFO L225 Difference]: With dead ends: 281 [2020-10-14 00:14:36,927 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 00:14:36,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:14:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 00:14:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 137. [2020-10-14 00:14:36,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 00:14:36,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 182 transitions. [2020-10-14 00:14:36,943 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 182 transitions. Word has length 72 [2020-10-14 00:14:36,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:36,944 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 182 transitions. [2020-10-14 00:14:36,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:14:36,944 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 182 transitions. [2020-10-14 00:14:36,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 00:14:36,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:36,946 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:36,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:14:36,947 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:36,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:36,947 INFO L82 PathProgramCache]: Analyzing trace with hash -420730532, now seen corresponding path program 2 times [2020-10-14 00:14:36,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:36,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969863254] [2020-10-14 00:14:36,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:36,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:37,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:37,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 00:14:37,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:37,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 00:14:37,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:37,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:37,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:14:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 00:14:37,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:37,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:37,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:37,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:37,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:37,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:37,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:37,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:37,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:37,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:37,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:37,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:37,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:37,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:37,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:37,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:37,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:37,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:37,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:37,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:37,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:37,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:37,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:37,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:37,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:37,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 00:14:37,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:37,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 00:14:37,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:37,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:37,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:14:37,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:37,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:14:37,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:37,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 00:14:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:37,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:37,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:37,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:37,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:37,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:37,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:37,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:37,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:14:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:37,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:37,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:37,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:37,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:37,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:37,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:37,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:37,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:37,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 00:14:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:37,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:37,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:37,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:37,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:37,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:37,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:37,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:37,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:37,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:37,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:37,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:37,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969863254] [2020-10-14 00:14:37,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:37,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:14:37,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241790415] [2020-10-14 00:14:37,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:14:37,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:37,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:14:37,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:14:37,286 INFO L87 Difference]: Start difference. First operand 137 states and 182 transitions. Second operand 10 states. [2020-10-14 00:14:37,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:37,860 INFO L93 Difference]: Finished difference Result 292 states and 396 transitions. [2020-10-14 00:14:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 00:14:37,861 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-10-14 00:14:37,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:37,864 INFO L225 Difference]: With dead ends: 292 [2020-10-14 00:14:37,864 INFO L226 Difference]: Without dead ends: 183 [2020-10-14 00:14:37,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:14:37,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-14 00:14:37,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 139. [2020-10-14 00:14:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 00:14:37,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 184 transitions. [2020-10-14 00:14:37,880 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 184 transitions. Word has length 74 [2020-10-14 00:14:37,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:37,880 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 184 transitions. [2020-10-14 00:14:37,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:14:37,881 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 184 transitions. [2020-10-14 00:14:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 00:14:37,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:37,882 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:37,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:14:37,883 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:37,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:37,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1809083764, now seen corresponding path program 2 times [2020-10-14 00:14:37,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:37,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509971001] [2020-10-14 00:14:37,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:37,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 00:14:38,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 00:14:38,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:14:38,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:38,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:14:38,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:38,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:38,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:38,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:38,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:38,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:38,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 00:14:38,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 00:14:38,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:14:38,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:38,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 00:14:38,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:38,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:14:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:38,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:14:38,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:38,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 00:14:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:38,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:38,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:38,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:14:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:38,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:38,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:38,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:38,286 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:38,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509971001] [2020-10-14 00:14:38,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:38,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:14:38,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803252168] [2020-10-14 00:14:38,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:14:38,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:38,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:14:38,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:14:38,288 INFO L87 Difference]: Start difference. First operand 139 states and 184 transitions. Second operand 10 states. [2020-10-14 00:14:38,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:38,549 INFO L93 Difference]: Finished difference Result 293 states and 399 transitions. [2020-10-14 00:14:38,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 00:14:38,550 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-10-14 00:14:38,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:38,552 INFO L225 Difference]: With dead ends: 293 [2020-10-14 00:14:38,552 INFO L226 Difference]: Without dead ends: 185 [2020-10-14 00:14:38,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:14:38,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-14 00:14:38,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 143. [2020-10-14 00:14:38,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 00:14:38,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 189 transitions. [2020-10-14 00:14:38,569 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 189 transitions. Word has length 75 [2020-10-14 00:14:38,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:38,569 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 189 transitions. [2020-10-14 00:14:38,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:14:38,570 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 189 transitions. [2020-10-14 00:14:38,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 00:14:38,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:38,572 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:38,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:14:38,573 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:38,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:38,573 INFO L82 PathProgramCache]: Analyzing trace with hash -508587541, now seen corresponding path program 3 times [2020-10-14 00:14:38,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:38,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840046882] [2020-10-14 00:14:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 00:14:38,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-14 00:14:38,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:14:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 00:14:38,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:38,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:38,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:38,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:38,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:38,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:38,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:38,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:38,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:14:38,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 00:14:38,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:14:38,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:38,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:14:38,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:39,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:14:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:39,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:39,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:39,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:39,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:14:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:39,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:39,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:39,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:39,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:39,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:39,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 00:14:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:39,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:39,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:39,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 4 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:39,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840046882] [2020-10-14 00:14:39,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:39,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:14:39,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573030457] [2020-10-14 00:14:39,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:14:39,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:39,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:14:39,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:14:39,142 INFO L87 Difference]: Start difference. First operand 143 states and 189 transitions. Second operand 11 states. [2020-10-14 00:14:39,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:39,724 INFO L93 Difference]: Finished difference Result 304 states and 412 transitions. [2020-10-14 00:14:39,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 00:14:39,725 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2020-10-14 00:14:39,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:39,726 INFO L225 Difference]: With dead ends: 304 [2020-10-14 00:14:39,726 INFO L226 Difference]: Without dead ends: 193 [2020-10-14 00:14:39,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:14:39,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-14 00:14:39,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 145. [2020-10-14 00:14:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 00:14:39,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 192 transitions. [2020-10-14 00:14:39,740 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 192 transitions. Word has length 77 [2020-10-14 00:14:39,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:39,740 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 192 transitions. [2020-10-14 00:14:39,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:14:39,740 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 192 transitions. [2020-10-14 00:14:39,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 00:14:39,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:39,742 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:39,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 00:14:39,742 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:39,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:39,743 INFO L82 PathProgramCache]: Analyzing trace with hash -237683747, now seen corresponding path program 3 times [2020-10-14 00:14:39,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:39,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080438561] [2020-10-14 00:14:39,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 00:14:39,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 00:14:39,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:14:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 00:14:39,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:39,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:39,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:39,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:39,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:39,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:39,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:39,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:39,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:39,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:39,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:39,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:39,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 00:14:39,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 00:14:39,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:14:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 00:14:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:14:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:40,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:40,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:40,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:14:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:40,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:40,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 00:14:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:40,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:40,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 4 proven. 86 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:40,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080438561] [2020-10-14 00:14:40,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:40,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:14:40,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959619141] [2020-10-14 00:14:40,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:14:40,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:40,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:14:40,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:14:40,054 INFO L87 Difference]: Start difference. First operand 145 states and 192 transitions. Second operand 11 states. [2020-10-14 00:14:40,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:40,209 INFO L93 Difference]: Finished difference Result 300 states and 412 transitions. [2020-10-14 00:14:40,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:14:40,210 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-10-14 00:14:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:40,213 INFO L225 Difference]: With dead ends: 300 [2020-10-14 00:14:40,213 INFO L226 Difference]: Without dead ends: 189 [2020-10-14 00:14:40,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=67, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:14:40,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-14 00:14:40,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 149. [2020-10-14 00:14:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-14 00:14:40,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 197 transitions. [2020-10-14 00:14:40,231 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 197 transitions. Word has length 78 [2020-10-14 00:14:40,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:40,231 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 197 transitions. [2020-10-14 00:14:40,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:14:40,232 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 197 transitions. [2020-10-14 00:14:40,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 00:14:40,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:40,234 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:40,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 00:14:40,234 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:40,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:40,234 INFO L82 PathProgramCache]: Analyzing trace with hash 2073307900, now seen corresponding path program 4 times [2020-10-14 00:14:40,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:40,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537431239] [2020-10-14 00:14:40,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 00:14:40,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 00:14:40,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:14:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 00:14:40,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:40,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:40,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:40,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:40,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:40,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:40,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:14:40,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 00:14:40,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:14:40,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:40,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 00:14:40,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:40,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:14:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:40,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:40,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:40,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:14:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:40,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:40,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:40,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:14:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:40,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:40,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:40,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 4 proven. 93 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:40,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537431239] [2020-10-14 00:14:40,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:40,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:14:40,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371011931] [2020-10-14 00:14:40,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:14:40,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:40,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:14:40,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:14:40,760 INFO L87 Difference]: Start difference. First operand 149 states and 197 transitions. Second operand 12 states. [2020-10-14 00:14:41,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:41,482 INFO L93 Difference]: Finished difference Result 317 states and 430 transitions. [2020-10-14 00:14:41,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 00:14:41,483 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-14 00:14:41,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:41,487 INFO L225 Difference]: With dead ends: 317 [2020-10-14 00:14:41,488 INFO L226 Difference]: Without dead ends: 203 [2020-10-14 00:14:41,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:14:41,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-14 00:14:41,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 151. [2020-10-14 00:14:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 00:14:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 200 transitions. [2020-10-14 00:14:41,516 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 200 transitions. Word has length 80 [2020-10-14 00:14:41,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:41,517 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 200 transitions. [2020-10-14 00:14:41,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:14:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 200 transitions. [2020-10-14 00:14:41,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 00:14:41,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:41,519 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:41,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 00:14:41,519 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:41,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:41,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1803303700, now seen corresponding path program 4 times [2020-10-14 00:14:41,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:41,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446102559] [2020-10-14 00:14:41,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 00:14:41,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:41,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 00:14:41,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:14:41,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:41,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 00:14:41,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:41,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:41,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:41,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:41,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:41,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:41,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:41,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:41,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:41,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:41,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:41,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 00:14:41,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:41,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 00:14:41,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:14:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 00:14:41,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:41,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:14:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:41,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:41,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:41,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:41,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:41,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 00:14:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:41,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:41,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:41,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:41,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:41,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:41,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 00:14:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:41,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:41,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:41,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:41,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:41,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:41,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:41,853 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 4 proven. 109 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:41,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446102559] [2020-10-14 00:14:41,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:41,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:14:41,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206325817] [2020-10-14 00:14:41,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:14:41,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:41,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:14:41,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=67, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:14:41,855 INFO L87 Difference]: Start difference. First operand 151 states and 200 transitions. Second operand 12 states. [2020-10-14 00:14:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:41,969 INFO L93 Difference]: Finished difference Result 313 states and 431 transitions. [2020-10-14 00:14:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:14:41,970 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 81 [2020-10-14 00:14:41,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:41,971 INFO L225 Difference]: With dead ends: 313 [2020-10-14 00:14:41,972 INFO L226 Difference]: Without dead ends: 199 [2020-10-14 00:14:41,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=79, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:14:41,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-14 00:14:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 155. [2020-10-14 00:14:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-14 00:14:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 205 transitions. [2020-10-14 00:14:41,986 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 205 transitions. Word has length 81 [2020-10-14 00:14:41,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:41,987 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 205 transitions. [2020-10-14 00:14:41,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:14:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 205 transitions. [2020-10-14 00:14:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 00:14:41,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:41,988 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:41,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 00:14:41,989 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:41,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:41,989 INFO L82 PathProgramCache]: Analyzing trace with hash 751086667, now seen corresponding path program 5 times [2020-10-14 00:14:41,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:41,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359324033] [2020-10-14 00:14:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 00:14:42,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 00:14:42,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:14:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 00:14:42,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:42,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:42,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:42,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:42,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:42,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:14:42,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 00:14:42,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:14:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 00:14:42,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 00:14:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:42,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:42,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 00:14:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:42,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:42,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:42,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:42,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:14:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:42,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:42,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 4 proven. 117 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:42,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359324033] [2020-10-14 00:14:42,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:42,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:14:42,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830792941] [2020-10-14 00:14:42,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:14:42,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:42,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:14:42,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:14:42,447 INFO L87 Difference]: Start difference. First operand 155 states and 205 transitions. Second operand 13 states. [2020-10-14 00:14:43,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:43,385 INFO L93 Difference]: Finished difference Result 330 states and 448 transitions. [2020-10-14 00:14:43,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 00:14:43,385 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2020-10-14 00:14:43,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:43,387 INFO L225 Difference]: With dead ends: 330 [2020-10-14 00:14:43,388 INFO L226 Difference]: Without dead ends: 213 [2020-10-14 00:14:43,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:14:43,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-14 00:14:43,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 157. [2020-10-14 00:14:43,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 00:14:43,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 208 transitions. [2020-10-14 00:14:43,410 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 208 transitions. Word has length 83 [2020-10-14 00:14:43,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:43,412 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 208 transitions. [2020-10-14 00:14:43,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:14:43,413 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 208 transitions. [2020-10-14 00:14:43,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 00:14:43,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:43,422 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:43,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 00:14:43,423 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:43,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:43,423 INFO L82 PathProgramCache]: Analyzing trace with hash 157511037, now seen corresponding path program 5 times [2020-10-14 00:14:43,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:43,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365340044] [2020-10-14 00:14:43,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:43,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:43,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:43,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 00:14:43,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:43,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 00:14:43,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:43,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:14:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 00:14:43,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:43,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:43,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:43,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:43,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:43,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:43,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:43,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:43,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:43,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:43,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:43,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:43,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:43,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:43,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:43,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:43,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:43,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:43,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:43,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:43,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:43,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:43,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:43,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:43,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:43,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:43,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:43,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 00:14:43,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:43,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 00:14:43,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:43,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:43,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:14:43,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:43,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 00:14:43,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:43,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 00:14:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:43,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:43,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:43,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:43,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:43,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:43,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:43,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:43,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 00:14:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:43,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:43,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:43,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:43,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:43,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:43,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:43,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:43,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:43,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 00:14:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:43,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:43,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:43,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:43,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:43,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:43,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:43,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:43,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 4 proven. 135 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:43,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365340044] [2020-10-14 00:14:43,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:43,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:14:43,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240771114] [2020-10-14 00:14:43,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:14:43,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:43,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:14:43,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:14:43,770 INFO L87 Difference]: Start difference. First operand 157 states and 208 transitions. Second operand 13 states. [2020-10-14 00:14:44,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:44,042 INFO L93 Difference]: Finished difference Result 341 states and 468 transitions. [2020-10-14 00:14:44,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 00:14:44,044 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2020-10-14 00:14:44,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:44,047 INFO L225 Difference]: With dead ends: 341 [2020-10-14 00:14:44,047 INFO L226 Difference]: Without dead ends: 224 [2020-10-14 00:14:44,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:14:44,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-14 00:14:44,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 161. [2020-10-14 00:14:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 00:14:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 213 transitions. [2020-10-14 00:14:44,065 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 213 transitions. Word has length 84 [2020-10-14 00:14:44,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:44,065 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 213 transitions. [2020-10-14 00:14:44,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:14:44,066 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 213 transitions. [2020-10-14 00:14:44,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 00:14:44,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:44,068 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:44,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 00:14:44,068 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:44,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:44,069 INFO L82 PathProgramCache]: Analyzing trace with hash -396594020, now seen corresponding path program 6 times [2020-10-14 00:14:44,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:44,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820240638] [2020-10-14 00:14:44,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:44,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:44,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:44,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 00:14:44,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:44,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 00:14:44,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:44,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:14:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:14:44,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:44,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:44,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:44,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:44,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:44,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:44,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:44,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:44,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:44,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:44,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:44,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:44,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:44,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:44,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:44,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:44,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:44,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:44,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:44,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:44,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:44,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:44,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:44,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:44,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:44,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:44,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:44,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:44,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 00:14:44,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:44,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 00:14:44,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:44,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:14:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:14:44,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:44,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 00:14:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:44,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:44,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:44,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:44,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:44,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:44,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:44,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:44,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:14:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:44,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:44,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:44,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:44,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:44,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:44,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:44,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:44,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 00:14:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:44,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:44,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:44,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:44,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:44,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:44,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:44,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:44,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 4 proven. 144 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:44,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820240638] [2020-10-14 00:14:44,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:44,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:14:44,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052812988] [2020-10-14 00:14:44,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:14:44,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:44,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:14:44,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:14:44,658 INFO L87 Difference]: Start difference. First operand 161 states and 213 transitions. Second operand 14 states. [2020-10-14 00:14:45,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:45,660 INFO L93 Difference]: Finished difference Result 343 states and 466 transitions. [2020-10-14 00:14:45,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:14:45,661 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2020-10-14 00:14:45,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:45,665 INFO L225 Difference]: With dead ends: 343 [2020-10-14 00:14:45,665 INFO L226 Difference]: Without dead ends: 223 [2020-10-14 00:14:45,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:14:45,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-14 00:14:45,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 163. [2020-10-14 00:14:45,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-14 00:14:45,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 216 transitions. [2020-10-14 00:14:45,697 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 216 transitions. Word has length 86 [2020-10-14 00:14:45,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:45,697 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 216 transitions. [2020-10-14 00:14:45,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:14:45,698 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 216 transitions. [2020-10-14 00:14:45,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 00:14:45,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:45,700 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:45,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 00:14:45,700 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:45,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:45,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1060851892, now seen corresponding path program 6 times [2020-10-14 00:14:45,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:45,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178506694] [2020-10-14 00:14:45,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:45,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:45,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:45,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 00:14:45,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:45,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 00:14:45,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:45,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:14:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 00:14:45,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:45,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:45,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:45,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:45,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:45,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:45,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:45,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:45,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:45,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:45,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:45,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:45,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:45,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:45,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:45,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:45,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:45,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:45,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:45,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:45,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:45,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:45,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:45,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:45,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:45,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 00:14:45,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 00:14:45,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:45,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:14:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 00:14:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:46,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 00:14:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:46,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:46,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:46,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:46,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:46,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:46,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:46,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:46,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:14:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:46,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:46,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:46,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:46,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:46,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:46,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:46,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:46,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:46,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:46,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:46,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:46,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:14:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:46,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:46,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:46,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:46,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:46,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:46,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:46,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:46,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:46,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178506694] [2020-10-14 00:14:46,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:46,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:14:46,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489455506] [2020-10-14 00:14:46,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:14:46,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:46,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:14:46,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:14:46,101 INFO L87 Difference]: Start difference. First operand 163 states and 216 transitions. Second operand 14 states. [2020-10-14 00:14:46,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:46,389 INFO L93 Difference]: Finished difference Result 357 states and 491 transitions. [2020-10-14 00:14:46,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 00:14:46,390 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-10-14 00:14:46,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:46,392 INFO L225 Difference]: With dead ends: 357 [2020-10-14 00:14:46,392 INFO L226 Difference]: Without dead ends: 237 [2020-10-14 00:14:46,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:14:46,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-14 00:14:46,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 167. [2020-10-14 00:14:46,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-14 00:14:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 221 transitions. [2020-10-14 00:14:46,411 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 221 transitions. Word has length 87 [2020-10-14 00:14:46,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:46,411 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 221 transitions. [2020-10-14 00:14:46,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:14:46,411 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 221 transitions. [2020-10-14 00:14:46,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 00:14:46,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:46,413 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:46,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 00:14:46,413 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:46,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:46,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1282703019, now seen corresponding path program 7 times [2020-10-14 00:14:46,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:46,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66892948] [2020-10-14 00:14:46,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:46,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:46,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:46,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 00:14:46,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:46,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-14 00:14:46,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:46,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:46,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:14:46,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:46,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 00:14:46,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:46,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:46,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:46,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:46,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:46,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:46,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:46,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:46,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:46,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:46,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:46,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:46,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:46,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:46,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:46,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:46,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:46,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:46,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 00:14:46,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:46,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 00:14:46,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:46,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:46,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:14:46,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:46,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 00:14:46,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:47,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:14:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:47,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:47,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:47,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:47,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:47,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:47,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:47,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:47,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:47,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 00:14:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:47,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:47,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:47,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:47,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:47,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:47,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:47,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:47,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:47,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:47,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:47,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:47,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:14:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:47,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:47,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:47,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:47,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:47,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:47,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:47,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:47,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:47,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:47,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:47,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:47,029 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 174 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:47,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66892948] [2020-10-14 00:14:47,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:47,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:14:47,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525063705] [2020-10-14 00:14:47,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:14:47,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:47,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:14:47,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:14:47,031 INFO L87 Difference]: Start difference. First operand 167 states and 221 transitions. Second operand 15 states. [2020-10-14 00:14:48,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:48,227 INFO L93 Difference]: Finished difference Result 356 states and 484 transitions. [2020-10-14 00:14:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 00:14:48,235 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-10-14 00:14:48,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:48,239 INFO L225 Difference]: With dead ends: 356 [2020-10-14 00:14:48,239 INFO L226 Difference]: Without dead ends: 233 [2020-10-14 00:14:48,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:14:48,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-14 00:14:48,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 169. [2020-10-14 00:14:48,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 00:14:48,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 224 transitions. [2020-10-14 00:14:48,265 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 224 transitions. Word has length 89 [2020-10-14 00:14:48,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:48,265 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 224 transitions. [2020-10-14 00:14:48,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:14:48,266 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 224 transitions. [2020-10-14 00:14:48,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 00:14:48,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:48,267 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:48,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 00:14:48,268 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:48,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:48,268 INFO L82 PathProgramCache]: Analyzing trace with hash -542251235, now seen corresponding path program 7 times [2020-10-14 00:14:48,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:48,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058832688] [2020-10-14 00:14:48,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:48,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:48,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:48,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 00:14:48,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:48,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 00:14:48,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:48,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:14:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 00:14:48,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 00:14:48,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:48,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:48,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:48,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:48,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:48,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:48,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:48,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:48,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:48,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:48,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:48,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:48,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:48,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:48,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:48,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:48,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:48,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:48,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:48,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:48,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:48,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:14:48,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:48,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 00:14:48,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:48,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:14:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 00:14:48,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:48,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 00:14:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:48,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:48,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:48,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:48,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:48,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:48,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:48,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:48,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:48,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:48,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:48,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:14:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:48,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:48,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:48,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:48,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:48,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:48,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:48,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:48,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:48,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:48,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:48,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:48,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 00:14:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:48,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:48,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:48,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:48,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:48,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:48,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:48,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:48,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 4 proven. 196 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:48,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058832688] [2020-10-14 00:14:48,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:48,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:14:48,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866633086] [2020-10-14 00:14:48,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:14:48,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:48,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:14:48,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:14:48,733 INFO L87 Difference]: Start difference. First operand 169 states and 224 transitions. Second operand 15 states. [2020-10-14 00:14:49,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:49,048 INFO L93 Difference]: Finished difference Result 373 states and 514 transitions. [2020-10-14 00:14:49,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 00:14:49,049 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 90 [2020-10-14 00:14:49,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:49,051 INFO L225 Difference]: With dead ends: 373 [2020-10-14 00:14:49,052 INFO L226 Difference]: Without dead ends: 250 [2020-10-14 00:14:49,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:14:49,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-14 00:14:49,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 173. [2020-10-14 00:14:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 00:14:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 229 transitions. [2020-10-14 00:14:49,070 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 229 transitions. Word has length 90 [2020-10-14 00:14:49,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:49,071 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 229 transitions. [2020-10-14 00:14:49,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:14:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 229 transitions. [2020-10-14 00:14:49,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 00:14:49,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:49,073 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:49,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 00:14:49,073 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:49,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:49,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1441728060, now seen corresponding path program 8 times [2020-10-14 00:14:49,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:49,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622649883] [2020-10-14 00:14:49,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:49,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:49,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:49,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 00:14:49,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 00:14:49,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:49,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 00:14:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 00:14:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:49,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:49,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:49,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:49,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:49,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:49,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:49,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:49,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:49,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:49,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:49,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:49,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:49,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:49,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:49,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:49,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:49,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:49,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:49,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:49,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:49,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:49,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:49,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:49,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:49,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 00:14:49,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 00:14:49,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:49,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 00:14:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 00:14:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:49,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 00:14:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:49,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:49,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:49,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:49,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:49,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:49,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:49,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:49,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:49,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:49,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:49,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 00:14:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:49,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:49,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:49,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:49,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:49,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:49,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:49,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:49,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:49,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 00:14:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:49,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:49,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:49,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:49,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:49,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:49,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:49,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:49,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 4 proven. 207 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:49,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622649883] [2020-10-14 00:14:49,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:49,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 00:14:49,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591487912] [2020-10-14 00:14:49,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 00:14:49,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:49,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 00:14:49,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:14:49,687 INFO L87 Difference]: Start difference. First operand 173 states and 229 transitions. Second operand 16 states. [2020-10-14 00:14:51,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:51,080 INFO L93 Difference]: Finished difference Result 369 states and 502 transitions. [2020-10-14 00:14:51,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 00:14:51,081 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 92 [2020-10-14 00:14:51,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:51,083 INFO L225 Difference]: With dead ends: 369 [2020-10-14 00:14:51,083 INFO L226 Difference]: Without dead ends: 243 [2020-10-14 00:14:51,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2020-10-14 00:14:51,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-14 00:14:51,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 175. [2020-10-14 00:14:51,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-14 00:14:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 232 transitions. [2020-10-14 00:14:51,101 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 232 transitions. Word has length 92 [2020-10-14 00:14:51,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:51,101 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 232 transitions. [2020-10-14 00:14:51,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 00:14:51,102 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 232 transitions. [2020-10-14 00:14:51,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 00:14:51,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:51,103 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:51,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 00:14:51,103 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:51,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:51,103 INFO L82 PathProgramCache]: Analyzing trace with hash 92557740, now seen corresponding path program 8 times [2020-10-14 00:14:51,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:51,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566632811] [2020-10-14 00:14:51,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:51,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:51,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:51,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 00:14:51,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:51,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 00:14:51,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:51,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:51,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 00:14:51,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:51,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 00:14:51,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:51,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:51,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:51,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:51,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:51,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:51,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:51,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:51,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:51,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:51,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:51,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:51,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:51,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:51,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:51,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:51,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:51,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:51,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:51,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:51,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:51,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:51,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:51,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:51,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:51,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:51,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 00:14:51,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:51,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 00:14:51,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:51,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 00:14:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 00:14:51,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:51,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:14:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:51,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:51,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:51,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:51,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:51,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:51,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:51,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:51,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:51,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:51,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:51,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:51,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 00:14:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:51,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:51,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:51,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:51,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:51,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:51,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:51,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:51,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 00:14:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:51,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:51,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:51,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:51,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:51,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:51,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:51,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:51,602 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 4 proven. 231 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:51,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566632811] [2020-10-14 00:14:51,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:51,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 00:14:51,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100381980] [2020-10-14 00:14:51,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 00:14:51,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:51,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 00:14:51,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=121, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:14:51,604 INFO L87 Difference]: Start difference. First operand 175 states and 232 transitions. Second operand 16 states. [2020-10-14 00:14:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:51,792 INFO L93 Difference]: Finished difference Result 365 states and 507 transitions. [2020-10-14 00:14:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 00:14:51,794 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 93 [2020-10-14 00:14:51,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:51,797 INFO L225 Difference]: With dead ends: 365 [2020-10-14 00:14:51,797 INFO L226 Difference]: Without dead ends: 239 [2020-10-14 00:14:51,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=137, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:14:51,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-14 00:14:51,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 179. [2020-10-14 00:14:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-14 00:14:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2020-10-14 00:14:51,816 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 93 [2020-10-14 00:14:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:51,816 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2020-10-14 00:14:51,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 00:14:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2020-10-14 00:14:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 00:14:51,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:51,818 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:51,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 00:14:51,818 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:51,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:51,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1607797003, now seen corresponding path program 9 times [2020-10-14 00:14:51,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:51,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753448529] [2020-10-14 00:14:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:51,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:52,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:52,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:14:52,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-14 00:14:52,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:52,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:14:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 00:14:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:52,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:52,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:52,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:52,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:52,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:52,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:52,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:52,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:52,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:52,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:52,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:52,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:52,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:52,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:52,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:52,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:52,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:52,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:52,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:52,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:52,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:52,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:52,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:52,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:52,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:52,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:52,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 00:14:52,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:52,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 00:14:52,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:52,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:52,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:14:52,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:52,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:14:52,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:52,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 00:14:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:52,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:52,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:52,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:52,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:52,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:52,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:52,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:52,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:52,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:52,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:52,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:52,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 00:14:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:52,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:52,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:52,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:52,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:52,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:52,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:52,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:52,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:52,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:14:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:52,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:52,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:52,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:52,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:52,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:52,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:52,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:52,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:52,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:52,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:52,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 4 proven. 243 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:52,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753448529] [2020-10-14 00:14:52,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:52,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 00:14:52,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930106750] [2020-10-14 00:14:52,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 00:14:52,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:52,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 00:14:52,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:14:52,665 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand 17 states. [2020-10-14 00:14:53,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:53,283 INFO L93 Difference]: Finished difference Result 355 states and 487 transitions. [2020-10-14 00:14:53,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 00:14:53,284 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 95 [2020-10-14 00:14:53,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:53,286 INFO L225 Difference]: With dead ends: 355 [2020-10-14 00:14:53,286 INFO L226 Difference]: Without dead ends: 232 [2020-10-14 00:14:53,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:14:53,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-14 00:14:53,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 180. [2020-10-14 00:14:53,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-14 00:14:53,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 239 transitions. [2020-10-14 00:14:53,325 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 239 transitions. Word has length 95 [2020-10-14 00:14:53,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:53,326 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 239 transitions. [2020-10-14 00:14:53,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 00:14:53,326 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 239 transitions. [2020-10-14 00:14:53,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 00:14:53,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:53,328 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:53,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 00:14:53,328 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:53,329 INFO L82 PathProgramCache]: Analyzing trace with hash 945727677, now seen corresponding path program 9 times [2020-10-14 00:14:53,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:53,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275552553] [2020-10-14 00:14:53,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:53,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 00:14:53,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:53,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 00:14:53,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:53,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:14:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 00:14:53,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:53,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:53,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:53,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:53,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:53,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:53,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:53,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:53,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:53,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:53,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:53,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:53,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:53,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:53,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:53,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:53,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 00:14:53,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:53,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 00:14:53,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:53,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:53,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:14:53,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:53,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 00:14:53,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:53,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 00:14:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:53,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:53,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:53,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:53,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:53,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:53,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:53,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:53,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:53,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:53,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:53,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:14:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:53,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:53,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:53,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:53,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:53,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:53,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:53,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:53,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 00:14:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:53,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:53,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:53,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:53,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:53,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:53,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:53,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:53,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:53,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:53,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 269 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:53,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275552553] [2020-10-14 00:14:53,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:53,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 00:14:53,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442186273] [2020-10-14 00:14:53,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 00:14:53,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:53,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 00:14:53,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:14:53,898 INFO L87 Difference]: Start difference. First operand 180 states and 239 transitions. Second operand 17 states. [2020-10-14 00:14:54,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:54,352 INFO L93 Difference]: Finished difference Result 409 states and 565 transitions. [2020-10-14 00:14:54,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 00:14:54,357 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 96 [2020-10-14 00:14:54,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:54,359 INFO L225 Difference]: With dead ends: 409 [2020-10-14 00:14:54,359 INFO L226 Difference]: Without dead ends: 280 [2020-10-14 00:14:54,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:14:54,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-14 00:14:54,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 185. [2020-10-14 00:14:54,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-14 00:14:54,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 246 transitions. [2020-10-14 00:14:54,385 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 246 transitions. Word has length 96 [2020-10-14 00:14:54,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:54,386 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 246 transitions. [2020-10-14 00:14:54,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 00:14:54,386 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 246 transitions. [2020-10-14 00:14:54,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 00:14:54,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:54,387 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:54,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 00:14:54,388 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:54,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:54,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1165352924, now seen corresponding path program 10 times [2020-10-14 00:14:54,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:54,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810020497] [2020-10-14 00:14:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:54,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:54,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:54,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 00:14:54,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:54,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-14 00:14:54,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:54,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:14:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 00:14:54,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:54,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:54,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:54,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:54,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:54,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:54,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:54,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:54,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:54,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:54,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:54,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:54,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:54,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:54,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:54,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:54,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:54,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:54,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:54,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:54,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:54,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:54,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:54,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 00:14:54,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:54,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 00:14:54,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:54,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:54,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:14:54,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:54,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 00:14:54,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:55,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:14:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:55,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:55,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:55,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:55,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:55,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:55,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:55,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:55,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:55,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:55,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:14:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:55,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:55,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:55,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:55,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:55,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:55,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:55,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:55,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:55,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:55,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:55,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:55,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:14:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:55,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:55,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:55,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:55,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:55,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:55,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:55,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:55,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:55,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:55,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:55,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 4 proven. 282 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:55,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810020497] [2020-10-14 00:14:55,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:55,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:14:55,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901525467] [2020-10-14 00:14:55,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:14:55,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:55,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:14:55,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:14:55,284 INFO L87 Difference]: Start difference. First operand 185 states and 246 transitions. Second operand 18 states. [2020-10-14 00:14:56,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:56,974 INFO L93 Difference]: Finished difference Result 396 states and 540 transitions. [2020-10-14 00:14:56,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 00:14:56,975 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 98 [2020-10-14 00:14:56,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:56,977 INFO L225 Difference]: With dead ends: 396 [2020-10-14 00:14:56,978 INFO L226 Difference]: Without dead ends: 263 [2020-10-14 00:14:56,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 00:14:56,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-14 00:14:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 187. [2020-10-14 00:14:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-14 00:14:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 248 transitions. [2020-10-14 00:14:57,012 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 248 transitions. Word has length 98 [2020-10-14 00:14:57,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:57,012 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 248 transitions. [2020-10-14 00:14:57,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:14:57,012 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 248 transitions. [2020-10-14 00:14:57,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 00:14:57,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:57,014 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:57,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 00:14:57,014 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:57,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:57,014 INFO L82 PathProgramCache]: Analyzing trace with hash 114863116, now seen corresponding path program 10 times [2020-10-14 00:14:57,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:57,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119069946] [2020-10-14 00:14:57,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:57,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:57,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:57,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 00:14:57,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:57,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-14 00:14:57,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:57,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:14:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:57,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 00:14:57,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:57,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:57,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:57,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:57,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:57,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:57,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:57,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:57,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:57,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:57,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:57,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:57,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:57,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:57,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:57,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:57,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:57,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:57,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:57,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:57,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:57,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:57,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:57,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:57,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:57,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 00:14:57,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:57,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 00:14:57,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:57,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:14:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 00:14:57,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:57,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 00:14:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:57,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:57,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:57,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:57,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:57,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:57,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:57,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:57,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:57,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 00:14:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:57,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:57,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:57,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:57,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:57,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:57,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:57,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:14:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:57,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:57,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:57,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:57,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:57,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:57,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:57,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:57,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 4 proven. 310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:57,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119069946] [2020-10-14 00:14:57,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:57,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:14:57,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850149175] [2020-10-14 00:14:57,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:14:57,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:57,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:14:57,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=154, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:14:57,741 INFO L87 Difference]: Start difference. First operand 187 states and 248 transitions. Second operand 18 states. [2020-10-14 00:14:57,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:57,971 INFO L93 Difference]: Finished difference Result 391 states and 545 transitions. [2020-10-14 00:14:57,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 00:14:57,972 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 99 [2020-10-14 00:14:57,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:57,975 INFO L225 Difference]: With dead ends: 391 [2020-10-14 00:14:57,975 INFO L226 Difference]: Without dead ends: 259 [2020-10-14 00:14:57,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=172, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:14:57,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-14 00:14:57,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 191. [2020-10-14 00:14:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-14 00:14:57,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 253 transitions. [2020-10-14 00:14:57,997 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 253 transitions. Word has length 99 [2020-10-14 00:14:58,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:58,001 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 253 transitions. [2020-10-14 00:14:58,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:14:58,001 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 253 transitions. [2020-10-14 00:14:58,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 00:14:58,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:58,002 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:58,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 00:14:58,003 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:58,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:58,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1568426859, now seen corresponding path program 11 times [2020-10-14 00:14:58,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:58,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197198100] [2020-10-14 00:14:58,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:58,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:58,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:58,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 00:14:58,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:58,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-14 00:14:58,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:58,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:58,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 00:14:58,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:58,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 00:14:58,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:14:58,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:58,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:58,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:58,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:58,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:58,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:58,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:58,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:58,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:58,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:58,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:58,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:58,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:58,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:58,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:58,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:58,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:58,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:58,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:58,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:58,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 00:14:58,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 00:14:58,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:58,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 00:14:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 00:14:58,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:59,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:14:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:59,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:59,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:59,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:59,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:59,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:59,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:59,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:59,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:59,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:14:59,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:59,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:59,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 00:14:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:59,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:59,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:59,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:59,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:59,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:59,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:59,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:59,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:59,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:59,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:59,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 00:14:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:59,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:59,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:59,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:59,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:59,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:59,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:59,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:59,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:59,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 4 proven. 324 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:59,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197198100] [2020-10-14 00:14:59,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:59,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 00:14:59,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945992700] [2020-10-14 00:14:59,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 00:14:59,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:59,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 00:14:59,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:14:59,369 INFO L87 Difference]: Start difference. First operand 191 states and 253 transitions. Second operand 19 states. [2020-10-14 00:15:00,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:00,788 INFO L93 Difference]: Finished difference Result 408 states and 556 transitions. [2020-10-14 00:15:00,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 00:15:00,789 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 101 [2020-10-14 00:15:00,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:00,792 INFO L225 Difference]: With dead ends: 408 [2020-10-14 00:15:00,792 INFO L226 Difference]: Without dead ends: 273 [2020-10-14 00:15:00,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 00:15:00,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-14 00:15:00,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 193. [2020-10-14 00:15:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-14 00:15:00,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 256 transitions. [2020-10-14 00:15:00,814 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 256 transitions. Word has length 101 [2020-10-14 00:15:00,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:00,814 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 256 transitions. [2020-10-14 00:15:00,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 00:15:00,814 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 256 transitions. [2020-10-14 00:15:00,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 00:15:00,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:00,816 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:00,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 00:15:00,816 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:00,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:00,816 INFO L82 PathProgramCache]: Analyzing trace with hash -274746787, now seen corresponding path program 11 times [2020-10-14 00:15:00,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:00,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813467757] [2020-10-14 00:15:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:00,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:01,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:01,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:15:01,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:01,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 00:15:01,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:01,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:01,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 00:15:01,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:01,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 00:15:01,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:01,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:01,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:01,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:01,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:01,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:01,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:01,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:01,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:01,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:01,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:01,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:01,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:01,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:01,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:01,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:01,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:01,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:01,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:01,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:01,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:01,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:01,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:01,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:01,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 00:15:01,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:01,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 00:15:01,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:01,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 00:15:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 00:15:01,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:01,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 00:15:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:01,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:01,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:01,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:01,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:01,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:15:01,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:01,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:01,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:01,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:15:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:01,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:01,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:01,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:01,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:01,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:01,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:01,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:01,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:01,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 00:15:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:01,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:01,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:01,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:01,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:01,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:01,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:01,523 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 4 proven. 354 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:01,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813467757] [2020-10-14 00:15:01,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:01,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 00:15:01,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693536508] [2020-10-14 00:15:01,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 00:15:01,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:01,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 00:15:01,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=172, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:15:01,525 INFO L87 Difference]: Start difference. First operand 193 states and 256 transitions. Second operand 19 states. [2020-10-14 00:15:01,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:01,770 INFO L93 Difference]: Finished difference Result 404 states and 564 transitions. [2020-10-14 00:15:01,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 00:15:01,770 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 102 [2020-10-14 00:15:01,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:01,772 INFO L225 Difference]: With dead ends: 404 [2020-10-14 00:15:01,772 INFO L226 Difference]: Without dead ends: 269 [2020-10-14 00:15:01,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=191, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:15:01,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-14 00:15:01,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 197. [2020-10-14 00:15:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-14 00:15:01,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 261 transitions. [2020-10-14 00:15:01,800 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 261 transitions. Word has length 102 [2020-10-14 00:15:01,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:01,801 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 261 transitions. [2020-10-14 00:15:01,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 00:15:01,801 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 261 transitions. [2020-10-14 00:15:01,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 00:15:01,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:01,803 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:01,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 00:15:01,803 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:01,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:01,804 INFO L82 PathProgramCache]: Analyzing trace with hash 815464828, now seen corresponding path program 12 times [2020-10-14 00:15:01,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:01,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73824959] [2020-10-14 00:15:01,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:01,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:02,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:02,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 00:15:02,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:02,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-14 00:15:02,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:02,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:02,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 00:15:02,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:02,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 00:15:02,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:02,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:02,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:02,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:02,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:02,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:02,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:02,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:02,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:02,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:02,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:02,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:02,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:02,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:02,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:02,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:02,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:02,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:02,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:02,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:02,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:02,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:02,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:02,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:02,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:02,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 00:15:02,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:02,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-14 00:15:02,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:02,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:02,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 00:15:02,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:02,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 00:15:02,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:02,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 00:15:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:02,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:02,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:02,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:02,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:02,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:02,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:02,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:02,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:02,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:15:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:02,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:02,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:02,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:02,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:02,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:02,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:02,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:02,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:02,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:02,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 00:15:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:02,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:02,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:02,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:02,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:02,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:02,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:02,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:02,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:02,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:02,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:02,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 4 proven. 369 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:02,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73824959] [2020-10-14 00:15:02,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:02,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 00:15:02,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230163386] [2020-10-14 00:15:02,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 00:15:02,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:02,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 00:15:02,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:15:02,979 INFO L87 Difference]: Start difference. First operand 197 states and 261 transitions. Second operand 20 states. [2020-10-14 00:15:05,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:05,194 INFO L93 Difference]: Finished difference Result 421 states and 574 transitions. [2020-10-14 00:15:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 00:15:05,196 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2020-10-14 00:15:05,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:05,199 INFO L225 Difference]: With dead ends: 421 [2020-10-14 00:15:05,200 INFO L226 Difference]: Without dead ends: 283 [2020-10-14 00:15:05,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 00:15:05,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-14 00:15:05,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 199. [2020-10-14 00:15:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-14 00:15:05,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 264 transitions. [2020-10-14 00:15:05,222 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 264 transitions. Word has length 104 [2020-10-14 00:15:05,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:05,223 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 264 transitions. [2020-10-14 00:15:05,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 00:15:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 264 transitions. [2020-10-14 00:15:05,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 00:15:05,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:05,224 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:05,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 00:15:05,225 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:05,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:05,225 INFO L82 PathProgramCache]: Analyzing trace with hash -2141733268, now seen corresponding path program 12 times [2020-10-14 00:15:05,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:05,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891928670] [2020-10-14 00:15:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:05,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:05,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:05,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 00:15:05,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-14 00:15:05,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:05,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 00:15:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 00:15:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:05,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:05,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:05,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:05,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:05,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:05,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:05,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:05,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:05,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:05,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:05,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:05,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:05,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:05,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:05,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:05,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:05,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:05,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:05,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:05,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:05,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:05,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:05,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 00:15:05,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:05,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 00:15:05,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:05,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:05,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 00:15:05,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:05,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 00:15:05,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:05,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:15:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:06,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:06,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:06,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:15:06,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:06,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:06,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:06,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:06,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:06,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:15:06,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:15:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:06,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:06,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:06,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:06,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:06,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:15:06,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:06,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:15:06,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 00:15:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:06,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:06,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:06,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:06,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:06,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:15:06,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:06,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:06,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:06,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:06,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:06,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:15:06,036 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 4 proven. 401 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:06,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891928670] [2020-10-14 00:15:06,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:06,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 00:15:06,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298581274] [2020-10-14 00:15:06,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 00:15:06,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:06,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 00:15:06,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:15:06,038 INFO L87 Difference]: Start difference. First operand 199 states and 264 transitions. Second operand 20 states. [2020-10-14 00:15:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:06,686 INFO L93 Difference]: Finished difference Result 453 states and 629 transitions. [2020-10-14 00:15:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 00:15:06,687 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 105 [2020-10-14 00:15:06,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:06,690 INFO L225 Difference]: With dead ends: 453 [2020-10-14 00:15:06,690 INFO L226 Difference]: Without dead ends: 315 [2020-10-14 00:15:06,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 00:15:06,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-14 00:15:06,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 203. [2020-10-14 00:15:06,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-14 00:15:06,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 269 transitions. [2020-10-14 00:15:06,715 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 269 transitions. Word has length 105 [2020-10-14 00:15:06,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:06,715 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 269 transitions. [2020-10-14 00:15:06,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 00:15:06,716 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 269 transitions. [2020-10-14 00:15:06,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 00:15:06,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:06,717 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:06,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 00:15:06,718 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:06,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:06,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1937786315, now seen corresponding path program 13 times [2020-10-14 00:15:06,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:06,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159510566] [2020-10-14 00:15:06,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:07,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:07,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 00:15:07,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:07,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-14 00:15:07,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:07,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 00:15:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 00:15:07,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:07,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:07,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:07,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:07,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:07,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:07,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:07,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:07,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:07,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:07,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:07,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:07,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:07,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:07,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:07,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:07,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:07,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:07,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:07,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:07,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:07,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:07,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 00:15:07,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:07,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-14 00:15:07,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:07,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:07,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 00:15:07,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:07,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 00:15:07,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:07,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:15:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:07,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:07,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:07,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:07,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:07,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:07,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:07,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:07,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:07,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 00:15:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:07,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:07,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:07,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:07,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:07,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:07,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:07,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:07,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:07,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:07,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:07,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:07,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:15:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:07,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:07,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:07,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:07,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:07,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:15:07,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:07,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:07,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:07,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:07,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:07,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 4 proven. 417 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:07,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159510566] [2020-10-14 00:15:07,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:07,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 00:15:07,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139685105] [2020-10-14 00:15:07,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 00:15:07,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:07,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 00:15:07,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:15:07,926 INFO L87 Difference]: Start difference. First operand 203 states and 269 transitions. Second operand 21 states. [2020-10-14 00:15:09,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:09,864 INFO L93 Difference]: Finished difference Result 434 states and 592 transitions. [2020-10-14 00:15:09,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 00:15:09,864 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 107 [2020-10-14 00:15:09,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:09,866 INFO L225 Difference]: With dead ends: 434 [2020-10-14 00:15:09,866 INFO L226 Difference]: Without dead ends: 293 [2020-10-14 00:15:09,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=162, Invalid=1320, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 00:15:09,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-14 00:15:09,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 205. [2020-10-14 00:15:09,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-14 00:15:09,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 272 transitions. [2020-10-14 00:15:09,888 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 272 transitions. Word has length 107 [2020-10-14 00:15:09,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:09,889 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 272 transitions. [2020-10-14 00:15:09,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 00:15:09,889 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 272 transitions. [2020-10-14 00:15:09,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 00:15:09,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:09,890 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:09,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 00:15:09,891 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:09,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:09,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1709505539, now seen corresponding path program 13 times [2020-10-14 00:15:09,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:09,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351588139] [2020-10-14 00:15:09,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:09,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:10,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:10,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 00:15:10,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:10,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-14 00:15:10,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:10,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 00:15:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 00:15:10,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:10,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:10,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:10,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:10,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:10,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:10,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:10,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:10,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:10,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:10,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:10,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:10,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:10,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:10,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:10,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:10,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:10,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:10,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:10,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:10,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:15:10,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:10,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 00:15:10,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:10,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 00:15:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 00:15:10,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:10,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 00:15:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:10,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:10,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:10,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:10,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:10,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:10,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:10,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:10,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:10,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:10,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:10,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:10,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 00:15:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:10,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:10,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:10,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:10,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:10,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:10,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:10,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:10,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 00:15:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:10,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:10,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:10,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:10,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:10,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:10,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:10,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:10,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 4 proven. 451 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:10,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351588139] [2020-10-14 00:15:10,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:10,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 00:15:10,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932593232] [2020-10-14 00:15:10,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 00:15:10,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:10,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 00:15:10,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:15:10,746 INFO L87 Difference]: Start difference. First operand 205 states and 272 transitions. Second operand 21 states. [2020-10-14 00:15:11,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:11,491 INFO L93 Difference]: Finished difference Result 469 states and 652 transitions. [2020-10-14 00:15:11,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 00:15:11,493 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 108 [2020-10-14 00:15:11,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:11,495 INFO L225 Difference]: With dead ends: 469 [2020-10-14 00:15:11,495 INFO L226 Difference]: Without dead ends: 328 [2020-10-14 00:15:11,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 00:15:11,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-14 00:15:11,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 209. [2020-10-14 00:15:11,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-14 00:15:11,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 277 transitions. [2020-10-14 00:15:11,523 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 277 transitions. Word has length 108 [2020-10-14 00:15:11,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:11,524 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 277 transitions. [2020-10-14 00:15:11,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 00:15:11,524 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 277 transitions. [2020-10-14 00:15:11,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 00:15:11,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:11,525 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:11,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 00:15:11,526 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:11,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:11,526 INFO L82 PathProgramCache]: Analyzing trace with hash 696806172, now seen corresponding path program 14 times [2020-10-14 00:15:11,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:11,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321045284] [2020-10-14 00:15:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:11,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:12,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:12,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 00:15:12,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:12,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-14 00:15:12,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:12,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:12,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 00:15:12,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:12,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 00:15:12,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:12,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:12,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:12,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:12,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:12,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:12,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:12,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:12,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:12,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:12,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:12,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:12,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:12,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:12,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:12,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:12,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:12,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:12,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:12,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:12,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:12,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:12,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:12,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:12,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 00:15:12,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:12,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 00:15:12,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:12,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 00:15:12,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:12,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 00:15:12,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:13,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 00:15:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:13,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:13,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:13,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:13,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:13,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:15:13,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:13,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:13,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:13,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:13,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:13,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:15:13,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:15:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:13,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:13,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:13,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:13,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:13,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:15:13,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:13,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:13,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:15:13,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 00:15:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:13,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:13,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:13,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:13,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:13,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:15:13,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:13,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:13,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:13,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:13,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:13,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:15:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 4 proven. 468 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:13,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321045284] [2020-10-14 00:15:13,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:13,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 00:15:13,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867632783] [2020-10-14 00:15:13,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 00:15:13,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:13,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 00:15:13,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:15:13,284 INFO L87 Difference]: Start difference. First operand 209 states and 277 transitions. Second operand 22 states. [2020-10-14 00:15:15,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:15,947 INFO L93 Difference]: Finished difference Result 447 states and 610 transitions. [2020-10-14 00:15:15,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 00:15:15,948 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 110 [2020-10-14 00:15:15,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:15,950 INFO L225 Difference]: With dead ends: 447 [2020-10-14 00:15:15,950 INFO L226 Difference]: Without dead ends: 303 [2020-10-14 00:15:15,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 00:15:15,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-14 00:15:15,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 211. [2020-10-14 00:15:15,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-14 00:15:15,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 280 transitions. [2020-10-14 00:15:15,976 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 280 transitions. Word has length 110 [2020-10-14 00:15:15,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:15,976 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 280 transitions. [2020-10-14 00:15:15,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 00:15:15,976 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 280 transitions. [2020-10-14 00:15:15,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 00:15:15,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:15,978 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:15,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 00:15:15,978 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:15,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:15,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1525184308, now seen corresponding path program 14 times [2020-10-14 00:15:15,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:15,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439652258] [2020-10-14 00:15:15,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:16,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:16,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:16,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 00:15:16,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:16,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-14 00:15:16,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:16,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 00:15:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 00:15:16,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:16,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:16,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:16,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:16,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:16,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:16,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:16,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:16,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:16,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:16,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:16,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:16,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:16,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:16,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:16,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:16,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:16,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:16,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:16,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:16,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:16,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:16,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:16,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 00:15:16,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:16,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 00:15:16,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:16,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 00:15:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 00:15:16,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:17,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 00:15:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:17,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:17,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:17,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:17,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:17,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:17,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:17,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:17,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:17,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 00:15:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:17,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:17,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:17,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:17,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:17,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:17,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:17,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:17,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:17,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:17,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:17,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:17,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:15:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:17,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:17,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:17,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:17,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:17,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:17,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:17,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:17,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 4 proven. 504 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:17,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439652258] [2020-10-14 00:15:17,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:17,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 00:15:17,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034201898] [2020-10-14 00:15:17,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 00:15:17,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:17,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 00:15:17,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=232, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:15:17,211 INFO L87 Difference]: Start difference. First operand 211 states and 280 transitions. Second operand 22 states. [2020-10-14 00:15:17,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:17,433 INFO L93 Difference]: Finished difference Result 443 states and 621 transitions. [2020-10-14 00:15:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 00:15:17,434 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 111 [2020-10-14 00:15:17,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:17,436 INFO L225 Difference]: With dead ends: 443 [2020-10-14 00:15:17,436 INFO L226 Difference]: Without dead ends: 299 [2020-10-14 00:15:17,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=254, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:15:17,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-14 00:15:17,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 215. [2020-10-14 00:15:17,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-14 00:15:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 285 transitions. [2020-10-14 00:15:17,464 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 285 transitions. Word has length 111 [2020-10-14 00:15:17,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:17,464 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 285 transitions. [2020-10-14 00:15:17,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 00:15:17,464 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 285 transitions. [2020-10-14 00:15:17,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 00:15:17,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:17,466 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:17,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 00:15:17,466 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:17,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:17,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1735850027, now seen corresponding path program 15 times [2020-10-14 00:15:17,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:17,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836839845] [2020-10-14 00:15:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:17,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:18,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:18,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 00:15:18,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:18,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-10-14 00:15:18,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:18,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 00:15:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 00:15:18,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:18,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:18,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:18,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:18,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:18,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:18,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:18,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:18,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:18,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:18,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:18,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:18,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:18,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:18,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:18,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:18,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:18,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:18,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:18,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:18,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:18,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:18,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:18,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:18,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 00:15:18,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 00:15:18,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:18,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 00:15:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 00:15:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:19,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:15:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:19,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:19,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:19,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:19,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:19,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:15:19,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:19,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:19,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:15:19,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 00:15:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:19,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:19,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:19,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:19,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:19,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:15:19,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:19,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:19,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:19,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:19,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:19,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:15:19,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 00:15:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:19,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:19,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:19,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:19,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:19,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:15:19,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:19,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:19,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:15:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 4 proven. 522 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:19,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836839845] [2020-10-14 00:15:19,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:19,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 00:15:19,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220791408] [2020-10-14 00:15:19,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 00:15:19,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:19,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 00:15:19,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:15:19,216 INFO L87 Difference]: Start difference. First operand 215 states and 285 transitions. Second operand 23 states. [2020-10-14 00:15:21,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:21,865 INFO L93 Difference]: Finished difference Result 460 states and 628 transitions. [2020-10-14 00:15:21,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 00:15:21,866 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 113 [2020-10-14 00:15:21,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:21,868 INFO L225 Difference]: With dead ends: 460 [2020-10-14 00:15:21,868 INFO L226 Difference]: Without dead ends: 313 [2020-10-14 00:15:21,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 00:15:21,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-14 00:15:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 217. [2020-10-14 00:15:21,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-14 00:15:21,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 288 transitions. [2020-10-14 00:15:21,893 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 288 transitions. Word has length 113 [2020-10-14 00:15:21,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:21,894 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 288 transitions. [2020-10-14 00:15:21,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 00:15:21,894 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 288 transitions. [2020-10-14 00:15:21,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 00:15:21,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:21,895 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:21,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 00:15:21,895 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:21,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:21,896 INFO L82 PathProgramCache]: Analyzing trace with hash 620404125, now seen corresponding path program 15 times [2020-10-14 00:15:21,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:21,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815959079] [2020-10-14 00:15:21,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:21,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:22,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:22,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 00:15:22,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:22,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-14 00:15:22,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:22,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 00:15:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 00:15:22,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:22,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:22,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:22,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:22,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:22,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:22,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:22,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:22,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:22,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:22,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:22,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:22,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:22,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:22,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:22,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:22,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:22,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:22,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:22,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:22,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:22,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:22,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:22,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:22,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:22,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 00:15:22,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 00:15:22,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:22,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 00:15:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 00:15:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:22,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 00:15:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:22,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:22,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:22,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:22,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:22,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:22,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:22,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:22,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:22,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:22,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:22,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:22,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:15:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:22,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:22,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:22,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:22,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:22,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:22,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:22,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:22,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 00:15:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:22,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:22,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:22,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:22,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:22,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:22,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:22,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:22,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:22,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:22,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:22,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:22,974 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 4 proven. 560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:22,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815959079] [2020-10-14 00:15:22,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:22,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 00:15:22,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103085218] [2020-10-14 00:15:22,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 00:15:22,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:22,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 00:15:22,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:15:22,976 INFO L87 Difference]: Start difference. First operand 217 states and 288 transitions. Second operand 23 states. [2020-10-14 00:15:23,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:23,961 INFO L93 Difference]: Finished difference Result 501 states and 698 transitions. [2020-10-14 00:15:23,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 00:15:23,962 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 114 [2020-10-14 00:15:23,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:23,964 INFO L225 Difference]: With dead ends: 501 [2020-10-14 00:15:23,965 INFO L226 Difference]: Without dead ends: 354 [2020-10-14 00:15:23,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 00:15:23,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-14 00:15:23,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 221. [2020-10-14 00:15:23,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-14 00:15:23,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 293 transitions. [2020-10-14 00:15:23,995 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 293 transitions. Word has length 114 [2020-10-14 00:15:23,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:23,996 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 293 transitions. [2020-10-14 00:15:23,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 00:15:23,996 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 293 transitions. [2020-10-14 00:15:23,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 00:15:23,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:23,998 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:23,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 00:15:23,998 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:23,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:23,998 INFO L82 PathProgramCache]: Analyzing trace with hash 2062032060, now seen corresponding path program 16 times [2020-10-14 00:15:23,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:23,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822565967] [2020-10-14 00:15:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:24,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:24,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:24,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 00:15:24,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:24,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-10-14 00:15:24,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:24,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:15:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 00:15:24,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:24,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:24,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:24,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:24,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:24,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:24,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:24,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:24,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:24,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:24,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:24,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:24,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:24,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:24,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:24,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:24,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:24,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:24,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:24,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:24,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:24,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:24,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:25,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:25,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 00:15:25,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:25,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-14 00:15:25,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:25,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:15:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 00:15:25,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:25,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:15:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:25,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:25,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:25,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:25,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:25,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:25,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:25,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:15:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:25,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:25,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:25,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:25,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:25,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:25,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:25,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:25,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:15:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:25,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:25,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:25,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:25,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:25,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:25,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:25,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:25,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:25,630 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 4 proven. 579 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:25,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822565967] [2020-10-14 00:15:25,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:25,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 00:15:25,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420499148] [2020-10-14 00:15:25,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 00:15:25,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:25,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 00:15:25,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:15:25,632 INFO L87 Difference]: Start difference. First operand 221 states and 293 transitions. Second operand 24 states. [2020-10-14 00:15:26,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:26,727 INFO L93 Difference]: Finished difference Result 439 states and 606 transitions. [2020-10-14 00:15:26,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:15:26,728 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 116 [2020-10-14 00:15:26,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:26,731 INFO L225 Difference]: With dead ends: 439 [2020-10-14 00:15:26,731 INFO L226 Difference]: Without dead ends: 295 [2020-10-14 00:15:26,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:15:26,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-14 00:15:26,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 222. [2020-10-14 00:15:26,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-14 00:15:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 295 transitions. [2020-10-14 00:15:26,761 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 295 transitions. Word has length 116 [2020-10-14 00:15:26,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:26,761 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 295 transitions. [2020-10-14 00:15:26,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 00:15:26,761 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 295 transitions. [2020-10-14 00:15:26,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 00:15:26,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:26,763 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:26,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 00:15:26,763 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:26,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:26,764 INFO L82 PathProgramCache]: Analyzing trace with hash 2142112556, now seen corresponding path program 16 times [2020-10-14 00:15:26,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:26,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910604474] [2020-10-14 00:15:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:26,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:27,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:27,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 00:15:27,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:27,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-14 00:15:27,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:27,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:15:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 00:15:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:27,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:27,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:27,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:27,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:27,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:27,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:27,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:27,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:27,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:27,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:27,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:27,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:27,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:27,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:27,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:27,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:27,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:27,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:27,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:27,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:27,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:27,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:27,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:27,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:27,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:27,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:27,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:27,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 00:15:27,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:27,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 00:15:27,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:27,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:15:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 00:15:27,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:27,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:15:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:27,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:27,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:27,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:27,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:27,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:15:27,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:27,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:27,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:27,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:27,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:27,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:27,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 00:15:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:27,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:28,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:28,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:28,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:28,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:28,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:28,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:28,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:28,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 00:15:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:28,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:28,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:28,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:28,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:28,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:15:28,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:28,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:28,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 4 proven. 619 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:28,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910604474] [2020-10-14 00:15:28,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:28,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 00:15:28,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571488513] [2020-10-14 00:15:28,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 00:15:28,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:28,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 00:15:28,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:15:28,026 INFO L87 Difference]: Start difference. First operand 222 states and 295 transitions. Second operand 24 states. [2020-10-14 00:15:29,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:29,079 INFO L93 Difference]: Finished difference Result 521 states and 726 transitions. [2020-10-14 00:15:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 00:15:29,080 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 117 [2020-10-14 00:15:29,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:29,084 INFO L225 Difference]: With dead ends: 521 [2020-10-14 00:15:29,084 INFO L226 Difference]: Without dead ends: 371 [2020-10-14 00:15:29,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 00:15:29,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-10-14 00:15:29,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 227. [2020-10-14 00:15:29,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-14 00:15:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 302 transitions. [2020-10-14 00:15:29,132 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 302 transitions. Word has length 117 [2020-10-14 00:15:29,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:29,132 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 302 transitions. [2020-10-14 00:15:29,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 00:15:29,132 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 302 transitions. [2020-10-14 00:15:29,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 00:15:29,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:29,134 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:29,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 00:15:29,134 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:29,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:29,134 INFO L82 PathProgramCache]: Analyzing trace with hash -160013685, now seen corresponding path program 17 times [2020-10-14 00:15:29,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:29,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981683329] [2020-10-14 00:15:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:29,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:29,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:29,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 00:15:29,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:29,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-14 00:15:29,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:29,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 00:15:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 00:15:29,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:29,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:29,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:29,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:29,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:29,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:29,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:29,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:29,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:29,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:29,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:29,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:29,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:29,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:29,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:29,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:29,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:29,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:29,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:29,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:29,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:29,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:29,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:29,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:29,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:29,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:29,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:30,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:30,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 00:15:30,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:30,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-14 00:15:30,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:30,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:30,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 00:15:30,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:30,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 00:15:30,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 00:15:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:30,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:30,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:30,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:30,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:30,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:15:30,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:30,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:30,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:30,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 00:15:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:30,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:30,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:30,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:30,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:30,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:30,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:30,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:30,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:30,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:30,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:30,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:30,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:15:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:30,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:30,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:30,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:30,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:30,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:15:30,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:30,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:30,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:30,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:30,831 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 4 proven. 639 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:30,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981683329] [2020-10-14 00:15:30,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:30,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 00:15:30,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602840185] [2020-10-14 00:15:30,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 00:15:30,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:30,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 00:15:30,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:15:30,835 INFO L87 Difference]: Start difference. First operand 227 states and 302 transitions. Second operand 25 states. [2020-10-14 00:15:34,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:34,305 INFO L93 Difference]: Finished difference Result 487 states and 666 transitions. [2020-10-14 00:15:34,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 00:15:34,306 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 119 [2020-10-14 00:15:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:34,308 INFO L225 Difference]: With dead ends: 487 [2020-10-14 00:15:34,308 INFO L226 Difference]: Without dead ends: 333 [2020-10-14 00:15:34,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 00:15:34,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-14 00:15:34,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 229. [2020-10-14 00:15:34,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-14 00:15:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 304 transitions. [2020-10-14 00:15:34,338 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 304 transitions. Word has length 119 [2020-10-14 00:15:34,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:34,342 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 304 transitions. [2020-10-14 00:15:34,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 00:15:34,342 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 304 transitions. [2020-10-14 00:15:34,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 00:15:34,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:34,344 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:34,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 00:15:34,344 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:34,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:34,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1978171197, now seen corresponding path program 17 times [2020-10-14 00:15:34,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:34,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157636727] [2020-10-14 00:15:34,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:34,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:34,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:34,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 00:15:34,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:34,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-14 00:15:34,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:34,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 00:15:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 00:15:34,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:15:34,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:34,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:34,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:34,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:34,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:34,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:34,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:34,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:34,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:34,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:34,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:34,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:34,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:34,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:34,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:15:34,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:34,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:34,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:34,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:34,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:35,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:35,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 00:15:35,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:35,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-14 00:15:35,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:35,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 00:15:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 00:15:35,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:35,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 00:15:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:35,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:35,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:35,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:35,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:35,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:35,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:35,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:35,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:35,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:35,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 00:15:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:35,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:35,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:35,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:35,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:35,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:35,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:35,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:35,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:35,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 00:15:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:35,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:35,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:35,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:35,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:35,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:35,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:35,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:35,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 4 proven. 681 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:35,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157636727] [2020-10-14 00:15:35,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:35,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 00:15:35,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238495174] [2020-10-14 00:15:35,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 00:15:35,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:35,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 00:15:35,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=301, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:15:35,798 INFO L87 Difference]: Start difference. First operand 229 states and 304 transitions. Second operand 25 states. [2020-10-14 00:15:36,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:36,179 INFO L93 Difference]: Finished difference Result 482 states and 678 transitions. [2020-10-14 00:15:36,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 00:15:36,180 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 120 [2020-10-14 00:15:36,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:36,182 INFO L225 Difference]: With dead ends: 482 [2020-10-14 00:15:36,182 INFO L226 Difference]: Without dead ends: 329 [2020-10-14 00:15:36,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=326, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:15:36,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-14 00:15:36,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 233. [2020-10-14 00:15:36,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-14 00:15:36,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 309 transitions. [2020-10-14 00:15:36,212 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 309 transitions. Word has length 120 [2020-10-14 00:15:36,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:36,212 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 309 transitions. [2020-10-14 00:15:36,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 00:15:36,212 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 309 transitions. [2020-10-14 00:15:36,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 00:15:36,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:36,214 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:36,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 00:15:36,215 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:36,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:36,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1206130268, now seen corresponding path program 18 times [2020-10-14 00:15:36,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:36,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502703060] [2020-10-14 00:15:36,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:36,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:36,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:36,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 00:15:36,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:36,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-14 00:15:36,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:36,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 00:15:36,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:36,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 00:15:36,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:36,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:36,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:36,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:36,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:36,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:36,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:36,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:36,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:36,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:36,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:36,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:36,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:36,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:36,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:36,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:36,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:36,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:36,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:36,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:36,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:36,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:37,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:37,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:15:37,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-14 00:15:37,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:37,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 00:15:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 00:15:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:38,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 00:15:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:38,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:38,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:38,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:38,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:38,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:15:38,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:38,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:38,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:38,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:38,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:38,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:38,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:15:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:38,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:38,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:38,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:38,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:38,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:38,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:38,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:38,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:15:38,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 00:15:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:38,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:38,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:38,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:38,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:38,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:15:38,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:38,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:38,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:15:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 4 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:38,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502703060] [2020-10-14 00:15:38,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:38,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 00:15:38,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959013510] [2020-10-14 00:15:38,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 00:15:38,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:38,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 00:15:38,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:15:38,143 INFO L87 Difference]: Start difference. First operand 233 states and 309 transitions. Second operand 26 states. [2020-10-14 00:15:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:42,222 INFO L93 Difference]: Finished difference Result 499 states and 682 transitions. [2020-10-14 00:15:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-14 00:15:42,223 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 122 [2020-10-14 00:15:42,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:42,225 INFO L225 Difference]: With dead ends: 499 [2020-10-14 00:15:42,225 INFO L226 Difference]: Without dead ends: 343 [2020-10-14 00:15:42,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=207, Invalid=2145, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 00:15:42,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-14 00:15:42,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 235. [2020-10-14 00:15:42,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-14 00:15:42,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 312 transitions. [2020-10-14 00:15:42,253 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 312 transitions. Word has length 122 [2020-10-14 00:15:42,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:42,254 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 312 transitions. [2020-10-14 00:15:42,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 00:15:42,254 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 312 transitions. [2020-10-14 00:15:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 00:15:42,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:42,255 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:42,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 00:15:42,256 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:42,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:42,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1378960780, now seen corresponding path program 18 times [2020-10-14 00:15:42,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:42,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552333929] [2020-10-14 00:15:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:42,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:42,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:42,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 00:15:42,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:42,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-14 00:15:42,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:42,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 00:15:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 00:15:42,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:42,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:42,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:42,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:42,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:42,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:42,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:42,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:42,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:42,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:42,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:42,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:42,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:42,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:42,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:42,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:42,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:42,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:42,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:42,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:42,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:42,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:42,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 00:15:42,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:42,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 00:15:42,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:42,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:42,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 00:15:42,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:42,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 00:15:42,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:43,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 00:15:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:43,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:43,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:43,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:43,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:43,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:43,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:43,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:43,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:43,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:43,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:15:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:43,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:43,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:43,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:43,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:43,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:43,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:43,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:43,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:43,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 00:15:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:43,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:43,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:43,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:43,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:43,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:43,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:43,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:43,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:43,714 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 4 proven. 746 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:43,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552333929] [2020-10-14 00:15:43,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:43,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 00:15:43,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123057669] [2020-10-14 00:15:43,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 00:15:43,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:43,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 00:15:43,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:15:43,716 INFO L87 Difference]: Start difference. First operand 235 states and 312 transitions. Second operand 26 states. [2020-10-14 00:15:44,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:44,929 INFO L93 Difference]: Finished difference Result 549 states and 767 transitions. [2020-10-14 00:15:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 00:15:44,930 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 123 [2020-10-14 00:15:44,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:44,932 INFO L225 Difference]: With dead ends: 549 [2020-10-14 00:15:44,933 INFO L226 Difference]: Without dead ends: 393 [2020-10-14 00:15:44,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 00:15:44,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-10-14 00:15:44,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 239. [2020-10-14 00:15:44,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-14 00:15:44,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 317 transitions. [2020-10-14 00:15:44,964 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 317 transitions. Word has length 123 [2020-10-14 00:15:44,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:44,964 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 317 transitions. [2020-10-14 00:15:44,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 00:15:44,964 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 317 transitions. [2020-10-14 00:15:44,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 00:15:44,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:44,966 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:44,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 00:15:44,966 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:44,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:44,967 INFO L82 PathProgramCache]: Analyzing trace with hash 890537195, now seen corresponding path program 19 times [2020-10-14 00:15:44,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:44,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160865259] [2020-10-14 00:15:44,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:44,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:45,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:45,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 00:15:45,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-14 00:15:45,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:45,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 00:15:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 00:15:45,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:45,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:45,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:45,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:45,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:45,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:45,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:45,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:45,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:45,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:45,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:45,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:45,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:45,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:45,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:45,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:45,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:45,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:45,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:45,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:45,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:45,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:45,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:45,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:46,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:46,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 00:15:46,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:46,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-10-14 00:15:46,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:46,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 00:15:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:46,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:15:46,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:46,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:15:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:46,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:46,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:46,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:46,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:46,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:46,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:46,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:46,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:46,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:46,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:46,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:46,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 00:15:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:46,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:46,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:46,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:46,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:46,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:46,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:46,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:46,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:46,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:46,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:46,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:46,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:15:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:46,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:46,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:46,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:46,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:46,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:46,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:46,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:46,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:46,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:46,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:46,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 4 proven. 768 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:46,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160865259] [2020-10-14 00:15:46,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:46,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 00:15:46,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949170370] [2020-10-14 00:15:46,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 00:15:46,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:46,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 00:15:46,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:15:46,970 INFO L87 Difference]: Start difference. First operand 239 states and 317 transitions. Second operand 27 states. [2020-10-14 00:15:51,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:51,398 INFO L93 Difference]: Finished difference Result 512 states and 700 transitions. [2020-10-14 00:15:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-14 00:15:51,399 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 125 [2020-10-14 00:15:51,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:51,401 INFO L225 Difference]: With dead ends: 512 [2020-10-14 00:15:51,402 INFO L226 Difference]: Without dead ends: 353 [2020-10-14 00:15:51,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=216, Invalid=2334, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 00:15:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-14 00:15:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 241. [2020-10-14 00:15:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-14 00:15:51,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 320 transitions. [2020-10-14 00:15:51,433 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 320 transitions. Word has length 125 [2020-10-14 00:15:51,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:51,433 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 320 transitions. [2020-10-14 00:15:51,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 00:15:51,433 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 320 transitions. [2020-10-14 00:15:51,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 00:15:51,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:51,435 INFO L422 BasicCegarLoop]: trace histogram [24, 23, 23, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:51,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 00:15:51,435 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:51,436 INFO L82 PathProgramCache]: Analyzing trace with hash 185510109, now seen corresponding path program 19 times [2020-10-14 00:15:51,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:51,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83615844] [2020-10-14 00:15:51,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:51,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:51,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:51,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 00:15:51,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:51,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-14 00:15:51,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:51,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:51,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 00:15:51,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:15:51,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 00:15:51,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:51,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:51,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:51,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:51,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:51,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:51,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:51,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:51,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:51,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:51,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:15:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:51,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:51,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:51,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:51,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:51,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:51,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:51,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:51,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:51,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:51,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:51,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:15:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:51,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:52,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:52,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 00:15:52,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-14 00:15:52,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:52,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 00:15:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:15:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 00:15:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:52,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 00:15:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:52,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:52,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:52,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:15:52,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:52,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:52,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:52,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:15:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:52,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:52,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:15:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:52,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:52,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:52,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:15:52,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:52,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:52,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:52,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:15:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:52,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:52,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 00:15:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:52,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:52,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:52,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:15:52,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:52,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:52,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:52,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:52,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:52,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:15:52,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:52,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 4 proven. 814 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:15:52,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83615844] [2020-10-14 00:15:52,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:52,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 00:15:52,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692306943] [2020-10-14 00:15:52,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 00:15:52,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:52,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 00:15:52,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=352, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:15:52,831 INFO L87 Difference]: Start difference. First operand 241 states and 320 transitions. Second operand 27 states. [2020-10-14 00:15:53,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:53,236 INFO L93 Difference]: Finished difference Result 508 states and 716 transitions. [2020-10-14 00:15:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 00:15:53,237 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 126 [2020-10-14 00:15:53,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:53,239 INFO L225 Difference]: With dead ends: 508 [2020-10-14 00:15:53,239 INFO L226 Difference]: Without dead ends: 349 [2020-10-14 00:15:53,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=377, Invalid=379, Unknown=0, NotChecked=0, Total=756 [2020-10-14 00:15:53,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-14 00:15:53,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 245. [2020-10-14 00:15:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-14 00:15:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 325 transitions. [2020-10-14 00:15:53,271 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 325 transitions. Word has length 126 [2020-10-14 00:15:53,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:53,271 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 325 transitions. [2020-10-14 00:15:53,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 00:15:53,272 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 325 transitions. [2020-10-14 00:15:53,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 00:15:53,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:53,273 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:53,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 00:15:53,273 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:53,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:53,274 INFO L82 PathProgramCache]: Analyzing trace with hash 740710396, now seen corresponding path program 20 times [2020-10-14 00:15:53,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:53,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919964656] [2020-10-14 00:15:53,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 00:15:53,295 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 00:15:53,295 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 00:15:53,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 00:15:53,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 12:15:53 BoogieIcfgContainer [2020-10-14 00:15:53,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 00:15:53,337 INFO L168 Benchmark]: Toolchain (without parser) took 128638.98 ms. Allocated memory was 147.8 MB in the beginning and 934.8 MB in the end (delta: 787.0 MB). Free memory was 103.8 MB in the beginning and 639.6 MB in the end (delta: -535.8 MB). Peak memory consumption was 251.2 MB. Max. memory is 7.1 GB. [2020-10-14 00:15:53,337 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 00:15:53,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 541.77 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.6 MB in the beginning and 180.1 MB in the end (delta: -76.5 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-10-14 00:15:53,338 INFO L168 Benchmark]: Boogie Preprocessor took 40.14 ms. Allocated memory is still 203.9 MB. Free memory was 180.1 MB in the beginning and 178.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-14 00:15:53,338 INFO L168 Benchmark]: RCFGBuilder took 519.77 ms. Allocated memory is still 203.9 MB. Free memory was 178.2 MB in the beginning and 153.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-10-14 00:15:53,338 INFO L168 Benchmark]: TraceAbstraction took 127532.22 ms. Allocated memory was 203.9 MB in the beginning and 934.8 MB in the end (delta: 730.9 MB). Free memory was 153.3 MB in the beginning and 639.6 MB in the end (delta: -486.4 MB). Peak memory consumption was 244.5 MB. Max. memory is 7.1 GB. [2020-10-14 00:15:53,340 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 541.77 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.6 MB in the beginning and 180.1 MB in the end (delta: -76.5 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.14 ms. Allocated memory is still 203.9 MB. Free memory was 180.1 MB in the beginning and 178.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 519.77 ms. Allocated memory is still 203.9 MB. Free memory was 178.2 MB in the beginning and 153.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 127532.22 ms. Allocated memory was 203.9 MB in the beginning and 934.8 MB in the end (delta: 730.9 MB). Free memory was 153.3 MB in the beginning and 639.6 MB in the end (delta: -486.4 MB). Peak memory consumption was 244.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 67, overapproximation of bitwiseAnd at line 66. Possible FailurePath: [L211] unsigned int a ; [L212] unsigned int ma = __VERIFIER_nondet_uint(); [L213] signed char ea = __VERIFIER_nondet_char(); [L214] unsigned int b ; [L215] unsigned int mb = __VERIFIER_nondet_uint(); [L216] signed char eb = __VERIFIER_nondet_char(); [L217] unsigned int r_mul ; [L218] unsigned int zero ; [L219] unsigned int one ; [L220] int sb ; [L221] int tmp ; [L222] int tmp___0 ; [L223] int tmp___1 ; [L224] int __retres16 ; [L228] CALL, EXPR base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L228] RET, EXPR base2flt(0, 0) [L228] zero = base2flt(0, 0) [L229] CALL, EXPR base2flt(1, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND TRUE m < 1U << 24U [L27] COND TRUE 1 [L29] COND FALSE !(e <= -128) [L35] e = e - 1 [L36] m = m << 1U [L37] COND FALSE !(m < 1U << 24U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L229] RET, EXPR base2flt(1, 0) [L229] one = base2flt(1, 0) [L230] CALL, EXPR base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND TRUE m >= 1U << 25U [L54] COND TRUE e >= 127 [L55] __retres4 = 4294967295U [L70] return (__retres4); [L230] RET, EXPR base2flt(ma, ea) [L230] a = base2flt(ma, ea) [L231] CALL, EXPR base2flt(mb, eb) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] RET, EXPR base2flt(mb, eb) [L231] b = base2flt(mb, eb) [L232] CALL, EXPR mulflt(a, b) [L138] unsigned int res ; [L139] unsigned int ma ; [L140] unsigned int mb ; [L141] unsigned long long accu ; [L142] int ea ; [L143] int eb ; [L144] unsigned int tmp ; [L145] unsigned int __retres10 ; [L148] COND FALSE !(a < b) [L155] COND TRUE ! b [L156] __retres10 = 0U [L207] return (__retres10); [L232] RET, EXPR mulflt(a, b) [L232] r_mul = mulflt(a, b) [L234] COND FALSE !(b < one) [L237] COND FALSE !(b > one) [L240] tmp = 0 [L242] sb = tmp [L244] COND TRUE sb == 0 [L245] COND TRUE r_mul < a [L246] tmp___1 = -1 [L256] CALL __VERIFIER_assert(tmp___1 == 0) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 127.4s, OverallIterations: 54, TraceHistogramMax: 24, AutomataDifference: 43.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4388 SDtfs, 5462 SDslu, 42687 SDs, 0 SdLazy, 29883 SolverSat, 1318 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2031 GetRequests, 917 SyntacticMatches, 0 SemanticMatches, 1114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3404 ImplicationChecksByTransitivity, 24.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=245occurred in iteration=53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 53 MinimizatonAttempts, 3226 StatesRemovedByMinimization, 51 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 80.8s InterpolantComputationTime, 4780 NumberOfCodeBlocks, 4780 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 4599 ConstructedInterpolants, 0 QuantifiedInterpolants, 1970512 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 53 InterpolantComputations, 4 PerfectInterpolantSequences, 1293/14414 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...