/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/xor4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 04:34:12,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 04:34:12,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 04:34:12,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 04:34:12,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 04:34:12,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 04:34:12,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 04:34:12,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 04:34:12,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 04:34:12,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 04:34:12,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 04:34:12,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 04:34:12,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 04:34:12,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 04:34:12,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 04:34:12,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 04:34:12,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 04:34:12,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 04:34:12,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 04:34:12,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 04:34:12,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 04:34:12,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 04:34:12,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 04:34:12,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 04:34:12,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 04:34:12,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 04:34:12,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 04:34:12,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 04:34:12,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 04:34:12,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 04:34:12,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 04:34:12,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 04:34:12,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 04:34:12,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 04:34:12,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 04:34:12,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 04:34:12,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 04:34:12,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 04:34:12,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 04:34:12,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 04:34:12,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 04:34:12,947 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 [2020-10-13 04:34:12,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 04:34:12,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 04:34:12,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 04:34:12,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 04:34:12,989 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 04:34:12,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 04:34:12,990 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 04:34:12,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 04:34:12,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 04:34:12,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 04:34:12,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 04:34:12,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 04:34:12,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 04:34:12,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 04:34:12,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 04:34:12,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 04:34:12,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 04:34:12,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 04:34:12,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 04:34:12,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 04:34:12,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 04:34:12,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 04:34:12,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 04:34:12,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 04:34:12,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 04:34:12,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 04:34:12,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 04:34:12,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 04:34:12,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 04:34:12,995 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 04:34:13,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 04:34:13,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 04:34:13,333 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 04:34:13,336 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 04:34:13,336 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 04:34:13,337 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor4.i [2020-10-13 04:34:13,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f76f24fdf/379fc953173a41cba092ed09ff8bc9c5/FLAGe2b452b6a [2020-10-13 04:34:13,835 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 04:34:13,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/xor4.i [2020-10-13 04:34:13,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f76f24fdf/379fc953173a41cba092ed09ff8bc9c5/FLAGe2b452b6a [2020-10-13 04:34:14,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f76f24fdf/379fc953173a41cba092ed09ff8bc9c5 [2020-10-13 04:34:14,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 04:34:14,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 04:34:14,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 04:34:14,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 04:34:14,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 04:34:14,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:34:14" (1/1) ... [2020-10-13 04:34:14,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d85ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:14, skipping insertion in model container [2020-10-13 04:34:14,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:34:14" (1/1) ... [2020-10-13 04:34:14,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 04:34:14,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 04:34:14,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:34:14,425 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 04:34:14,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:34:14,466 INFO L208 MainTranslator]: Completed translation [2020-10-13 04:34:14,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:14 WrapperNode [2020-10-13 04:34:14,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 04:34:14,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 04:34:14,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 04:34:14,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 04:34:14,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:14" (1/1) ... [2020-10-13 04:34:14,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:14" (1/1) ... [2020-10-13 04:34:14,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:14" (1/1) ... [2020-10-13 04:34:14,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:14" (1/1) ... [2020-10-13 04:34:14,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:14" (1/1) ... [2020-10-13 04:34:14,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:14" (1/1) ... [2020-10-13 04:34:14,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:14" (1/1) ... [2020-10-13 04:34:14,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 04:34:14,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 04:34:14,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 04:34:14,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 04:34:14,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:14" (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 [2020-10-13 04:34:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 04:34:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 04:34:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2020-10-13 04:34:14,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 04:34:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 04:34:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 04:34:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2020-10-13 04:34:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 04:34:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 04:34:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 04:34:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 04:34:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 04:34:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 04:34:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 04:34:14,994 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 04:34:14,995 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 04:34:14,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:34:14 BoogieIcfgContainer [2020-10-13 04:34:14,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 04:34:14,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 04:34:15,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 04:34:15,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 04:34:15,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:34:14" (1/3) ... [2020-10-13 04:34:15,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c516a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:34:15, skipping insertion in model container [2020-10-13 04:34:15,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:14" (2/3) ... [2020-10-13 04:34:15,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c516a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:34:15, skipping insertion in model container [2020-10-13 04:34:15,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:34:14" (3/3) ... [2020-10-13 04:34:15,006 INFO L109 eAbstractionObserver]: Analyzing ICFG xor4.i [2020-10-13 04:34:15,016 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 04:34:15,023 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 04:34:15,036 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 04:34:15,059 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 04:34:15,059 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 04:34:15,059 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 04:34:15,059 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 04:34:15,059 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 04:34:15,060 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 04:34:15,060 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 04:34:15,060 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 04:34:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 04:34:15,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:34:15,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:15,085 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:15,086 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:15,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:15,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1461178031, now seen corresponding path program 1 times [2020-10-13 04:34:15,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:15,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516199766] [2020-10-13 04:34:15,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:15,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:15,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:15,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:15,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:15,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:15,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:15,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:34:15,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:15,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-13 04:34:15,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:15,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:15,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:34:15,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:15,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 04:34:15,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:15,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:15,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:15,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:15,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:15,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:34:15,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:15,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:15,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:15,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:15,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:34:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:15,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:15,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:15,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:15,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:15,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:15,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:34:15,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:15,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:15,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:34:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:15,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:15,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:15,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:15,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:15,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:15,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:34:15,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:15,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:15,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:15,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:34:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:15,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:15,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:15,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:15,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:15,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:15,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:34:15,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:15,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:15,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:34:15,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:34:15,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516199766] [2020-10-13 04:34:15,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:34:15,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 04:34:15,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641970628] [2020-10-13 04:34:15,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 04:34:15,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:15,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 04:34:15,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:34:15,830 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 04:34:15,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:15,914 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 04:34:15,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 04:34:15,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 04:34:15,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:15,923 INFO L225 Difference]: With dead ends: 54 [2020-10-13 04:34:15,923 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 04:34:15,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:34:15,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 04:34:15,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 04:34:15,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 04:34:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 04:34:15,963 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 04:34:15,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:15,964 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 04:34:15,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 04:34:15,964 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 04:34:15,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:34:15,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:15,967 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:15,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 04:34:15,968 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:15,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:15,968 INFO L82 PathProgramCache]: Analyzing trace with hash -595992629, now seen corresponding path program 1 times [2020-10-13 04:34:15,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:15,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036370868] [2020-10-13 04:34:15,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:15,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:16,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:34:16,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-10-13 04:34:16,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:34:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 04:34:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:34:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:16,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:16,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:16,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:16,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:16,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:34:16,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:16,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:16,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:34:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:16,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:16,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:16,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:16,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:34:16,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:16,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:34:16,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:34:16,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:34:16,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:16,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:34:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:16,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:16,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:16,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:16,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:16,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:16,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:16,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:34:16,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:16,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:16,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:34:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:16,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:16,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:16,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:16,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:16,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:34:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 04:34:16,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036370868] [2020-10-13 04:34:16,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:16,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 04:34:16,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074555027] [2020-10-13 04:34:16,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:34:16,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:16,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:34:16,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:34:16,924 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 04:34:17,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:17,025 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-13 04:34:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:34:17,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 04:34:17,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:17,027 INFO L225 Difference]: With dead ends: 45 [2020-10-13 04:34:17,028 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 04:34:17,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:34:17,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 04:34:17,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 04:34:17,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 04:34:17,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 04:34:17,038 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 04:34:17,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:17,038 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 04:34:17,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:34:17,039 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 04:34:17,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 04:34:17,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:17,041 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:17,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 04:34:17,041 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:17,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:17,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1309759401, now seen corresponding path program 1 times [2020-10-13 04:34:17,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:17,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593328000] [2020-10-13 04:34:17,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:17,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:17,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:17,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:17,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:18,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:18,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 04:34:18,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:18,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1931 [2020-10-13 04:34:18,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:18,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:34:18,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 04:34:18,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:34:18,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:19,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:19,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:19,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:19,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:34:19,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:19,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:19,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:34:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:19,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:19,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:19,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:34:19,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:19,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:19,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:19,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:34:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:19,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:19,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:19,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:19,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:34:19,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:19,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:19,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:34:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:19,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:19,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:19,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:19,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:34:19,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:19,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:19,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 04:34:19,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593328000] [2020-10-13 04:34:19,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:34:19,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:34:19,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694576271] [2020-10-13 04:34:19,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:34:19,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:19,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:34:19,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:34:19,097 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 04:34:19,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:19,177 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 04:34:19,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:34:19,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 04:34:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:19,179 INFO L225 Difference]: With dead ends: 42 [2020-10-13 04:34:19,179 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 04:34:19,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:34:19,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 04:34:19,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 04:34:19,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 04:34:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 04:34:19,186 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-13 04:34:19,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:19,188 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 04:34:19,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:34:19,189 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 04:34:19,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 04:34:19,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:19,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:19,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 04:34:19,191 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:19,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:19,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1209333671, now seen corresponding path program 1 times [2020-10-13 04:34:19,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:19,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442472585] [2020-10-13 04:34:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:19,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:22,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:22,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 04:34:22,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:22,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3218 [2020-10-13 04:34:22,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:34:22,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:22,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:34:22,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:22,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:22,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:22,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:22,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:22,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 04:34:22,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:22,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:22,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:22,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:22,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:34:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:22,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:22,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:22,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:22,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:34:22,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:22,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:34:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:22,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:22,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:22,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:22,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:22,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:34:22,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:22,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:22,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:22,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:22,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:34:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:22,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:22,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:22,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:22,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:22,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:22,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:34:22,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:22,570 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 04:34:22,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442472585] [2020-10-13 04:34:22,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:34:22,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:34:22,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513863598] [2020-10-13 04:34:22,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:34:22,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:22,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:34:22,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:34:22,576 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 04:34:22,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:22,698 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-13 04:34:22,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:34:22,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 04:34:22,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:22,699 INFO L225 Difference]: With dead ends: 50 [2020-10-13 04:34:22,699 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 04:34:22,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:34:22,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 04:34:22,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 04:34:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 04:34:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 04:34:22,710 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 04:34:22,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:22,711 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 04:34:22,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:34:22,712 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 04:34:22,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 04:34:22,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:22,714 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:22,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 04:34:22,715 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:22,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:22,715 INFO L82 PathProgramCache]: Analyzing trace with hash -233991671, now seen corresponding path program 1 times [2020-10-13 04:34:22,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:22,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279358705] [2020-10-13 04:34:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:22,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:22,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:22,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:23,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:26,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:26,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 04:34:26,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:26,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4083 [2020-10-13 04:34:26,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:26,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:34:26,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 04:34:26,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:34:26,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:26,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:26,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:26,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:26,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:26,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:26,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:26,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:26,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:26,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:26,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:26,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:26,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:34:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:26,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:26,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:26,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:26,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:26,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:34:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:34:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:34:26,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:26,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 04:34:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:26,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:26,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:26,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:26,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:26,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:26,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:34:26,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:26,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:26,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:26,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:26,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:26,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:34:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:26,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:26,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:26,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:26,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:26,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:26,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:34:26,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279358705] [2020-10-13 04:34:26,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:26,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:34:26,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693675215] [2020-10-13 04:34:26,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:34:26,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:26,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:34:26,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:34:26,922 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 04:34:27,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:27,009 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-13 04:34:27,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:34:27,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 04:34:27,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:27,011 INFO L225 Difference]: With dead ends: 51 [2020-10-13 04:34:27,011 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 04:34:27,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:34:27,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 04:34:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 04:34:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 04:34:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 04:34:27,018 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 04:34:27,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:27,019 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 04:34:27,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:34:27,019 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 04:34:27,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 04:34:27,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:27,020 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:27,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 04:34:27,021 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:27,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:27,021 INFO L82 PathProgramCache]: Analyzing trace with hash -571391385, now seen corresponding path program 2 times [2020-10-13 04:34:27,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:27,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974071273] [2020-10-13 04:34:27,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:27,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:27,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:27,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:27,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:27,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:32,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:32,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 04:34:32,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:32,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:34:32,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:32,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:34:32,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:32,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:34:32,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:32,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:32,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:32,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:32,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:32,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:32,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:34:32,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:32,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:32,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:32,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:32,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:34:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:32,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:32,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:32,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:32,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:32,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:32,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:34:32,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:32,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:32,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:34:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:32,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:32,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:32,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:32,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:32,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:32,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:34:32,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:32,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:32,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:32,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:32,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:32,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:34:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:32,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:32,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:32,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:32,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:32,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:34:32,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:32,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:32,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:32,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:32,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-13 04:34:32,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974071273] [2020-10-13 04:34:32,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:32,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:34:32,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740538648] [2020-10-13 04:34:32,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:34:32,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:32,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:34:32,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:34:32,195 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-13 04:34:32,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:32,312 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-10-13 04:34:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:34:32,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-13 04:34:32,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:32,314 INFO L225 Difference]: With dead ends: 56 [2020-10-13 04:34:32,315 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 04:34:32,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:34:32,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 04:34:32,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 04:34:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 04:34:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 04:34:32,331 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2020-10-13 04:34:32,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:32,332 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 04:34:32,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:34:32,332 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 04:34:32,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 04:34:32,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:32,336 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 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] [2020-10-13 04:34:32,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 04:34:32,338 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:32,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:32,338 INFO L82 PathProgramCache]: Analyzing trace with hash -52274487, now seen corresponding path program 3 times [2020-10-13 04:34:32,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:32,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690032893] [2020-10-13 04:34:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:32,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:32,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:32,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:32,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:37,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:37,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 04:34:37,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:37,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:34:37,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:34:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 04:34:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:34:37,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:37,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:37,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:37,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:37,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:37,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:37,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:34:37,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:37,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:37,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:34:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:37,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:37,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:37,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:37,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:37,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:37,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:34:37,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:37,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 04:34:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:37,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:37,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:37,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:37,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:37,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:37,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:37,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:37,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:37,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:37,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:37,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:34:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:37,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:37,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:37,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:37,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:37,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:37,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:34:37,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:37,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 04:34:37,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690032893] [2020-10-13 04:34:37,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:37,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:34:37,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278533585] [2020-10-13 04:34:37,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:34:37,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:37,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:34:37,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:34:37,465 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 04:34:37,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:37,547 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-13 04:34:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:34:37,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-13 04:34:37,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:37,548 INFO L225 Difference]: With dead ends: 51 [2020-10-13 04:34:37,548 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 04:34:37,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:34:37,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 04:34:37,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 04:34:37,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 04:34:37,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 04:34:37,554 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-13 04:34:37,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:37,555 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 04:34:37,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:34:37,555 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 04:34:37,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 04:34:37,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:37,556 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:37,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 04:34:37,556 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:37,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:37,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1717617977, now seen corresponding path program 4 times [2020-10-13 04:34:37,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:37,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595519547] [2020-10-13 04:34:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:37,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:37,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:37,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:37,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:37,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:42,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:42,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 04:34:42,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:42,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:34:42,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:42,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:34:42,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:34:42,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:34:42,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:42,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:42,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:42,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:42,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:42,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:42,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:42,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:42,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:42,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:42,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:42,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:42,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:34:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:42,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:42,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:42,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:42,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:42,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:42,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:34:42,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 04:34:42,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 04:34:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:42,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:42,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:42,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:42,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:42,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:34:42,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:42,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:34:42,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:34:42,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:34:42,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:42,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:34:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:42,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:42,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:42,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:42,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:42,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:42,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:34:42,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:42,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:42,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:42,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:42,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 04:34:42,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595519547] [2020-10-13 04:34:42,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:42,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:34:42,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828162469] [2020-10-13 04:34:42,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:34:42,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:42,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:34:42,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:34:42,799 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 04:34:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:42,896 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-13 04:34:42,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:34:42,897 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 04:34:42,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:42,897 INFO L225 Difference]: With dead ends: 61 [2020-10-13 04:34:42,898 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 04:34:42,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:34:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 04:34:42,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 04:34:42,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 04:34:42,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 04:34:42,908 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-13 04:34:42,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:42,909 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 04:34:42,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:34:42,909 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 04:34:42,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 04:34:42,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:42,911 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:42,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 04:34:42,911 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:42,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:42,912 INFO L82 PathProgramCache]: Analyzing trace with hash -310901851, now seen corresponding path program 5 times [2020-10-13 04:34:42,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:42,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861300433] [2020-10-13 04:34:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:42,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:42,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:42,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:42,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:44,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:47,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:47,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 04:34:47,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:47,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:34:47,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:34:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 04:34:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:34:47,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:47,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:47,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:47,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:47,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:47,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:47,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:47,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:47,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:47,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:47,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:47,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:34:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:47,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:47,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:47,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:47,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:47,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:47,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:34:47,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:47,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:47,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 04:34:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:47,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:47,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:47,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:47,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:47,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:47,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:34:47,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:47,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 04:34:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:47,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:48,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:48,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:48,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:48,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:48,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:34:48,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:48,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:48,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:34:48,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:48,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-13 04:34:48,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861300433] [2020-10-13 04:34:48,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:48,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:34:48,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975495135] [2020-10-13 04:34:48,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:34:48,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:48,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:34:48,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:34:48,020 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-13 04:34:48,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:48,088 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-13 04:34:48,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:34:48,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 04:34:48,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:48,090 INFO L225 Difference]: With dead ends: 57 [2020-10-13 04:34:48,090 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 04:34:48,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:34:48,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 04:34:48,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 04:34:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 04:34:48,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 04:34:48,099 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-13 04:34:48,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:48,100 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 04:34:48,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:34:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 04:34:48,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 04:34:48,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:48,103 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:48,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 04:34:48,104 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:48,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:48,105 INFO L82 PathProgramCache]: Analyzing trace with hash -921066333, now seen corresponding path program 6 times [2020-10-13 04:34:48,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:48,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846018363] [2020-10-13 04:34:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:48,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:48,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:48,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:48,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:50,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:53,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:53,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 04:34:53,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:53,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:34:53,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:34:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:53,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:34:53,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:53,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:53,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:53,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:53,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:53,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:53,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:53,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:53,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:53,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:34:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:53,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:53,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:53,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:53,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:53,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:34:53,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:34:53,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:53,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:53,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 04:34:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:53,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:53,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:53,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:53,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:53,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:53,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:34:53,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:53,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:53,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:34:53,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:53,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:53,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:34:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:53,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:53,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:53,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:53,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:53,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:53,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:53,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:53,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:34:53,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:53,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:53,211 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 04:34:53,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846018363] [2020-10-13 04:34:53,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:53,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:34:53,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38727647] [2020-10-13 04:34:53,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:34:53,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:53,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:34:53,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:34:53,213 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2020-10-13 04:34:53,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:53,298 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2020-10-13 04:34:53,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:34:53,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-13 04:34:53,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:53,299 INFO L225 Difference]: With dead ends: 70 [2020-10-13 04:34:53,299 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 04:34:53,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:34:53,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 04:34:53,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 04:34:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 04:34:53,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 04:34:53,305 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-13 04:34:53,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:53,306 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 04:34:53,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:34:53,306 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 04:34:53,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 04:34:53,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:53,307 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:53,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 04:34:53,307 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:53,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:53,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1655752187, now seen corresponding path program 7 times [2020-10-13 04:34:53,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:53,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434388563] [2020-10-13 04:34:53,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:53,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:53,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:53,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:53,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:56,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:58,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:58,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 04:34:58,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:58,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:34:58,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:58,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:34:58,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:58,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:34:58,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:58,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:58,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:58,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:58,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:58,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:58,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:58,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:58,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:58,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:34:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:58,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:58,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:58,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:58,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:58,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:34:58,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:34:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:58,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 04:34:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:58,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:58,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:58,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:58,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:58,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:58,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:34:58,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:34:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:58,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:58,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:34:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:58,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:58,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:58,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:58,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:58,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:58,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:34:58,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:58,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:58,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:34:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:58,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 04:34:58,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434388563] [2020-10-13 04:34:58,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:58,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:34:58,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641981116] [2020-10-13 04:34:58,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:34:58,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:58,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:34:58,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:34:58,431 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 04:34:58,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:58,497 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2020-10-13 04:34:58,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:34:58,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-13 04:34:58,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:58,498 INFO L225 Difference]: With dead ends: 72 [2020-10-13 04:34:58,498 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 04:34:58,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:34:58,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 04:34:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 04:34:58,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 04:34:58,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 04:34:58,504 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-13 04:34:58,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:58,504 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 04:34:58,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:34:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 04:34:58,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 04:34:58,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:58,506 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:58,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 04:34:58,506 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:58,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:58,506 INFO L82 PathProgramCache]: Analyzing trace with hash 980745959, now seen corresponding path program 8 times [2020-10-13 04:34:58,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:58,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45384168] [2020-10-13 04:34:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:58,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:58,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:58,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:58,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:02,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:03,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:03,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 04:35:03,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:35:03,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:35:03,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:03,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:35:03,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 04:35:03,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:35:03,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:03,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:03,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:03,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:03,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:03,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:03,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:03,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:03,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:03,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:03,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:03,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:03,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:35:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:03,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:03,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:03,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:35:03,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:03,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:35:03,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:03,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:03,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:03,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:03,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:03,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 04:35:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:03,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:03,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:03,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:03,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:35:03,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:03,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:35:03,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:03,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:03,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 04:35:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:03,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:03,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:03,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:35:03,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:03,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:35:03,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:35:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:03,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-13 04:35:03,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45384168] [2020-10-13 04:35:03,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:03,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:35:03,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287094307] [2020-10-13 04:35:03,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:35:03,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:03,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:35:03,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:35:03,612 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 7 states. [2020-10-13 04:35:03,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:03,692 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-13 04:35:03,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:35:03,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 04:35:03,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:03,695 INFO L225 Difference]: With dead ends: 63 [2020-10-13 04:35:03,695 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 04:35:03,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:35:03,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 04:35:03,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 04:35:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 04:35:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 04:35:03,707 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 64 [2020-10-13 04:35:03,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:03,710 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 04:35:03,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:35:03,711 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 04:35:03,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 04:35:03,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:03,712 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:03,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 04:35:03,712 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:03,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:03,713 INFO L82 PathProgramCache]: Analyzing trace with hash -893069467, now seen corresponding path program 9 times [2020-10-13 04:35:03,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:03,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196195812] [2020-10-13 04:35:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:03,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:03,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:03,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:03,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:08,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:08,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 04:35:08,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:08,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:35:08,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:35:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 04:35:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:35:08,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:08,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:08,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:08,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:08,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:08,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:08,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:08,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:08,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:08,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:08,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:08,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:35:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:08,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:08,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:08,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:08,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:35:08,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:08,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:35:08,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:08,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:08,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:08,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:08,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:08,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 04:35:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:08,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:08,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:08,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:35:08,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:08,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 04:35:08,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:08,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:35:08,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:35:08,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:35:08,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:08,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 04:35:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:08,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:08,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:08,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:08,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:35:08,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:08,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:35:08,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:08,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:08,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:35:08,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:08,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 28 proven. 37 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-13 04:35:08,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196195812] [2020-10-13 04:35:08,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:08,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:35:08,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817012146] [2020-10-13 04:35:08,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:35:08,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:08,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:35:08,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:35:08,821 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-13 04:35:08,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:08,938 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-10-13 04:35:08,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:35:08,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-13 04:35:08,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:08,940 INFO L225 Difference]: With dead ends: 77 [2020-10-13 04:35:08,940 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 04:35:08,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:35:08,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 04:35:08,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 04:35:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 04:35:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 04:35:08,947 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 66 [2020-10-13 04:35:08,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:08,948 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 04:35:08,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:35:08,948 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 04:35:08,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 04:35:08,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:08,949 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:08,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 04:35:08,949 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:08,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:08,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1541017661, now seen corresponding path program 10 times [2020-10-13 04:35:08,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:08,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721947717] [2020-10-13 04:35:08,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:08,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:08,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:08,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:09,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:13,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:13,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 04:35:13,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:13,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:35:13,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:35:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 04:35:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:35:13,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:13,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:13,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:13,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:13,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:13,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:13,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:13,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:13,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:35:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:13,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:13,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:13,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:13,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:13,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:35:13,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:13,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:35:13,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:35:13,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:35:13,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:14,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:35:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:14,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:14,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:14,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:14,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:14,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:35:14,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:35:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:14,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:35:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:14,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:14,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:14,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:14,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:14,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:35:14,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:14,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:14,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:35:14,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:14,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-13 04:35:14,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721947717] [2020-10-13 04:35:14,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:14,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:35:14,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094549768] [2020-10-13 04:35:14,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:35:14,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:14,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:35:14,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:35:14,059 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-13 04:35:14,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:14,177 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-13 04:35:14,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:35:14,177 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-13 04:35:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:14,178 INFO L225 Difference]: With dead ends: 81 [2020-10-13 04:35:14,178 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 04:35:14,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:35:14,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 04:35:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 04:35:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 04:35:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 04:35:14,187 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 72 [2020-10-13 04:35:14,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:14,187 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 04:35:14,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:35:14,187 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 04:35:14,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 04:35:14,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:14,188 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:14,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 04:35:14,188 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:14,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:14,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1836873311, now seen corresponding path program 11 times [2020-10-13 04:35:14,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:14,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729135517] [2020-10-13 04:35:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:14,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:14,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:14,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:19,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:19,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 04:35:19,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:19,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:35:19,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:19,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:35:19,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:35:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:35:19,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:19,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:19,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:19,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:19,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:19,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:19,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:35:19,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:19,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:19,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:35:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:19,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:19,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:19,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:19,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:19,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:19,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:35:19,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:19,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:19,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:19,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:19,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 04:35:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:19,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:19,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:19,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:19,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:19,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:35:19,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:19,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:35:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:19,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:19,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:19,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:19,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:19,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:19,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:35:19,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:19,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:19,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:19,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:19,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 04:35:19,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729135517] [2020-10-13 04:35:19,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:19,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:35:19,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475589523] [2020-10-13 04:35:19,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:35:19,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:19,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:35:19,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:35:19,285 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 04:35:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:19,365 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-13 04:35:19,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:35:19,366 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-13 04:35:19,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:19,367 INFO L225 Difference]: With dead ends: 86 [2020-10-13 04:35:19,367 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 04:35:19,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:35:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 04:35:19,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 04:35:19,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 04:35:19,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 04:35:19,374 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-13 04:35:19,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:19,375 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 04:35:19,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:35:19,375 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 04:35:19,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 04:35:19,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:19,376 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:19,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 04:35:19,376 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:19,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:19,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1986573693, now seen corresponding path program 12 times [2020-10-13 04:35:19,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:19,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677173742] [2020-10-13 04:35:19,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:19,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:19,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:19,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:19,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:24,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:24,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 04:35:24,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:24,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:35:24,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:35:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 04:35:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:35:24,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:24,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:24,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:24,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:24,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:24,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:24,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:24,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:24,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:24,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:24,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:24,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:35:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:24,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:24,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:24,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:24,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:24,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:35:24,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:24,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:24,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 04:35:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:24,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:24,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:24,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:24,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:24,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:24,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:35:24,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:24,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:24,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:35:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:24,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:24,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:24,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:24,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:24,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:35:24,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:24,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:24,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:35:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 04:35:24,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677173742] [2020-10-13 04:35:24,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:24,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:35:24,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974790157] [2020-10-13 04:35:24,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:35:24,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:24,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:35:24,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:35:24,549 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 8 states. [2020-10-13 04:35:24,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:24,662 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-13 04:35:24,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:35:24,663 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-13 04:35:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:24,664 INFO L225 Difference]: With dead ends: 75 [2020-10-13 04:35:24,664 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 04:35:24,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:35:24,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 04:35:24,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 04:35:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 04:35:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 04:35:24,683 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-13 04:35:24,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:24,683 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 04:35:24,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:35:24,684 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 04:35:24,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 04:35:24,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:24,685 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:24,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 04:35:24,685 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:24,687 INFO L82 PathProgramCache]: Analyzing trace with hash -401359871, now seen corresponding path program 13 times [2020-10-13 04:35:24,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:24,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299852071] [2020-10-13 04:35:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:24,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:24,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:24,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:24,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:29,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:29,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 04:35:29,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:35:29,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:35:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 04:35:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:35:29,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:29,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:29,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:29,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:29,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:29,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:29,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:29,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:29,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:29,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:29,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:35:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:29,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:29,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:29,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:29,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:29,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:35:29,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:35:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:35:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:35:29,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:29,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 04:35:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:29,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:29,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:29,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:29,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:29,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:29,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:35:29,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:29,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:29,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:35:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:29,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:29,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:29,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:29,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:29,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:29,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:35:29,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:29,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:29,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:29,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:29,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:35:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-13 04:35:29,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299852071] [2020-10-13 04:35:29,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:29,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:35:29,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296111367] [2020-10-13 04:35:29,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:35:29,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:29,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:35:29,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:35:29,902 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 9 states. [2020-10-13 04:35:30,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:30,106 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-13 04:35:30,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:35:30,107 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-13 04:35:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:30,108 INFO L225 Difference]: With dead ends: 91 [2020-10-13 04:35:30,108 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 04:35:30,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:35:30,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 04:35:30,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 04:35:30,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 04:35:30,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 04:35:30,125 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 82 [2020-10-13 04:35:30,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:30,126 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 04:35:30,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:35:30,126 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 04:35:30,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 04:35:30,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:30,127 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:30,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 04:35:30,130 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:30,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:30,131 INFO L82 PathProgramCache]: Analyzing trace with hash -53408161, now seen corresponding path program 14 times [2020-10-13 04:35:30,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:30,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357165806] [2020-10-13 04:35:30,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:30,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:30,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:30,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:30,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:35,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:35,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 04:35:35,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:35,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:35:35,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:35,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:35:35,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 04:35:35,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:35:35,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:35,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:35,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:35,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:35,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:35,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:35,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:35,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:35,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:35,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:35,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:35,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:35,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:35:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:35,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:35,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:35,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:35,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:35,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:35,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:35:35,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:35,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:35:35,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 04:35:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:35,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:35,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:35,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:35,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:35,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:35,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:35:35,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:35,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:35,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:35,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:35,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:35,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 04:35:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:35,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:35,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:35,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:35,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:35,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:35:35,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:35:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2020-10-13 04:35:35,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357165806] [2020-10-13 04:35:35,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:35,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:35:35,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559826121] [2020-10-13 04:35:35,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:35:35,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:35,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:35:35,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:35:35,323 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-13 04:35:35,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:35,420 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-10-13 04:35:35,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:35:35,421 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-13 04:35:35,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:35,421 INFO L225 Difference]: With dead ends: 81 [2020-10-13 04:35:35,421 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 04:35:35,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:35:35,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 04:35:35,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 04:35:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 04:35:35,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 04:35:35,426 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-13 04:35:35,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:35,427 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 04:35:35,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:35:35,427 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 04:35:35,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 04:35:35,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:35,428 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:35,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 04:35:35,429 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:35,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:35,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1529773859, now seen corresponding path program 15 times [2020-10-13 04:35:35,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:35,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586929255] [2020-10-13 04:35:35,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:35,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:35,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:35,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:35,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:40,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:40,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 04:35:40,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:40,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:35:40,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:35:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:35:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:35:40,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:40,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:40,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:40,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:40,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:40,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:40,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:40,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:40,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:40,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:40,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:40,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:40,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:35:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:40,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:40,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:40,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:40,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:40,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:40,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:35:40,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:40,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:40,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:40,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:40,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:40,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 04:35:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:40,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:40,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:40,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:40,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:40,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:40,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:35:40,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:40,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:40,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:40,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:40,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:40,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:35:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:40,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:40,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:40,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:40,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:40,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:35:40,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:40,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:40,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:40,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:40,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 04:35:40,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586929255] [2020-10-13 04:35:40,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:40,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:35:40,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808005824] [2020-10-13 04:35:40,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:35:40,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:40,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:35:40,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:35:40,558 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 9 states. [2020-10-13 04:35:40,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:40,632 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-10-13 04:35:40,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:35:40,633 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 04:35:40,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:40,634 INFO L225 Difference]: With dead ends: 100 [2020-10-13 04:35:40,634 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 04:35:40,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:35:40,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 04:35:40,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 04:35:40,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 04:35:40,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 04:35:40,639 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 90 [2020-10-13 04:35:40,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:40,639 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 04:35:40,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:35:40,640 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 04:35:40,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 04:35:40,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:40,641 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:40,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 04:35:40,641 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:40,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:40,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1810955967, now seen corresponding path program 16 times [2020-10-13 04:35:40,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:40,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320718316] [2020-10-13 04:35:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:40,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:40,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:40,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:40,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:45,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:45,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 04:35:45,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:45,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 04:35:45,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:35:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:35:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:35:45,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:45,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:45,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:45,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:45,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:45,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:45,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:45,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:45,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:45,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:45,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:45,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:45,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:35:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:45,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:45,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:45,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:45,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:45,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:45,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:35:45,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:45,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:45,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 04:35:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:45,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:45,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:45,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:45,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:45,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:45,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:35:45,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:45,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:45,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 04:35:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:45,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:45,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:45,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:45,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:45,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:45,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:35:45,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:45,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 04:35:45,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320718316] [2020-10-13 04:35:45,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:45,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:35:45,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328560100] [2020-10-13 04:35:45,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:35:45,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:45,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:35:45,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:35:45,785 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 10 states. [2020-10-13 04:35:45,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:45,896 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2020-10-13 04:35:45,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:35:45,896 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-13 04:35:45,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:45,897 INFO L225 Difference]: With dead ends: 102 [2020-10-13 04:35:45,897 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 04:35:45,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:35:45,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 04:35:45,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 04:35:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 04:35:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 04:35:45,904 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 92 [2020-10-13 04:35:45,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:45,904 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 04:35:45,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:35:45,905 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 04:35:45,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 04:35:45,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:45,907 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 7, 7, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:45,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 04:35:45,907 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:45,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:45,907 INFO L82 PathProgramCache]: Analyzing trace with hash -383218655, now seen corresponding path program 17 times [2020-10-13 04:35:45,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:45,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492844104] [2020-10-13 04:35:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:45,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:45,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:45,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:46,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:50,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:50,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 04:35:50,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:50,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:35:50,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:35:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-13 04:35:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:35:50,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:50,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:50,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:50,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:50,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:50,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:50,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:50,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:50,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:50,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:35:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:50,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:51,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:51,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:51,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:51,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:51,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:35:51,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:51,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:51,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:35:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:51,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:51,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:51,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:51,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:51,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:51,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:35:51,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:51,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:51,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:51,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:51,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:51,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 04:35:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:51,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:51,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:51,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:51,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:35:51,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2020-10-13 04:35:51,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492844104] [2020-10-13 04:35:51,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:51,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:35:51,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784464414] [2020-10-13 04:35:51,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:35:51,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:51,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:35:51,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:35:51,054 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 10 states. [2020-10-13 04:35:51,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:51,156 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2020-10-13 04:35:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:35:51,156 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-13 04:35:51,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:51,157 INFO L225 Difference]: With dead ends: 87 [2020-10-13 04:35:51,157 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 04:35:51,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:35:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 04:35:51,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 04:35:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 04:35:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 04:35:51,165 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 94 [2020-10-13 04:35:51,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:51,166 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 04:35:51,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:35:51,166 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 04:35:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 04:35:51,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:51,167 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:51,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 04:35:51,168 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:51,168 INFO L82 PathProgramCache]: Analyzing trace with hash -650078689, now seen corresponding path program 18 times [2020-10-13 04:35:51,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:51,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79620573] [2020-10-13 04:35:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:51,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:51,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:51,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:51,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:56,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:56,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 04:35:56,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:56,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:35:56,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:35:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 04:35:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:35:56,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:56,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:56,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:56,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:56,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:56,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:56,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:56,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:56,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:56,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:56,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:35:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:56,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:56,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:56,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:56,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:56,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:56,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:35:56,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:56,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:56,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:35:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:56,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:56,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:56,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:56,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:56,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:35:56,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:56,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:35:56,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:35:56,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:35:56,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:56,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 04:35:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:56,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:56,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:56,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:56,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:56,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:56,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:35:56,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:56,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 88 proven. 124 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-13 04:35:56,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79620573] [2020-10-13 04:35:56,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:56,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:35:56,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010677553] [2020-10-13 04:35:56,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:35:56,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:56,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:35:56,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:35:56,348 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 10 states. [2020-10-13 04:35:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:56,514 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-10-13 04:35:56,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:35:56,515 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2020-10-13 04:35:56,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:56,517 INFO L225 Difference]: With dead ends: 107 [2020-10-13 04:35:56,517 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 04:35:56,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:35:56,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 04:35:56,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 04:35:56,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 04:35:56,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 04:35:56,522 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 96 [2020-10-13 04:35:56,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:56,522 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 04:35:56,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:35:56,523 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 04:35:56,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 04:35:56,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:56,524 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:56,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 04:35:56,524 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:56,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:56,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1317136387, now seen corresponding path program 19 times [2020-10-13 04:35:56,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:56,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302937699] [2020-10-13 04:35:56,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:56,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:56,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:56,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:56,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:01,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:01,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 04:36:01,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 04:36:01,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:01,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:36:01,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 04:36:01,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:36:01,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:01,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:01,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:01,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:01,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:01,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:01,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:01,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:01,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:01,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:01,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:01,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:01,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:36:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:01,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:01,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:01,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:01,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:36:01,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:01,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:36:01,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:01,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:01,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 04:36:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:01,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:01,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:01,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:01,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:36:01,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:01,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:36:01,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:01,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:01,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:01,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:01,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:01,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 04:36:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:01,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:01,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:01,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:01,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:36:01,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:01,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:36:01,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:01,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:01,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:36:01,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:01,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-13 04:36:01,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302937699] [2020-10-13 04:36:01,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:01,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:36:01,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699950901] [2020-10-13 04:36:01,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:36:01,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:01,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:36:01,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:36:01,686 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 11 states. [2020-10-13 04:36:01,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:01,800 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-10-13 04:36:01,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:36:01,800 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-13 04:36:01,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:01,801 INFO L225 Difference]: With dead ends: 93 [2020-10-13 04:36:01,801 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 04:36:01,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:36:01,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 04:36:01,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 04:36:01,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 04:36:01,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 04:36:01,811 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 102 [2020-10-13 04:36:01,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:01,813 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 04:36:01,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:36:01,813 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 04:36:01,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 04:36:01,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:01,814 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 8, 8, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:01,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 04:36:01,814 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:01,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:01,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1879450363, now seen corresponding path program 20 times [2020-10-13 04:36:01,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:01,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512446843] [2020-10-13 04:36:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:01,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:01,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:01,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:01,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:06,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:06,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 04:36:06,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:06,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 04:36:06,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:06,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:36:06,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:36:06,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:36:06,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:06,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:06,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:06,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:06,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:06,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:06,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:06,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:06,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:06,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:06,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:06,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:06,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:36:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:06,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:06,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:06,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:06,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:36:06,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:06,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:36:06,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:36:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:06,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:06,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 04:36:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:06,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:06,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:06,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:36:06,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:06,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:36:06,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:06,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:06,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:36:06,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:06,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:06,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 04:36:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:06,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:06,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:06,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:36:06,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:06,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:36:06,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:06,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:06,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:36:06,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:06,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2020-10-13 04:36:06,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512446843] [2020-10-13 04:36:06,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:06,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:36:06,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126242026] [2020-10-13 04:36:06,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:36:06,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:06,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:36:06,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:36:06,969 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 11 states. [2020-10-13 04:36:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:07,074 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-13 04:36:07,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:36:07,074 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-13 04:36:07,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:07,075 INFO L225 Difference]: With dead ends: 116 [2020-10-13 04:36:07,076 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 04:36:07,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:36:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 04:36:07,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 04:36:07,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 04:36:07,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 04:36:07,081 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 104 [2020-10-13 04:36:07,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:07,081 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 04:36:07,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:36:07,081 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 04:36:07,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 04:36:07,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:07,083 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:07,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 04:36:07,083 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:07,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1266330973, now seen corresponding path program 21 times [2020-10-13 04:36:07,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:07,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606883059] [2020-10-13 04:36:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:07,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:07,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:07,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:07,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:12,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:12,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 04:36:12,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:12,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:36:12,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:36:12,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 04:36:12,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:36:12,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:12,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:12,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:12,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:12,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:12,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:12,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:12,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:12,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:36:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:12,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:12,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:12,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:12,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:36:12,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:12,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:36:12,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:12,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:12,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 04:36:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:12,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:12,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:12,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:36:12,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:12,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:36:12,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:12,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:36:12,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:36:12,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:36:12,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:12,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 04:36:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:12,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:12,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:12,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:12,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:36:12,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:12,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:36:12,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:12,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:12,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:36:12,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:12,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 116 proven. 165 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-13 04:36:12,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606883059] [2020-10-13 04:36:12,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:12,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:36:12,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708863382] [2020-10-13 04:36:12,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:36:12,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:12,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:36:12,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:36:12,243 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 11 states. [2020-10-13 04:36:12,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:12,435 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-13 04:36:12,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:36:12,435 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 106 [2020-10-13 04:36:12,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:12,436 INFO L225 Difference]: With dead ends: 117 [2020-10-13 04:36:12,436 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 04:36:12,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:36:12,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 04:36:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 04:36:12,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 04:36:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 04:36:12,441 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 106 [2020-10-13 04:36:12,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:12,442 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 04:36:12,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:36:12,442 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 04:36:12,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 04:36:12,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:12,443 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:12,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 04:36:12,443 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:12,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:12,443 INFO L82 PathProgramCache]: Analyzing trace with hash -278698053, now seen corresponding path program 22 times [2020-10-13 04:36:12,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:12,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91775055] [2020-10-13 04:36:12,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:12,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:12,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:12,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:12,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:17,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:17,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 04:36:17,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:17,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 04:36:17,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:17,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:36:17,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 04:36:17,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:36:17,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:17,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:17,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:17,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:17,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:17,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:17,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:17,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:17,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:17,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:36:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:17,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:17,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:17,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:17,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:17,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:36:17,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:36:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:36:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:36:17,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:17,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 04:36:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:17,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:17,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:17,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:17,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:17,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:17,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:36:17,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:17,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:17,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:36:17,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:17,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:17,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 04:36:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:17,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:17,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:17,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:17,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:17,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:36:17,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:36:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:17,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2020-10-13 04:36:17,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91775055] [2020-10-13 04:36:17,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:17,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:36:17,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673850661] [2020-10-13 04:36:17,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:36:17,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:17,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:36:17,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:36:17,644 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 04:36:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:17,842 INFO L93 Difference]: Finished difference Result 121 states and 131 transitions. [2020-10-13 04:36:17,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:36:17,843 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-13 04:36:17,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:17,844 INFO L225 Difference]: With dead ends: 121 [2020-10-13 04:36:17,844 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 04:36:17,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 04:36:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 04:36:17,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 04:36:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 04:36:17,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 04:36:17,849 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-13 04:36:17,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:17,850 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 04:36:17,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:36:17,850 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 04:36:17,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 04:36:17,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:17,851 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:17,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 04:36:17,851 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:17,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:17,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1486168985, now seen corresponding path program 23 times [2020-10-13 04:36:17,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:17,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434526805] [2020-10-13 04:36:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:17,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:17,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:17,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:18,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:22,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:22,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 04:36:22,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:22,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:36:22,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:36:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:36:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:36:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:22,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:22,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:22,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:22,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:22,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:22,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:22,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:22,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:22,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:36:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:22,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:22,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:22,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:22,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:22,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:22,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:36:22,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:22,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:22,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:22,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:22,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:22,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 04:36:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:22,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:22,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:22,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:22,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:22,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:22,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:36:23,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:23,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:23,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:23,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:23,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:23,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 04:36:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:23,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:23,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:23,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:23,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:36:23,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:23,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2020-10-13 04:36:23,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434526805] [2020-10-13 04:36:23,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:23,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:36:23,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607079324] [2020-10-13 04:36:23,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:36:23,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:23,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:36:23,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:36:23,035 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 12 states. [2020-10-13 04:36:23,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:23,150 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2020-10-13 04:36:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:36:23,151 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 118 [2020-10-13 04:36:23,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:23,152 INFO L225 Difference]: With dead ends: 126 [2020-10-13 04:36:23,152 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 04:36:23,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:36:23,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 04:36:23,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 04:36:23,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 04:36:23,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 04:36:23,159 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 118 [2020-10-13 04:36:23,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:23,160 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 04:36:23,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:36:23,160 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 04:36:23,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 04:36:23,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:23,161 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:23,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 04:36:23,161 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:23,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:23,162 INFO L82 PathProgramCache]: Analyzing trace with hash -967910789, now seen corresponding path program 24 times [2020-10-13 04:36:23,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:23,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806965033] [2020-10-13 04:36:23,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:23,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:23,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:23,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:23,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:28,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:28,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 04:36:28,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:28,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:36:28,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:36:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 04:36:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:36:28,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:28,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:28,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:28,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:28,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:28,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:28,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:28,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:28,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:28,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:36:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:28,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:28,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:28,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:28,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:28,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:36:28,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:28,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:28,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:36:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:28,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:28,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:28,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:28,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:28,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:28,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:36:28,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:28,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:28,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:28,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:28,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:28,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 04:36:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:28,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:28,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:28,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:28,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:28,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:28,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:36:28,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:28,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:28,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:28,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:28,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:28,351 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2020-10-13 04:36:28,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806965033] [2020-10-13 04:36:28,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:28,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:36:28,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065177516] [2020-10-13 04:36:28,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:36:28,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:28,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:36:28,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:36:28,353 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 12 states. [2020-10-13 04:36:28,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:28,468 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-13 04:36:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:36:28,469 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-13 04:36:28,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:28,470 INFO L225 Difference]: With dead ends: 107 [2020-10-13 04:36:28,470 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 04:36:28,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:36:28,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 04:36:28,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 04:36:28,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 04:36:28,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 04:36:28,478 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 120 [2020-10-13 04:36:28,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:28,479 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 04:36:28,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:36:28,479 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 04:36:28,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 04:36:28,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:28,480 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:28,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 04:36:28,481 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:28,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:28,481 INFO L82 PathProgramCache]: Analyzing trace with hash -953070087, now seen corresponding path program 25 times [2020-10-13 04:36:28,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:28,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710705061] [2020-10-13 04:36:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:28,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:28,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:28,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:28,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:33,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:33,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 04:36:33,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:33,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:36:33,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:36:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 04:36:33,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:36:33,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:33,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:33,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:33,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:33,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:33,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:33,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:33,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:33,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:33,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:33,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:36:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:33,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:33,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:33,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:33,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:33,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:36:33,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:33,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:36:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:36:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:36:33,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:33,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:36:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:33,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:33,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:33,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:33,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:33,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:36:33,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:33,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:33,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:33,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:33,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 04:36:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:33,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:33,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:33,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:33,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:33,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:33,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:36:33,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:33,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:33,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:33,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:33,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2020-10-13 04:36:33,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710705061] [2020-10-13 04:36:33,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:33,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:36:33,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850624015] [2020-10-13 04:36:33,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:36:33,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:33,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:36:33,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:36:33,681 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 13 states. [2020-10-13 04:36:33,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:33,923 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2020-10-13 04:36:33,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:36:33,923 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 04:36:33,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:33,924 INFO L225 Difference]: With dead ends: 131 [2020-10-13 04:36:33,924 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 04:36:33,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 04:36:33,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 04:36:33,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 04:36:33,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 04:36:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 04:36:33,931 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 122 [2020-10-13 04:36:33,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:33,931 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 04:36:33,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:36:33,931 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 04:36:33,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 04:36:33,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:33,932 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:33,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 04:36:33,933 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:33,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:33,933 INFO L82 PathProgramCache]: Analyzing trace with hash -246005161, now seen corresponding path program 26 times [2020-10-13 04:36:33,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:33,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905636174] [2020-10-13 04:36:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:33,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:33,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:33,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:33,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:38,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:38,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 04:36:38,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 04:36:38,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:36:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 04:36:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:36:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:39,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:39,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:39,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:39,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:39,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:39,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:39,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:39,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:39,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:39,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:39,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:36:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:39,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:39,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:39,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:39,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:39,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 04:36:39,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:39,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:39,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 04:36:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:39,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:39,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:39,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:39,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:39,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:39,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:36:39,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:39,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:39,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:39,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:39,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:39,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 04:36:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:39,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:39,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:39,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:39,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:39,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:39,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:36:39,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:39,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:39,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:39,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2020-10-13 04:36:39,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905636174] [2020-10-13 04:36:39,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:39,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:36:39,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243046749] [2020-10-13 04:36:39,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:36:39,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:39,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:36:39,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:36:39,187 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 13 states. [2020-10-13 04:36:39,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:39,297 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2020-10-13 04:36:39,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:36:39,297 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 128 [2020-10-13 04:36:39,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:39,298 INFO L225 Difference]: With dead ends: 113 [2020-10-13 04:36:39,299 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 04:36:39,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:36:39,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 04:36:39,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 04:36:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 04:36:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 04:36:39,305 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-13 04:36:39,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:39,306 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 04:36:39,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:36:39,306 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 04:36:39,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 04:36:39,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:39,307 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:39,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 04:36:39,307 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:39,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:39,308 INFO L82 PathProgramCache]: Analyzing trace with hash 618378965, now seen corresponding path program 27 times [2020-10-13 04:36:39,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:39,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420544768] [2020-10-13 04:36:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:39,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:39,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:39,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:39,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:44,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:44,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 04:36:44,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:44,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:36:44,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:36:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:36:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:36:44,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:44,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:44,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:44,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:44,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:44,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:44,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:44,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:44,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:44,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:36:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:44,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:44,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:44,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:44,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:44,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:44,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:36:44,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:44,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:44,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:44,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:44,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:44,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 04:36:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:44,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:44,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:44,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:44,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:44,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:44,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:36:44,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:44,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:44,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:44,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:44,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:44,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 04:36:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:44,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:44,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:44,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:44,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:44,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:44,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:36:44,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:44,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 04:36:44,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420544768] [2020-10-13 04:36:44,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:44,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:36:44,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180392833] [2020-10-13 04:36:44,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:36:44,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:44,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:36:44,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:36:44,513 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 13 states. [2020-10-13 04:36:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:44,620 INFO L93 Difference]: Finished difference Result 140 states and 148 transitions. [2020-10-13 04:36:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:36:44,621 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-13 04:36:44,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:44,622 INFO L225 Difference]: With dead ends: 140 [2020-10-13 04:36:44,622 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 04:36:44,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:36:44,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 04:36:44,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 04:36:44,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 04:36:44,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 04:36:44,628 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 130 [2020-10-13 04:36:44,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:44,628 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 04:36:44,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:36:44,628 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 04:36:44,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 04:36:44,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:44,629 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:44,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 04:36:44,630 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:44,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:44,630 INFO L82 PathProgramCache]: Analyzing trace with hash 2069899959, now seen corresponding path program 28 times [2020-10-13 04:36:44,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:44,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429565244] [2020-10-13 04:36:44,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:44,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:44,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:44,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:44,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:49,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:49,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 04:36:49,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:49,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:36:49,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:49,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:36:49,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:36:49,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:36:49,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:49,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:49,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:49,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:49,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:49,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:49,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:49,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:49,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:36:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:49,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:49,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:49,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:49,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:49,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:49,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:36:49,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:49,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:49,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 04:36:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:49,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:49,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:49,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:49,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:49,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:36:49,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:49,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:49,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 04:36:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:49,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:49,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:49,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:49,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:49,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:49,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:36:49,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:49,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:49,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:49,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:49,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:49,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 04:36:49,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429565244] [2020-10-13 04:36:49,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:49,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:36:49,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335114560] [2020-10-13 04:36:49,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:36:49,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:49,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:36:49,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:36:49,844 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 14 states. [2020-10-13 04:36:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:49,936 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2020-10-13 04:36:49,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:36:49,937 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-13 04:36:49,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:49,938 INFO L225 Difference]: With dead ends: 142 [2020-10-13 04:36:49,938 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 04:36:49,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:36:49,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 04:36:49,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 04:36:49,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 04:36:49,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 04:36:49,948 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 132 [2020-10-13 04:36:49,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:49,948 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 04:36:49,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:36:49,948 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 04:36:49,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 04:36:49,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:49,949 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 11, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:49,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 04:36:49,950 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:49,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:49,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1117203993, now seen corresponding path program 29 times [2020-10-13 04:36:49,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:49,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532678311] [2020-10-13 04:36:49,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:49,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:50,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:50,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:50,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:54,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:54,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 04:36:54,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:54,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 04:36:54,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:36:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 04:36:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:36:54,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:55,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:55,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:55,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:55,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:55,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:55,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:55,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:55,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:55,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:36:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:55,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:55,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:55,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:55,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:55,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 04:36:55,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:55,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 04:36:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:55,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:55,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:55,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:55,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:55,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:55,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:36:55,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:55,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:55,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:55,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:55,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:55,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 04:36:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:55,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:55,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:55,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:55,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:55,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:55,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 04:36:55,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:55,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:55,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:55,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:55,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1096 trivial. 0 not checked. [2020-10-13 04:36:55,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532678311] [2020-10-13 04:36:55,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:55,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:36:55,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542268738] [2020-10-13 04:36:55,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:36:55,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:55,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:36:55,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:36:55,198 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 14 states. [2020-10-13 04:36:55,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:55,292 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-13 04:36:55,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:36:55,293 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 134 [2020-10-13 04:36:55,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:55,294 INFO L225 Difference]: With dead ends: 119 [2020-10-13 04:36:55,294 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 04:36:55,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:36:55,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 04:36:55,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 04:36:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 04:36:55,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 04:36:55,300 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 134 [2020-10-13 04:36:55,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:55,301 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 04:36:55,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:36:55,301 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 04:36:55,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 04:36:55,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:55,302 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:55,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 04:36:55,302 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:55,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:55,303 INFO L82 PathProgramCache]: Analyzing trace with hash 697350679, now seen corresponding path program 30 times [2020-10-13 04:36:55,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:55,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615823658] [2020-10-13 04:36:55,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:55,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:55,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:55,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:00,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:00,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 04:37:00,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:00,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 04:37:00,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:00,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:37:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 04:37:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:37:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:00,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:00,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:00,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:00,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:00,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:00,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:00,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:00,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:00,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:00,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:00,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:00,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:37:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:00,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:00,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:00,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:37:00,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:00,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:37:00,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:37:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:37:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:37:00,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:00,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 04:37:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:00,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:00,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:00,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:00,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:37:00,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:00,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:37:00,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:00,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:00,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:37:00,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:00,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:00,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 04:37:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:00,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:00,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:00,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:37:00,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:37:00,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:37:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:00,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:00,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2020-10-13 04:37:00,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615823658] [2020-10-13 04:37:00,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:00,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:37:00,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289297534] [2020-10-13 04:37:00,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:37:00,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:00,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:37:00,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:37:00,550 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 14 states. [2020-10-13 04:37:00,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:00,811 INFO L93 Difference]: Finished difference Result 147 states and 157 transitions. [2020-10-13 04:37:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:37:00,811 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 136 [2020-10-13 04:37:00,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:00,812 INFO L225 Difference]: With dead ends: 147 [2020-10-13 04:37:00,813 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 04:37:00,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 04:37:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 04:37:00,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 04:37:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 04:37:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 04:37:00,818 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 136 [2020-10-13 04:37:00,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:00,819 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 04:37:00,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:37:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 04:37:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 04:37:00,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:00,820 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:00,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 04:37:00,820 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:00,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:00,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1521459723, now seen corresponding path program 31 times [2020-10-13 04:37:00,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:00,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257200747] [2020-10-13 04:37:00,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:00,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:00,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:00,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:01,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:05,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:05,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 04:37:05,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:05,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:37:05,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:37:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:37:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:37:05,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:05,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:05,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:05,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:05,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:05,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:05,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:05,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:05,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:05,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:37:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:05,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:05,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:05,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:05,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:05,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:05,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:37:05,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:05,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:05,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:37:05,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:05,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:05,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 04:37:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:05,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:05,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:06,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:06,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:06,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:06,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:37:06,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:06,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:37:06,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:06,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:06,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 04:37:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:06,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:06,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:06,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:06,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:06,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:06,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:37:06,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:37:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:06,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 04:37:06,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257200747] [2020-10-13 04:37:06,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:06,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:37:06,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757103329] [2020-10-13 04:37:06,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:37:06,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:06,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:37:06,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:37:06,071 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 15 states. [2020-10-13 04:37:06,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:06,199 INFO L93 Difference]: Finished difference Result 152 states and 160 transitions. [2020-10-13 04:37:06,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:37:06,200 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 142 [2020-10-13 04:37:06,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:06,201 INFO L225 Difference]: With dead ends: 152 [2020-10-13 04:37:06,201 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 04:37:06,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:37:06,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 04:37:06,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 04:37:06,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 04:37:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 04:37:06,208 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 142 [2020-10-13 04:37:06,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:06,208 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 04:37:06,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:37:06,208 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 04:37:06,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 04:37:06,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:06,209 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 12, 12, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:06,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 04:37:06,210 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:06,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:06,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1049882921, now seen corresponding path program 32 times [2020-10-13 04:37:06,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:06,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321293482] [2020-10-13 04:37:06,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:06,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:06,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:06,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:06,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:11,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:11,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 04:37:11,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 04:37:11,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:11,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:37:11,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 04:37:11,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:37:11,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:11,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:11,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:11,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:11,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:11,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:11,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:37:11,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:11,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:11,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:37:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:11,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:11,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:11,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:11,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:11,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:37:11,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:11,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:11,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:11,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:11,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:11,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 04:37:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:11,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:11,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:11,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:11,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:11,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:11,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:37:11,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:11,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:11,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 04:37:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:11,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:11,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:11,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:11,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:11,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:37:11,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:37:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:11,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1314 trivial. 0 not checked. [2020-10-13 04:37:11,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321293482] [2020-10-13 04:37:11,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:11,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:37:11,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476212407] [2020-10-13 04:37:11,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:37:11,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:11,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:37:11,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:37:11,464 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 15 states. [2020-10-13 04:37:11,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:11,549 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2020-10-13 04:37:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:37:11,549 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 144 [2020-10-13 04:37:11,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:11,550 INFO L225 Difference]: With dead ends: 127 [2020-10-13 04:37:11,550 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 04:37:11,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:37:11,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 04:37:11,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 04:37:11,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 04:37:11,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 04:37:11,555 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 144 [2020-10-13 04:37:11,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:11,555 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 04:37:11,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:37:11,556 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 04:37:11,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 04:37:11,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:11,557 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:11,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 04:37:11,557 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:11,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:11,557 INFO L82 PathProgramCache]: Analyzing trace with hash -599004331, now seen corresponding path program 33 times [2020-10-13 04:37:11,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:11,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202214564] [2020-10-13 04:37:11,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:11,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:11,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:11,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:11,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:16,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:16,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 04:37:16,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:16,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 04:37:16,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:37:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 04:37:16,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:37:16,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:16,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:16,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:16,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:16,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:16,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:16,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:16,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:16,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:16,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:37:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:16,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:16,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:16,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:16,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:16,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:16,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:37:16,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:16,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:16,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 04:37:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:16,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:16,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:16,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:16,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:16,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:37:16,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:16,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:37:16,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:37:16,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:37:16,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:16,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 04:37:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:16,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:16,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:16,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:16,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:16,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:16,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:37:16,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:37:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 268 proven. 389 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2020-10-13 04:37:16,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202214564] [2020-10-13 04:37:16,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:16,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:37:16,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819679665] [2020-10-13 04:37:16,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:37:16,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:16,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:37:16,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:37:16,823 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 15 states. [2020-10-13 04:37:17,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:17,097 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2020-10-13 04:37:17,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:37:17,097 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 146 [2020-10-13 04:37:17,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:17,099 INFO L225 Difference]: With dead ends: 157 [2020-10-13 04:37:17,099 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 04:37:17,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-13 04:37:17,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 04:37:17,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 04:37:17,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 04:37:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 04:37:17,105 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 146 [2020-10-13 04:37:17,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:17,106 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 04:37:17,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:37:17,106 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 04:37:17,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 04:37:17,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:17,107 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:17,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 04:37:17,107 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:17,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:17,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1800030131, now seen corresponding path program 34 times [2020-10-13 04:37:17,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:17,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221308843] [2020-10-13 04:37:17,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:17,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:17,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:17,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:22,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:22,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 04:37:22,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:22,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 04:37:22,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:22,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:37:22,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 04:37:22,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:37:22,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:22,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:22,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:22,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:22,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:22,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:22,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:22,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:22,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:22,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:22,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:22,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:22,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:37:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:22,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:22,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:22,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:22,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:22,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:22,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 04:37:22,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:22,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:22,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:22,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:22,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:22,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 04:37:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:22,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:22,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:22,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:22,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:22,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:22,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:37:22,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:22,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:22,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:22,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:22,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:22,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 04:37:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:22,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:22,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:22,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:22,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:22,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:22,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:37:22,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:22,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:22,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:37:22,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:22,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2020-10-13 04:37:22,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221308843] [2020-10-13 04:37:22,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:22,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:37:22,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391086267] [2020-10-13 04:37:22,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:37:22,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:22,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:37:22,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:37:22,423 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 16 states. [2020-10-13 04:37:22,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:22,560 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-10-13 04:37:22,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:37:22,560 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-10-13 04:37:22,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:22,562 INFO L225 Difference]: With dead ends: 133 [2020-10-13 04:37:22,562 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 04:37:22,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:37:22,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 04:37:22,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 04:37:22,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 04:37:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 04:37:22,568 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 152 [2020-10-13 04:37:22,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:22,568 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 04:37:22,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:37:22,569 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 04:37:22,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 04:37:22,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:22,570 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 13, 13, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:22,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 04:37:22,570 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:22,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:22,570 INFO L82 PathProgramCache]: Analyzing trace with hash 609805617, now seen corresponding path program 35 times [2020-10-13 04:37:22,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:22,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672245607] [2020-10-13 04:37:22,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:22,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:22,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:22,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:27,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:27,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 04:37:27,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:27,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:37:27,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:37:27,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 04:37:27,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:37:27,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:27,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:27,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:27,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:27,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:27,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:27,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:27,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:27,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:27,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:27,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:37:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:27,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:27,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:27,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:27,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:27,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:27,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:37:27,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:27,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:27,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 04:37:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:27,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:27,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:27,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:27,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:37:27,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:37:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:37:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:37:27,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:27,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 04:37:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:27,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:27,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:27,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:27,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:27,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:37:27,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:37:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 316 proven. 460 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2020-10-13 04:37:27,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672245607] [2020-10-13 04:37:27,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:27,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:37:27,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66885356] [2020-10-13 04:37:27,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:37:27,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:27,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:37:27,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:37:27,848 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 16 states. [2020-10-13 04:37:28,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:28,167 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2020-10-13 04:37:28,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:37:28,167 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 154 [2020-10-13 04:37:28,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:28,168 INFO L225 Difference]: With dead ends: 165 [2020-10-13 04:37:28,168 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 04:37:28,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-13 04:37:28,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 04:37:28,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 04:37:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 04:37:28,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 04:37:28,175 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 154 [2020-10-13 04:37:28,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:28,175 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 04:37:28,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:37:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 04:37:28,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 04:37:28,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:28,176 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:28,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 04:37:28,177 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:28,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:28,177 INFO L82 PathProgramCache]: Analyzing trace with hash 394546063, now seen corresponding path program 36 times [2020-10-13 04:37:28,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:28,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126614334] [2020-10-13 04:37:28,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:28,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:28,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:28,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:28,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:33,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:33,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 04:37:33,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:33,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 04:37:33,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:37:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:37:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:37:33,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:33,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:33,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:33,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:33,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:33,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:33,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:33,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:33,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:33,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:37:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:33,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:33,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:33,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:37:33,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:37:33,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:37:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:33,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:33,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 04:37:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:33,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:33,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:33,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:33,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:37:33,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:33,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 04:37:33,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:37:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:33,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:33,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 04:37:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:33,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:33,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:33,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:33,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:37:33,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:33,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:37:33,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:33,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:33,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:37:33,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:33,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1927 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-13 04:37:33,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126614334] [2020-10-13 04:37:33,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:33,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:37:33,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412183507] [2020-10-13 04:37:33,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:37:33,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:33,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:37:33,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:37:33,475 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 16 states. [2020-10-13 04:37:33,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:33,607 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2020-10-13 04:37:33,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:37:33,607 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 160 [2020-10-13 04:37:33,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:33,608 INFO L225 Difference]: With dead ends: 170 [2020-10-13 04:37:33,608 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 04:37:33,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:37:33,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 04:37:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 04:37:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 04:37:33,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 04:37:33,614 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 160 [2020-10-13 04:37:33,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:33,614 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 04:37:33,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:37:33,614 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 04:37:33,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 04:37:33,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:33,615 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:33,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 04:37:33,616 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:33,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:33,616 INFO L82 PathProgramCache]: Analyzing trace with hash 914245617, now seen corresponding path program 37 times [2020-10-13 04:37:33,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:33,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392587464] [2020-10-13 04:37:33,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:33,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:33,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:38,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:38,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 04:37:38,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 04:37:38,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:37:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-13 04:37:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:37:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:38,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:38,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:38,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:38,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:38,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:38,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:38,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:38,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:38,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:38,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:38,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:38,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:37:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:38,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:38,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:38,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:38,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:37:38,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 04:37:38,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:38,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:38,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 04:37:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:38,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:38,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:38,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:37:38,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:38,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:37:38,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:37:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:37:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:37:38,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:38,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 04:37:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:38,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:38,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:38,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:37:38,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:38,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:37:38,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:37:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:38,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 368 proven. 537 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2020-10-13 04:37:38,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392587464] [2020-10-13 04:37:38,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:38,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:37:38,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460285486] [2020-10-13 04:37:38,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:37:38,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:38,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:37:38,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:37:38,924 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 17 states. [2020-10-13 04:37:39,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:39,278 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2020-10-13 04:37:39,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:37:39,278 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 162 [2020-10-13 04:37:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:39,279 INFO L225 Difference]: With dead ends: 171 [2020-10-13 04:37:39,279 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 04:37:39,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 04:37:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 04:37:39,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 04:37:39,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 04:37:39,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 04:37:39,285 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 162 [2020-10-13 04:37:39,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:39,286 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 04:37:39,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:37:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 04:37:39,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 04:37:39,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:39,288 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:39,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 04:37:39,291 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:39,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:39,292 INFO L82 PathProgramCache]: Analyzing trace with hash -593961393, now seen corresponding path program 38 times [2020-10-13 04:37:39,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:39,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130634203] [2020-10-13 04:37:39,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:39,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:39,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:44,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:44,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 04:37:44,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:44,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:37:44,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:44,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:37:44,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 04:37:44,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:37:44,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:44,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:44,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:44,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:44,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:44,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:44,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:44,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:44,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:44,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:37:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:44,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:44,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:44,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:44,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:44,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 04:37:44,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:44,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:44,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 04:37:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:44,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:44,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:44,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:44,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:44,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 04:37:44,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:44,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:44,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 04:37:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:44,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:44,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:44,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:44,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:44,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:44,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:37:44,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:37:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:44,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2201 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2032 trivial. 0 not checked. [2020-10-13 04:37:44,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130634203] [2020-10-13 04:37:44,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:44,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:37:44,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063455998] [2020-10-13 04:37:44,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:37:44,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:44,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:37:44,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:37:44,613 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 17 states. [2020-10-13 04:37:44,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:44,756 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2020-10-13 04:37:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:37:44,756 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 168 [2020-10-13 04:37:44,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:44,757 INFO L225 Difference]: With dead ends: 145 [2020-10-13 04:37:44,757 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 04:37:44,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:37:44,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 04:37:44,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 04:37:44,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 04:37:44,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 04:37:44,763 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 168 [2020-10-13 04:37:44,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:44,763 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 04:37:44,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:37:44,763 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 04:37:44,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 04:37:44,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:44,766 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:44,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 04:37:44,766 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:44,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:44,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1305040077, now seen corresponding path program 39 times [2020-10-13 04:37:44,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:44,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287535343] [2020-10-13 04:37:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:44,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:44,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:44,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:45,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:49,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 04:37:49,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:49,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 04:37:49,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:37:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:37:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:37:49,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:49,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:49,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:49,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:49,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:49,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:49,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:49,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:49,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:37:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:49,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:49,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:49,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:49,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:37:49,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:37:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:49,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 04:37:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:49,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:50,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:50,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:50,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:50,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:37:50,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:37:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:50,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:50,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 04:37:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:50,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:50,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:50,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:50,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:50,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:50,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:37:50,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:37:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:50,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 04:37:50,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287535343] [2020-10-13 04:37:50,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:50,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:37:50,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982813106] [2020-10-13 04:37:50,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:37:50,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:50,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:37:50,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:37:50,070 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 17 states. [2020-10-13 04:37:50,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:50,178 INFO L93 Difference]: Finished difference Result 180 states and 188 transitions. [2020-10-13 04:37:50,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:37:50,179 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 170 [2020-10-13 04:37:50,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:50,180 INFO L225 Difference]: With dead ends: 180 [2020-10-13 04:37:50,180 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 04:37:50,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:37:50,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 04:37:50,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 04:37:50,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 04:37:50,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 04:37:50,187 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 170 [2020-10-13 04:37:50,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:50,187 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 04:37:50,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:37:50,187 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 04:37:50,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 04:37:50,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:50,189 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:50,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 04:37:50,191 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:50,191 INFO L82 PathProgramCache]: Analyzing trace with hash -385565009, now seen corresponding path program 40 times [2020-10-13 04:37:50,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:50,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976692342] [2020-10-13 04:37:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:50,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:50,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:50,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:50,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:55,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 04:37:55,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:55,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 04:37:55,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:37:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 04:37:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:37:55,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:55,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:55,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:55,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:55,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:55,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:55,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:55,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:55,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:55,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:55,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:55,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:37:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:55,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:55,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:55,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:55,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 04:37:55,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:55,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:55,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:55,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:55,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:55,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 04:37:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:55,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:55,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:55,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 04:37:55,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:55,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 04:37:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:55,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:55,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:55,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:55,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:37:55,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:55,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:55,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:37:55,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:55,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:55,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 04:37:55,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976692342] [2020-10-13 04:37:55,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:55,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:37:55,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712284858] [2020-10-13 04:37:55,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:37:55,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:55,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:37:55,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:37:55,548 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 18 states. [2020-10-13 04:37:55,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:55,682 INFO L93 Difference]: Finished difference Result 149 states and 154 transitions. [2020-10-13 04:37:55,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:37:55,683 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2020-10-13 04:37:55,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:55,684 INFO L225 Difference]: With dead ends: 149 [2020-10-13 04:37:55,684 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 04:37:55,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:37:55,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 04:37:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-13 04:37:55,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 04:37:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-13 04:37:55,691 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 172 [2020-10-13 04:37:55,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:55,692 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-13 04:37:55,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:37:55,692 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-13 04:37:55,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 04:37:55,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:55,693 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 15, 15, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:55,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 04:37:55,694 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:55,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:55,694 INFO L82 PathProgramCache]: Analyzing trace with hash -289497811, now seen corresponding path program 41 times [2020-10-13 04:37:55,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:55,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760900691] [2020-10-13 04:37:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:55,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:56,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:00,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 04:38:00,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:38:00,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:38:00,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:38:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 04:38:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:38:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:00,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:38:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:00,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:00,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:38:00,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:38:00,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:38:00,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:00,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:00,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:38:00,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:00,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:00,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:38:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:00,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:00,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:38:00,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:38:00,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:38:00,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:00,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:38:00,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:38:00,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:38:00,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:00,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 04:38:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:00,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:00,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:38:00,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:00,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 04:38:00,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:00,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:00,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:38:00,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:00,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:00,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 04:38:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:00,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:01,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:01,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:01,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:38:01,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:01,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:38:01,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:38:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:01,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2284 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2020-10-13 04:38:01,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760900691] [2020-10-13 04:38:01,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:38:01,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:38:01,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522470814] [2020-10-13 04:38:01,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:38:01,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:38:01,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:38:01,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:38:01,040 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 18 states. [2020-10-13 04:38:01,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:38:01,374 INFO L93 Difference]: Finished difference Result 185 states and 195 transitions. [2020-10-13 04:38:01,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:38:01,374 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 174 [2020-10-13 04:38:01,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:38:01,376 INFO L225 Difference]: With dead ends: 185 [2020-10-13 04:38:01,376 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 04:38:01,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 04:38:01,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 04:38:01,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-13 04:38:01,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 04:38:01,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-13 04:38:01,382 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 174 [2020-10-13 04:38:01,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:38:01,382 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-13 04:38:01,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:38:01,383 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-13 04:38:01,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 04:38:01,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:38:01,384 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:38:01,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 04:38:01,384 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:38:01,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:38:01,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1194071179, now seen corresponding path program 42 times [2020-10-13 04:38:01,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:38:01,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267174086] [2020-10-13 04:38:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:38:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:01,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:01,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:01,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:01,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:06,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 04:38:06,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:38:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:38:06,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:38:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:38:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:38:06,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:06,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:38:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:06,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:06,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:38:06,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:38:06,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:38:06,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:06,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:06,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:38:06,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:06,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:06,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:38:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:06,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:06,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:06,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:06,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 04:38:06,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:06,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:06,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 04:38:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:06,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:06,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:06,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:06,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 04:38:06,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:06,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 04:38:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:06,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:06,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:06,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:06,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 04:38:06,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:06,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-13 04:38:06,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267174086] [2020-10-13 04:38:06,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:38:06,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:38:06,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737827056] [2020-10-13 04:38:06,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:38:06,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:38:06,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:38:06,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:38:06,761 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 18 states. [2020-10-13 04:38:06,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:38:06,885 INFO L93 Difference]: Finished difference Result 190 states and 198 transitions. [2020-10-13 04:38:06,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:38:06,885 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 180 [2020-10-13 04:38:06,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:38:06,887 INFO L225 Difference]: With dead ends: 190 [2020-10-13 04:38:06,887 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 04:38:06,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:38:06,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 04:38:06,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-13 04:38:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 04:38:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-10-13 04:38:06,893 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 180 [2020-10-13 04:38:06,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:38:06,893 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-10-13 04:38:06,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:38:06,894 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-10-13 04:38:06,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 04:38:06,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:38:06,894 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:38:06,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 04:38:06,895 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:38:06,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:38:06,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1814164499, now seen corresponding path program 43 times [2020-10-13 04:38:06,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:38:06,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931333918] [2020-10-13 04:38:06,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:38:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:06,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:07,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:11,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:11,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 04:38:11,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:38:11,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 04:38:11,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:11,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 04:38:11,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:38:11,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 04:38:11,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:12,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:38:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:12,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:12,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:12,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:38:12,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:38:12,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:38:12,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:38:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:12,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:38:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:12,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:12,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:12,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:12,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:12,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:12,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 04:38:12,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:12,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:12,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 04:38:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:12,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:12,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:12,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:12,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:12,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:12,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 04:38:12,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:12,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:12,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:12,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 04:38:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:12,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:12,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:12,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:12,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:12,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:12,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 04:38:12,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:12,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:12,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-13 04:38:12,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931333918] [2020-10-13 04:38:12,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:38:12,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 04:38:12,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121061539] [2020-10-13 04:38:12,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 04:38:12,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:38:12,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 04:38:12,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:38:12,270 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand 19 states. [2020-10-13 04:38:12,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:38:12,413 INFO L93 Difference]: Finished difference Result 192 states and 200 transitions. [2020-10-13 04:38:12,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 04:38:12,414 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 182 [2020-10-13 04:38:12,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:38:12,415 INFO L225 Difference]: With dead ends: 192 [2020-10-13 04:38:12,415 INFO L226 Difference]: Without dead ends: 116 [2020-10-13 04:38:12,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:38:12,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-13 04:38:12,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-13 04:38:12,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 04:38:12,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2020-10-13 04:38:12,420 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 182 [2020-10-13 04:38:12,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:38:12,420 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2020-10-13 04:38:12,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 04:38:12,421 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2020-10-13 04:38:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 04:38:12,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:38:12,422 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 16, 16, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:38:12,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 04:38:12,422 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:38:12,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:38:12,423 INFO L82 PathProgramCache]: Analyzing trace with hash 2079306447, now seen corresponding path program 44 times [2020-10-13 04:38:12,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:38:12,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396852787] [2020-10-13 04:38:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:38:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:12,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:12,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:13,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:17,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:17,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 04:38:17,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:38:17,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:38:17,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:17,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 04:38:17,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 04:38:17,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 04:38:17,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:17,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:38:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:17,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:17,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:17,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:38:17,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:38:17,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:38:17,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:38:17,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:17,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:17,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:38:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:17,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:17,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:17,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:17,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:17,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:17,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 04:38:17,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:17,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:17,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:38:17,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:17,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:17,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 04:38:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:17,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:17,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:17,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:17,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:38:17,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:38:17,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:17,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 04:38:17,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:38:17,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 04:38:17,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:17,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 04:38:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:17,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:17,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:17,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:17,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:17,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 04:38:17,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:17,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2611 backedges. 484 proven. 709 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2020-10-13 04:38:17,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396852787] [2020-10-13 04:38:17,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:38:17,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 04:38:17,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734015072] [2020-10-13 04:38:17,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 04:38:17,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:38:17,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 04:38:17,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:38:17,797 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand 19 states. [2020-10-13 04:38:18,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:38:18,218 INFO L93 Difference]: Finished difference Result 193 states and 203 transitions. [2020-10-13 04:38:18,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 04:38:18,219 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 184 [2020-10-13 04:38:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:38:18,220 INFO L225 Difference]: With dead ends: 193 [2020-10-13 04:38:18,220 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 04:38:18,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 04:38:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 04:38:18,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-13 04:38:18,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-13 04:38:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2020-10-13 04:38:18,230 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 184 [2020-10-13 04:38:18,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:38:18,231 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2020-10-13 04:38:18,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 04:38:18,231 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2020-10-13 04:38:18,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-13 04:38:18,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:38:18,232 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 16, 16, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:38:18,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 04:38:18,233 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:38:18,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:38:18,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1920587603, now seen corresponding path program 45 times [2020-10-13 04:38:18,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:38:18,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792065803] [2020-10-13 04:38:18,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:38:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:18,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:18,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:18,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:18,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking...