/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:43:14,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:43:14,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:43:14,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:43:14,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:43:14,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:43:14,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:43:14,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:43:14,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:43:14,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:43:14,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:43:14,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:43:14,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:43:14,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:43:14,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:43:14,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:43:14,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:43:14,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:43:14,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:43:14,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:43:14,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:43:14,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:43:14,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:43:14,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:43:14,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:43:14,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:43:14,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:43:14,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:43:14,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:43:14,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:43:14,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:43:14,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:43:14,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:43:14,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:43:14,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:43:14,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:43:14,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:43:14,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:43:14,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:43:14,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:43:14,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:43:14,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:43:14,373 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:43:14,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:43:14,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:43:14,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:43:14,376 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:43:14,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:43:14,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:43:14,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:43:14,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:43:14,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:43:14,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:43:14,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:43:14,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:43:14,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:43:14,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:43:14,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:43:14,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:43:14,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:43:14,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:43:14,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:43:14,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:43:14,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:43:14,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:43:14,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:43:14,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:43:14,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:43:14,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:43:14,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:43:14,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:43:14,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:43:14,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:43:14,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:43:14,868 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:43:14,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:43:14,871 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:43:14,873 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-25 07:43:14,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fac76afcf/a6170a233cd4415e9aa2ebc99328664e/FLAGc861997b8 [2020-09-25 07:43:15,520 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:43:15,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-25 07:43:15,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fac76afcf/a6170a233cd4415e9aa2ebc99328664e/FLAGc861997b8 [2020-09-25 07:43:15,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fac76afcf/a6170a233cd4415e9aa2ebc99328664e [2020-09-25 07:43:15,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:43:15,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:43:15,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:43:15,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:43:15,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:43:15,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:43:15" (1/1) ... [2020-09-25 07:43:15,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ccc0f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:15, skipping insertion in model container [2020-09-25 07:43:15,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:43:15" (1/1) ... [2020-09-25 07:43:15,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:43:15,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:43:16,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:43:16,178 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:43:16,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:43:16,220 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:43:16,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:16 WrapperNode [2020-09-25 07:43:16,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:43:16,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:43:16,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:43:16,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:43:16,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:16" (1/1) ... [2020-09-25 07:43:16,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:16" (1/1) ... [2020-09-25 07:43:16,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:16" (1/1) ... [2020-09-25 07:43:16,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:16" (1/1) ... [2020-09-25 07:43:16,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:16" (1/1) ... [2020-09-25 07:43:16,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:16" (1/1) ... [2020-09-25 07:43:16,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:16" (1/1) ... [2020-09-25 07:43:16,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:43:16,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:43:16,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:43:16,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:43:16,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:43:16,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:43:16,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:43:16,419 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 07:43:16,419 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:43:16,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:43:16,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:43:16,419 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 07:43:16,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:43:16,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:43:16,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:43:16,636 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:43:16,637 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 07:43:16,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:43:16 BoogieIcfgContainer [2020-09-25 07:43:16,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:43:16,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:43:16,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:43:16,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:43:16,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:43:15" (1/3) ... [2020-09-25 07:43:16,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bd63d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:43:16, skipping insertion in model container [2020-09-25 07:43:16,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:16" (2/3) ... [2020-09-25 07:43:16,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bd63d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:43:16, skipping insertion in model container [2020-09-25 07:43:16,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:43:16" (3/3) ... [2020-09-25 07:43:16,655 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2020-09-25 07:43:16,668 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:43:16,678 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:43:16,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:43:16,749 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:43:16,750 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:43:16,750 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:43:16,750 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:43:16,750 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:43:16,751 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:43:16,751 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:43:16,751 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:43:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-25 07:43:16,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 07:43:16,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:16,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:16,783 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:16,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:16,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1379859160, now seen corresponding path program 1 times [2020-09-25 07:43:16,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:16,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573243983] [2020-09-25 07:43:16,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:17,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:17,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:17,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 07:43:17,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:17,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 07:43:17,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:17,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:17,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:17,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 07:43:17,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:43:17,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:43:17,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:17,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:17,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:17,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:17,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:17,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:17,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:17,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:17,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:17,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:17,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:17,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:43:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:17,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:17,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:17,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:17,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:17,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 07:43:17,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:17,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:43:17,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:43:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:43:17,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573243983] [2020-09-25 07:43:17,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:43:17,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:43:17,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100204492] [2020-09-25 07:43:17,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:43:17,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:17,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:43:17,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:43:17,677 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 7 states. [2020-09-25 07:43:17,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:17,871 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 07:43:17,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:43:17,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-25 07:43:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:17,889 INFO L225 Difference]: With dead ends: 50 [2020-09-25 07:43:17,889 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 07:43:17,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:43:17,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 07:43:17,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 07:43:17,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 07:43:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 07:43:17,962 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-09-25 07:43:17,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:17,962 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 07:43:17,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:43:17,963 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 07:43:17,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 07:43:17,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:17,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:17,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:43:17,966 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:17,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:17,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2056866127, now seen corresponding path program 1 times [2020-09-25 07:43:17,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:17,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338378300] [2020-09-25 07:43:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:17,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:18,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 07:43:18,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 07:43:18,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:18,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 07:43:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:43:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:18,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:18,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:18,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:18,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:18,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:18,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:18,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:18,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:18,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:18,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:18,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:43:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:18,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:18,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:18,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:18,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:43:18,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:18,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:18,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:18,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:43:18,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338378300] [2020-09-25 07:43:18,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:43:18,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:43:18,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748205914] [2020-09-25 07:43:18,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:43:18,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:18,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:43:18,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:43:18,287 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-09-25 07:43:18,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:18,438 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-09-25 07:43:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:43:18,439 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-25 07:43:18,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:18,440 INFO L225 Difference]: With dead ends: 39 [2020-09-25 07:43:18,441 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 07:43:18,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:43:18,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 07:43:18,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-09-25 07:43:18,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 07:43:18,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 07:43:18,451 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2020-09-25 07:43:18,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:18,452 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 07:43:18,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:43:18,452 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 07:43:18,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 07:43:18,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:18,454 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:18,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:43:18,455 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:18,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:18,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1274124978, now seen corresponding path program 1 times [2020-09-25 07:43:18,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:18,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091831186] [2020-09-25 07:43:18,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:18,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:18,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 07:43:18,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:18,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-09-25 07:43:18,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:18,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:43:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:43:18,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:18,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:18,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:18,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:18,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:18,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:18,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:18,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:18,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:18,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:18,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:43:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:18,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:19,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:19,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 07:43:19,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:19,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 07:43:19,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:19,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:43:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:43:19,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:19,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:43:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:19,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:19,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:19,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:19,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:19,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:43:19,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:19,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:19,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:43:19,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:19,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:43:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:19,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:19,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:19,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:19,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:19,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:43:19,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:19,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:19,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:19,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:43:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 07:43:19,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091831186] [2020-09-25 07:43:19,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:19,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:43:19,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774331584] [2020-09-25 07:43:19,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:43:19,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:19,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:43:19,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:43:19,102 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-09-25 07:43:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:19,187 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2020-09-25 07:43:19,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:43:19,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 07:43:19,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:19,189 INFO L225 Difference]: With dead ends: 55 [2020-09-25 07:43:19,189 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 07:43:19,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:43:19,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 07:43:19,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 07:43:19,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 07:43:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-09-25 07:43:19,198 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2020-09-25 07:43:19,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:19,199 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-09-25 07:43:19,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:43:19,199 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-09-25 07:43:19,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 07:43:19,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:19,201 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:19,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:43:19,202 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:19,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:19,202 INFO L82 PathProgramCache]: Analyzing trace with hash -2043121517, now seen corresponding path program 1 times [2020-09-25 07:43:19,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:19,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802385410] [2020-09-25 07:43:19,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:19,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:19,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 07:43:20,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:20,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-09-25 07:43:20,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:43:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 07:43:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:43:20,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:20,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:20,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:20,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:20,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:20,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:43:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:43:20,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:20,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 07:43:20,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 07:43:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:43:20,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:20,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:43:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:20,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:20,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:43:20,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:20,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:20,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:20,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:43:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:20,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:20,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:43:20,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:20,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:20,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:43:20,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:20,458 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 07:43:20,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802385410] [2020-09-25 07:43:20,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:20,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 07:43:20,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927663041] [2020-09-25 07:43:20,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 07:43:20,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:20,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 07:43:20,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:43:20,461 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 12 states. [2020-09-25 07:43:20,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:20,823 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-09-25 07:43:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:43:20,824 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-09-25 07:43:20,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:20,828 INFO L225 Difference]: With dead ends: 51 [2020-09-25 07:43:20,828 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 07:43:20,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-09-25 07:43:20,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 07:43:20,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-09-25 07:43:20,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 07:43:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-09-25 07:43:20,847 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 37 [2020-09-25 07:43:20,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:20,847 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-09-25 07:43:20,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 07:43:20,848 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-09-25 07:43:20,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 07:43:20,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:20,852 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:20,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:43:20,853 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:20,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:20,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1985616609, now seen corresponding path program 1 times [2020-09-25 07:43:20,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:20,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095455091] [2020-09-25 07:43:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:21,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:21,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:21,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:21,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:22,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:25,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:25,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:25,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 07:43:25,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:43:25,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:43:25,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:25,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:43:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 07:43:25,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:43:25,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:25,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:25,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:25,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:25,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:25,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:25,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:25,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:25,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:25,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:43:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:25,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:25,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:25,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:26,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:26,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:26,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:26,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 07:43:27,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:43:27,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1188 [2020-09-25 07:43:27,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:43:27,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 07:43:27,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:43:27,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:43:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:27,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:27,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:43:27,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:27,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:27,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:43:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:43:27,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:43:27,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-09-25 07:43:27,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:27,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:27,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:43:27,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:43:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:27,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:27,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:43:27,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:27,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:43:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:27,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:27,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:43:27,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:27,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:27,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:43:27,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,657 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 07:43:27,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095455091] [2020-09-25 07:43:27,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:27,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:43:27,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725152619] [2020-09-25 07:43:27,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:43:27,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:27,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:43:27,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:43:27,660 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 9 states. [2020-09-25 07:43:27,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:27,828 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2020-09-25 07:43:27,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:43:27,829 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-09-25 07:43:27,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:27,831 INFO L225 Difference]: With dead ends: 76 [2020-09-25 07:43:27,831 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 07:43:27,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:43:27,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 07:43:27,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 07:43:27,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 07:43:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-09-25 07:43:27,842 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 56 [2020-09-25 07:43:27,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:27,843 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-09-25 07:43:27,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:43:27,843 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-09-25 07:43:27,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 07:43:27,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:27,845 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:27,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:43:27,846 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:27,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:27,846 INFO L82 PathProgramCache]: Analyzing trace with hash 847598467, now seen corresponding path program 2 times [2020-09-25 07:43:27,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:27,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043765769] [2020-09-25 07:43:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:28,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:28,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:31,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:31,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 07:43:31,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:43:31,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3796 [2020-09-25 07:43:31,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:31,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:43:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:31,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:43:31,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:31,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:31,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:31,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:31,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:31,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:31,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:31,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:31,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:31,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:31,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:31,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:31,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:43:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:31,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:31,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:31,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:32,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:32,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 07:43:32,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:43:32,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-09-25 07:43:32,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:32,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:43:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:43:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:43:32,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:32,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:43:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:32,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:32,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:32,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:32,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:43:33,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:43:33,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 07:43:33,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:43:33,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:43:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:33,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:33,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 07:43:33,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:33,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:43:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:33,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:43:33,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:43:33,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:43:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:33,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:43:33,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:33,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:33,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:43:33,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,258 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 07:43:33,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043765769] [2020-09-25 07:43:33,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:33,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:43:33,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856099822] [2020-09-25 07:43:33,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:43:33,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:33,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:43:33,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:43:33,263 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 10 states. [2020-09-25 07:43:33,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:33,403 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2020-09-25 07:43:33,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:43:33,404 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-09-25 07:43:33,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:33,406 INFO L225 Difference]: With dead ends: 79 [2020-09-25 07:43:33,406 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 07:43:33,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-09-25 07:43:33,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 07:43:33,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 07:43:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 07:43:33,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-09-25 07:43:33,422 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 54 [2020-09-25 07:43:33,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:33,423 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-09-25 07:43:33,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:43:33,424 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-09-25 07:43:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 07:43:33,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:33,427 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:33,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:43:33,432 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:33,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:33,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1275966376, now seen corresponding path program 3 times [2020-09-25 07:43:33,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:33,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105465072] [2020-09-25 07:43:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:38,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:38,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 07:43:38,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:43:38,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:43:38,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:38,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 07:43:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 07:43:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 07:43:38,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:38,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:38,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:38,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:38,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:38,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:38,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:38,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:38,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:38,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:43:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:38,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:38,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:38,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:42,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 07:43:42,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:43:42,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3861 [2020-09-25 07:43:42,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:42,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:42,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 07:43:42,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:42,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 07:43:42,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:42,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:43:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:42,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:42,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:43:42,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:42,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 07:43:42,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:42,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:43:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:43:42,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:42,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:43:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:42,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:42,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:42,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:42,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:43:42,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:42,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:43:42,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:42,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:43:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:42,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:42,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:42,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:42,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:43:42,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:42,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:42,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:42,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:42,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:43:42,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:42,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:43:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:42,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:42,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:42,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:42,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:43:42,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:42,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:42,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:43:42,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 07:43:42,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105465072] [2020-09-25 07:43:42,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:42,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 07:43:42,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512316676] [2020-09-25 07:43:42,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 07:43:42,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:42,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 07:43:42,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-25 07:43:42,684 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 14 states. [2020-09-25 07:43:43,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:43,082 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-09-25 07:43:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 07:43:43,083 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-09-25 07:43:43,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:43,085 INFO L225 Difference]: With dead ends: 63 [2020-09-25 07:43:43,085 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 07:43:43,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-09-25 07:43:43,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 07:43:43,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-09-25 07:43:43,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 07:43:43,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-09-25 07:43:43,094 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 55 [2020-09-25 07:43:43,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:43,094 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-09-25 07:43:43,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 07:43:43,095 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-09-25 07:43:43,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 07:43:43,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:43,096 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:43,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:43:43,097 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:43,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:43,097 INFO L82 PathProgramCache]: Analyzing trace with hash -778718797, now seen corresponding path program 4 times [2020-09-25 07:43:43,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:43,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75039098] [2020-09-25 07:43:43,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:43,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:43,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:43,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:43,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:43,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:43,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:43,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:45,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:48,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:48,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 07:43:48,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:43:48,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:43:48,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:48,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:43:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 07:43:48,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 07:43:48,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:48,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:48,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:48,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:48,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:48,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:48,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:48,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:48,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:48,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:43:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:48,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:48,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:48,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:48,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:48,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:48,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:48,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:53,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 07:43:53,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:43:53,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:43:53,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:53,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:43:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 07:43:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 07:43:53,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:53,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:43:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:53,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:43:53,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:53,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 07:43:53,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:53,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:43:53,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:53,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:43:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:53,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:53,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:53,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:53,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:43:53,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:53,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:53,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:53,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:53,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:53,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:43:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:53,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:53,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:53,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:53,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:43:53,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:53,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:53,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:53,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:43:53,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:53,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:43:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:55,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:55,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 07:43:55,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:43:55,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2355 [2020-09-25 07:43:55,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:55,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:55,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:43:55,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:55,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 07:43:55,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:55,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:43:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:55,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:55,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:55,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:56,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:56,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:43:56,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:43:56,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-09-25 07:43:56,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:56,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:43:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:56,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:43:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:56,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:56,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:56,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:56,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:56,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:56,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 07:43:56,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:56,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:56,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:56,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:43:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:56,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:56,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:56,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:56,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:56,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:43:56,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:56,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:43:56,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:56,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:43:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:56,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:56,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:56,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:56,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:56,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:43:56,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:56,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:56,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:43:56,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:56,245 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 79 proven. 77 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-25 07:43:56,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75039098] [2020-09-25 07:43:56,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:56,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 07:43:56,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307780300] [2020-09-25 07:43:56,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 07:43:56,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:56,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 07:43:56,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:43:56,249 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 11 states. [2020-09-25 07:43:56,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:56,442 INFO L93 Difference]: Finished difference Result 100 states and 127 transitions. [2020-09-25 07:43:56,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:43:56,443 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 90 [2020-09-25 07:43:56,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:56,445 INFO L225 Difference]: With dead ends: 100 [2020-09-25 07:43:56,445 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 07:43:56,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:43:56,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 07:43:56,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-09-25 07:43:56,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 07:43:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-09-25 07:43:56,458 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 90 [2020-09-25 07:43:56,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:56,459 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-09-25 07:43:56,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 07:43:56,459 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-09-25 07:43:56,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 07:43:56,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:56,461 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:56,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:43:56,461 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:56,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:56,462 INFO L82 PathProgramCache]: Analyzing trace with hash 237402259, now seen corresponding path program 5 times [2020-09-25 07:43:56,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:56,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906754197] [2020-09-25 07:43:56,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:56,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:56,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:56,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:56,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:58,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:58,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:58,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:59,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:59,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:01,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:01,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:01,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:01,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 07:44:01,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 07:44:01,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:44:01,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:01,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 07:44:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 07:44:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 07:44:01,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:01,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:44:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:01,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:01,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:01,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:44:01,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:01,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:44:01,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:01,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:01,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:01,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:01,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:01,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:01,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:44:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:01,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:01,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:01,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:01,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:01,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:02,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:02,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:05,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:05,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:05,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:06,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:06,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 07:44:06,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:44:06,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:44:06,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:06,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:44:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 07:44:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 07:44:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:06,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:06,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:06,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:06,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:07,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:07,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 07:44:07,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:44:07,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1322 [2020-09-25 07:44:07,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:07,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:07,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:44:07,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:07,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 07:44:07,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:07,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:07,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:07,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:44:07,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:44:07,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:07,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:44:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:44:07,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:07,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:44:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:07,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:07,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:07,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:44:07,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:07,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:44:07,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:07,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:07,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:07,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:44:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:07,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:07,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:07,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:44:07,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:07,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:44:07,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:07,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:07,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:07,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:07,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:07,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:07,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:44:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:07,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:07,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:07,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:44:07,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:07,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:44:07,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:07,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:07,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:44:07,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:07,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:44:07,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:07,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:44:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:08,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:08,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:08,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:08,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:08,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:09,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:09,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:09,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:09,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:09,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking...