/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:54:48,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:54:48,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:54:48,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:54:48,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:54:48,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:54:48,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:54:48,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:54:48,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:54:48,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:54:48,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:54:48,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:54:48,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:54:48,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:54:48,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:54:48,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:54:48,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:54:48,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:54:48,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:54:48,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:54:48,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:54:48,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:54:48,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:54:48,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:54:48,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:54:48,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:54:48,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:54:48,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:54:48,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:54:48,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:54:48,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:54:48,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:54:48,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:54:48,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:54:48,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:54:48,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:54:48,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:54:48,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:54:48,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:54:48,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:54:48,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:54:48,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 14:54:48,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:54:48,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:54:48,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:54:48,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:54:48,266 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:54:48,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:54:48,266 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:54:48,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:54:48,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:54:48,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:54:48,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:54:48,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:54:48,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:54:48,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:54:48,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:54:48,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:54:48,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:54:48,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:54:48,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:54:48,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:54:48,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:54:48,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:54:48,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:54:48,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:54:48,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:54:48,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:54:48,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:54:48,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:54:48,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:54:48,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:54:48,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:54:48,608 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:54:48,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:54:48,613 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:54:48,614 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:54:48,615 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label07.c [2020-10-12 14:54:48,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f85e45d7/7a0e775157dd4bc8bc7781d6d94652dc/FLAGd017eb1c2 [2020-10-12 14:54:49,397 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:54:49,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label07.c [2020-10-12 14:54:49,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f85e45d7/7a0e775157dd4bc8bc7781d6d94652dc/FLAGd017eb1c2 [2020-10-12 14:54:49,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f85e45d7/7a0e775157dd4bc8bc7781d6d94652dc [2020-10-12 14:54:49,486 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:54:49,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:54:49,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:54:49,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:54:49,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:54:49,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:54:49" (1/1) ... [2020-10-12 14:54:49,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522f8f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:49, skipping insertion in model container [2020-10-12 14:54:49,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:54:49" (1/1) ... [2020-10-12 14:54:49,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:54:49,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:54:51,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:54:51,039 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:54:51,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:54:51,562 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:54:51,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:51 WrapperNode [2020-10-12 14:54:51,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:54:51,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:54:51,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:54:51,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:54:51,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:51" (1/1) ... [2020-10-12 14:54:51,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:51" (1/1) ... [2020-10-12 14:54:51,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:51" (1/1) ... [2020-10-12 14:54:51,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:51" (1/1) ... [2020-10-12 14:54:51,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:51" (1/1) ... [2020-10-12 14:54:51,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:51" (1/1) ... [2020-10-12 14:54:51,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:51" (1/1) ... [2020-10-12 14:54:51,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:54:51,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:54:51,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:54:51,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:54:51,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:54:52,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:54:52,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:54:52,009 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:54:52,009 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:54:52,010 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 14:54:52,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:54:52,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:54:52,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:54:52,012 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 14:54:52,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:54:52,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:54:52,012 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:54:52,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:54:52,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:54:52,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:54:58,834 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:54:58,835 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:54:58,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:54:58 BoogieIcfgContainer [2020-10-12 14:54:58,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:54:58,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:54:58,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:54:58,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:54:58,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:54:49" (1/3) ... [2020-10-12 14:54:58,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63190ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:54:58, skipping insertion in model container [2020-10-12 14:54:58,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:51" (2/3) ... [2020-10-12 14:54:58,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63190ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:54:58, skipping insertion in model container [2020-10-12 14:54:58,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:54:58" (3/3) ... [2020-10-12 14:54:58,861 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label07.c [2020-10-12 14:54:58,874 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:54:58,887 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:54:58,900 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:54:58,930 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:54:58,930 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:54:58,930 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:54:58,930 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:54:58,930 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:54:58,930 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:54:58,931 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:54:58,931 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:54:58,966 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-12 14:54:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 14:54:58,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:54:58,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:54:58,978 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:54:58,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:54:58,985 INFO L82 PathProgramCache]: Analyzing trace with hash 816833170, now seen corresponding path program 1 times [2020-10-12 14:54:58,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:54:58,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548530350] [2020-10-12 14:54:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:54:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:59,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:59,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:59,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 14:54:59,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:59,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-12 14:54:59,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:59,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:54:59,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:54:59,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 14:54:59,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:54:59,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:54:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:59,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:59,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:59,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:54:59,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:59,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 14:54:59,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:59,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:54:59,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:59,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:54:59,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:54:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:54:59,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548530350] [2020-10-12 14:54:59,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:54:59,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:54:59,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460273713] [2020-10-12 14:54:59,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:54:59,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:54:59,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:54:59,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:54:59,844 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-12 14:55:10,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:55:10,119 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-12 14:55:10,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:55:10,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-12 14:55:10,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:55:10,159 INFO L225 Difference]: With dead ends: 2270 [2020-10-12 14:55:10,159 INFO L226 Difference]: Without dead ends: 1432 [2020-10-12 14:55:10,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:55:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-12 14:55:10,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-12 14:55:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-12 14:55:10,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2331 transitions. [2020-10-12 14:55:10,350 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2331 transitions. Word has length 53 [2020-10-12 14:55:10,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:55:10,351 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2331 transitions. [2020-10-12 14:55:10,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:55:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2331 transitions. [2020-10-12 14:55:10,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 14:55:10,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:55:10,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:55:10,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:55:10,358 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:55:10,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:55:10,359 INFO L82 PathProgramCache]: Analyzing trace with hash 213346646, now seen corresponding path program 1 times [2020-10-12 14:55:10,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:55:10,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116556989] [2020-10-12 14:55:10,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:55:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:10,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:11,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:11,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 14:55:11,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:55:11,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-10-12 14:55:11,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:11,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:55:11,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:55:11,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 14:55:11,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 14:55:11,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:55:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:11,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:11,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:11,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:55:11,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:11,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:55:11,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:11,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:55:11,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:55:11,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:55:11,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:55:11,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:55:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:11,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:11,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:11,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 14:55:11,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 14:55:11,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:55:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:55:11,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 14:55:11,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 14:55:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:55:11,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116556989] [2020-10-12 14:55:11,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:55:11,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 14:55:11,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757619879] [2020-10-12 14:55:11,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:55:11,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:55:11,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:55:11,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:55:11,693 INFO L87 Difference]: Start difference. First operand 1425 states and 2331 transitions. Second operand 8 states. [2020-10-12 14:55:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:55:24,991 INFO L93 Difference]: Finished difference Result 5730 states and 9449 transitions. [2020-10-12 14:55:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:55:24,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-12 14:55:24,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:55:25,016 INFO L225 Difference]: With dead ends: 5730 [2020-10-12 14:55:25,016 INFO L226 Difference]: Without dead ends: 4311 [2020-10-12 14:55:25,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:55:25,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2020-10-12 14:55:25,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 4305. [2020-10-12 14:55:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4305 states. [2020-10-12 14:55:25,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4305 states to 4305 states and 5987 transitions. [2020-10-12 14:55:25,152 INFO L78 Accepts]: Start accepts. Automaton has 4305 states and 5987 transitions. Word has length 123 [2020-10-12 14:55:25,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:55:25,153 INFO L479 AbstractCegarLoop]: Abstraction has 4305 states and 5987 transitions. [2020-10-12 14:55:25,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:55:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand 4305 states and 5987 transitions. [2020-10-12 14:55:25,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 14:55:25,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:55:25,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:55:25,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:55:25,156 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:55:25,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:55:25,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1554239643, now seen corresponding path program 1 times [2020-10-12 14:55:25,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:55:25,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595691835] [2020-10-12 14:55:25,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:55:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:25,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:25,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:25,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:25,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 14:55:25,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:55:25,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-10-12 14:55:25,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:55:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:55:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 14:55:25,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:25,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:55:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:25,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:25,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:25,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:55:25,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:55:25,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:55:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:55:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:55:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:55:25,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:55:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:25,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:26,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:26,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:55:26,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:26,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 14:55:26,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:26,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:55:26,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:55:26,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:55:26,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:55:26,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595691835] [2020-10-12 14:55:26,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:55:26,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:55:26,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344762934] [2020-10-12 14:55:26,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:55:26,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:55:26,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:55:26,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:55:26,121 INFO L87 Difference]: Start difference. First operand 4305 states and 5987 transitions. Second operand 7 states. [2020-10-12 14:55:35,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:55:35,792 INFO L93 Difference]: Finished difference Result 10242 states and 14480 transitions. [2020-10-12 14:55:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:55:35,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-12 14:55:35,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:55:35,827 INFO L225 Difference]: With dead ends: 10242 [2020-10-12 14:55:35,827 INFO L226 Difference]: Without dead ends: 5943 [2020-10-12 14:55:35,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:55:35,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5943 states. [2020-10-12 14:55:36,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5943 to 5848. [2020-10-12 14:55:36,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5848 states. [2020-10-12 14:55:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5848 states to 5848 states and 7809 transitions. [2020-10-12 14:55:36,056 INFO L78 Accepts]: Start accepts. Automaton has 5848 states and 7809 transitions. Word has length 124 [2020-10-12 14:55:36,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:55:36,058 INFO L479 AbstractCegarLoop]: Abstraction has 5848 states and 7809 transitions. [2020-10-12 14:55:36,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:55:36,058 INFO L276 IsEmpty]: Start isEmpty. Operand 5848 states and 7809 transitions. [2020-10-12 14:55:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-12 14:55:36,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:55:36,070 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:55:36,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:55:36,071 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:55:36,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:55:36,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1520187857, now seen corresponding path program 1 times [2020-10-12 14:55:36,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:55:36,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929065815] [2020-10-12 14:55:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:55:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:36,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:36,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:37,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:37,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 14:55:37,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:55:37,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1291 [2020-10-12 14:55:37,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:55:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:55:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 14:55:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:55:37,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:55:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:37,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:37,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:37,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:55:37,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:37,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:55:37,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:37,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:55:37,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:55:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:55:37,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:37,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:55:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:37,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:37,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:37,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 14:55:37,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:37,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-12 14:55:37,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:55:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:55:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 14:55:37,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:55:37,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929065815] [2020-10-12 14:55:37,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:55:37,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:55:37,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477412792] [2020-10-12 14:55:37,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:55:37,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:55:37,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:55:37,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:55:37,964 INFO L87 Difference]: Start difference. First operand 5848 states and 7809 transitions. Second operand 7 states. [2020-10-12 14:55:49,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:55:49,443 INFO L93 Difference]: Finished difference Result 16287 states and 22897 transitions. [2020-10-12 14:55:49,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 14:55:49,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-10-12 14:55:49,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:55:49,499 INFO L225 Difference]: With dead ends: 16287 [2020-10-12 14:55:49,499 INFO L226 Difference]: Without dead ends: 10445 [2020-10-12 14:55:49,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:55:49,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10445 states. [2020-10-12 14:55:49,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10445 to 9529. [2020-10-12 14:55:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9529 states. [2020-10-12 14:55:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9529 states to 9529 states and 12028 transitions. [2020-10-12 14:55:49,802 INFO L78 Accepts]: Start accepts. Automaton has 9529 states and 12028 transitions. Word has length 150 [2020-10-12 14:55:49,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:55:49,803 INFO L479 AbstractCegarLoop]: Abstraction has 9529 states and 12028 transitions. [2020-10-12 14:55:49,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:55:49,804 INFO L276 IsEmpty]: Start isEmpty. Operand 9529 states and 12028 transitions. [2020-10-12 14:55:49,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-12 14:55:49,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:55:49,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:55:49,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:55:49,808 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:55:49,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:55:49,808 INFO L82 PathProgramCache]: Analyzing trace with hash 177904766, now seen corresponding path program 1 times [2020-10-12 14:55:49,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:55:49,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041518524] [2020-10-12 14:55:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:55:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:49,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:50,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:50,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-12 14:55:50,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:55:50,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1069 [2020-10-12 14:55:50,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:55:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:55:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 243 [2020-10-12 14:55:50,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:51,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:55:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:51,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:51,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:51,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:55:51,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:51,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:55:51,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:51,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:55:51,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:55:51,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:55:51,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:51,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:55:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:51,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:51,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:51,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 14:55:51,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:51,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-12 14:55:51,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:55:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:55:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-12 14:55:51,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:55:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:55:51,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041518524] [2020-10-12 14:55:51,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:55:51,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:55:51,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136644849] [2020-10-12 14:55:51,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:55:51,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:55:51,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:55:51,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:55:51,757 INFO L87 Difference]: Start difference. First operand 9529 states and 12028 transitions. Second operand 6 states. [2020-10-12 14:56:03,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:56:03,447 INFO L93 Difference]: Finished difference Result 21322 states and 26638 transitions. [2020-10-12 14:56:03,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:56:03,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 239 [2020-10-12 14:56:03,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:56:03,507 INFO L225 Difference]: With dead ends: 21322 [2020-10-12 14:56:03,507 INFO L226 Difference]: Without dead ends: 11799 [2020-10-12 14:56:03,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:56:03,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11799 states. [2020-10-12 14:56:03,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11799 to 11696. [2020-10-12 14:56:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11696 states. [2020-10-12 14:56:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11696 states to 11696 states and 14313 transitions. [2020-10-12 14:56:03,778 INFO L78 Accepts]: Start accepts. Automaton has 11696 states and 14313 transitions. Word has length 239 [2020-10-12 14:56:03,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:56:03,779 INFO L479 AbstractCegarLoop]: Abstraction has 11696 states and 14313 transitions. [2020-10-12 14:56:03,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:56:03,780 INFO L276 IsEmpty]: Start isEmpty. Operand 11696 states and 14313 transitions. [2020-10-12 14:56:03,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-12 14:56:03,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:56:03,791 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:56:03,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:56:03,791 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:56:03,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:56:03,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1314281923, now seen corresponding path program 1 times [2020-10-12 14:56:03,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:56:03,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230913706] [2020-10-12 14:56:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:56:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:03,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:04,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:04,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:06,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:06,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-12 14:56:06,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:56:06,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2277 [2020-10-12 14:56:06,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:56:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-12 14:56:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 14:56:06,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:06,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:56:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:06,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:06,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:06,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:56:06,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:56:06,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:06,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:06,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:56:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:06,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:06,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:06,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 14:56:06,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 14:56:06,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:06,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:06,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-12 14:56:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:06,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:06,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:06,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 14:56:06,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:06,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 14:56:06,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:06,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:56:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 14:56:06,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-12 14:56:06,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230913706] [2020-10-12 14:56:06,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:56:06,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:56:06,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053867373] [2020-10-12 14:56:06,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:56:06,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:56:06,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:56:06,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:56:06,762 INFO L87 Difference]: Start difference. First operand 11696 states and 14313 transitions. Second operand 5 states. [2020-10-12 14:56:18,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:56:18,616 INFO L93 Difference]: Finished difference Result 27774 states and 35736 transitions. [2020-10-12 14:56:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:56:18,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2020-10-12 14:56:18,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:56:18,680 INFO L225 Difference]: With dead ends: 27774 [2020-10-12 14:56:18,680 INFO L226 Difference]: Without dead ends: 16786 [2020-10-12 14:56:18,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:56:18,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16786 states. [2020-10-12 14:56:19,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16786 to 16045. [2020-10-12 14:56:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16045 states. [2020-10-12 14:56:19,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16045 states to 16045 states and 19780 transitions. [2020-10-12 14:56:19,116 INFO L78 Accepts]: Start accepts. Automaton has 16045 states and 19780 transitions. Word has length 336 [2020-10-12 14:56:19,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:56:19,119 INFO L479 AbstractCegarLoop]: Abstraction has 16045 states and 19780 transitions. [2020-10-12 14:56:19,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:56:19,119 INFO L276 IsEmpty]: Start isEmpty. Operand 16045 states and 19780 transitions. [2020-10-12 14:56:19,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-12 14:56:19,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:56:19,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:56:19,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:56:19,127 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:56:19,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:56:19,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1845494506, now seen corresponding path program 1 times [2020-10-12 14:56:19,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:56:19,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333029425] [2020-10-12 14:56:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:56:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:19,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:19,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:19,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:20,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:20,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-12 14:56:20,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:56:20,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1393 [2020-10-12 14:56:20,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:56:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-12 14:56:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 14:56:20,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:20,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:56:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:20,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:20,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:20,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:56:20,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:20,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:56:20,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:20,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:20,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:20,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:56:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:20,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:20,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:20,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 14:56:20,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:20,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 14:56:20,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:20,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:56:20,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:20,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-12 14:56:20,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:21,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-12 14:56:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:21,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:21,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:21,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 14:56:21,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:56:21,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-12 14:56:21,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:56:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:56:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 14:56:21,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:56:22,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333029425] [2020-10-12 14:56:22,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:56:22,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:56:22,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021817995] [2020-10-12 14:56:22,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:56:22,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:56:22,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:56:22,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:56:22,165 INFO L87 Difference]: Start difference. First operand 16045 states and 19780 transitions. Second operand 6 states. [2020-10-12 14:56:33,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:56:33,891 INFO L93 Difference]: Finished difference Result 30903 states and 38492 transitions. [2020-10-12 14:56:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:56:33,899 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 361 [2020-10-12 14:56:33,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:56:33,972 INFO L225 Difference]: With dead ends: 30903 [2020-10-12 14:56:33,972 INFO L226 Difference]: Without dead ends: 15396 [2020-10-12 14:56:34,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:56:34,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15396 states. [2020-10-12 14:56:34,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15396 to 15319. [2020-10-12 14:56:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15319 states. [2020-10-12 14:56:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15319 states to 15319 states and 17635 transitions. [2020-10-12 14:56:34,350 INFO L78 Accepts]: Start accepts. Automaton has 15319 states and 17635 transitions. Word has length 361 [2020-10-12 14:56:34,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:56:34,351 INFO L479 AbstractCegarLoop]: Abstraction has 15319 states and 17635 transitions. [2020-10-12 14:56:34,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:56:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 15319 states and 17635 transitions. [2020-10-12 14:56:34,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-12 14:56:34,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:56:34,364 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:56:34,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:56:34,365 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:56:34,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:56:34,365 INFO L82 PathProgramCache]: Analyzing trace with hash -923341967, now seen corresponding path program 1 times [2020-10-12 14:56:34,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:56:34,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049295573] [2020-10-12 14:56:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:56:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:34,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:34,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:34,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:39,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:39,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-12 14:56:39,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:56:39,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 14:56:39,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:56:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:56:39,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-12 14:56:39,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:39,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:56:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:39,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:39,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:39,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:56:39,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:39,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:56:39,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:56:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:39,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:56:39,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:39,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:56:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:39,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:40,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:40,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 14:56:40,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:40,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-12 14:56:40,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:56:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:56:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-12 14:56:40,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:40,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:56:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:40,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:40,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:40,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 14:56:40,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:40,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 14:56:40,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:40,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:56:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:56:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 14:56:40,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:40,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-12 14:56:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:40,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:40,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:40,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 14:56:40,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:40,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 14:56:40,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-12 14:56:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:40,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 92 proven. 117 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:56:41,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049295573] [2020-10-12 14:56:41,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:56:41,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:56:41,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741520214] [2020-10-12 14:56:41,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:56:41,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:56:41,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:56:41,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:56:41,503 INFO L87 Difference]: Start difference. First operand 15319 states and 17635 transitions. Second operand 8 states. [2020-10-12 14:56:53,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:56:53,510 INFO L93 Difference]: Finished difference Result 37393 states and 43944 transitions. [2020-10-12 14:56:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:56:53,511 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 482 [2020-10-12 14:56:53,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:56:53,573 INFO L225 Difference]: With dead ends: 37393 [2020-10-12 14:56:53,573 INFO L226 Difference]: Without dead ends: 22782 [2020-10-12 14:56:53,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:56:53,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22782 states. [2020-10-12 14:56:54,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22782 to 22024. [2020-10-12 14:56:54,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22024 states. [2020-10-12 14:56:54,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22024 states to 22024 states and 25565 transitions. [2020-10-12 14:56:54,060 INFO L78 Accepts]: Start accepts. Automaton has 22024 states and 25565 transitions. Word has length 482 [2020-10-12 14:56:54,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:56:54,060 INFO L479 AbstractCegarLoop]: Abstraction has 22024 states and 25565 transitions. [2020-10-12 14:56:54,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:56:54,061 INFO L276 IsEmpty]: Start isEmpty. Operand 22024 states and 25565 transitions. [2020-10-12 14:56:54,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2020-10-12 14:56:54,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:56:54,104 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:56:54,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:56:54,105 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:56:54,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:56:54,105 INFO L82 PathProgramCache]: Analyzing trace with hash 379196424, now seen corresponding path program 1 times [2020-10-12 14:56:54,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:56:54,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758903887] [2020-10-12 14:56:54,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:56:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:54,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:54,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:59,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:59,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1029 [2020-10-12 14:56:59,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:56:59,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-12 14:56:59,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:59,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:56:59,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-12 14:56:59,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-12 14:56:59,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:59,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:56:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:59,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:59,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:59,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:56:59,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:56:59,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:59,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:59,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:56:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:59,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:59,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:59,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 14:56:59,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:59,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 14:56:59,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:59,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:59,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:59,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:59,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:57:00,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:57:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:00,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:00,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:00,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 14:57:00,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:00,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 14:57:00,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:00,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:57:00,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 14:57:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:00,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:00,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:00,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 14:57:00,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:00,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:57:00,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:00,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:00,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:00,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 14:57:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:00,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:00,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:00,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 14:57:00,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:00,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 14:57:00,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:57:00,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:00,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-12 14:57:00,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:00,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:57:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:00,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:00,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:00,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 14:57:00,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:00,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 14:57:00,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:00,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:57:00,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:00,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 14:57:00,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:00,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 14:57:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:01,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:01,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:01,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 14:57:01,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:01,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 14:57:01,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:01,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:57:01,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:57:01,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 14:57:01,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 384 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-12 14:57:01,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758903887] [2020-10-12 14:57:01,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:57:01,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:57:01,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668780190] [2020-10-12 14:57:01,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:57:01,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:57:01,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:57:01,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:57:01,797 INFO L87 Difference]: Start difference. First operand 22024 states and 25565 transitions. Second operand 7 states. [2020-10-12 14:57:13,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:57:13,421 INFO L93 Difference]: Finished difference Result 50038 states and 59694 transitions. [2020-10-12 14:57:13,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:57:13,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1009 [2020-10-12 14:57:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:57:13,545 INFO L225 Difference]: With dead ends: 50038 [2020-10-12 14:57:13,545 INFO L226 Difference]: Without dead ends: 29432 [2020-10-12 14:57:13,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:57:13,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29432 states. [2020-10-12 14:57:14,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29432 to 28635. [2020-10-12 14:57:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28635 states. [2020-10-12 14:57:14,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28635 states to 28635 states and 33459 transitions. [2020-10-12 14:57:14,257 INFO L78 Accepts]: Start accepts. Automaton has 28635 states and 33459 transitions. Word has length 1009 [2020-10-12 14:57:14,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:57:14,261 INFO L479 AbstractCegarLoop]: Abstraction has 28635 states and 33459 transitions. [2020-10-12 14:57:14,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:57:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 28635 states and 33459 transitions. [2020-10-12 14:57:14,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2020-10-12 14:57:14,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:57:14,282 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:57:14,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:57:14,283 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:57:14,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:57:14,284 INFO L82 PathProgramCache]: Analyzing trace with hash -809843671, now seen corresponding path program 1 times [2020-10-12 14:57:14,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:57:14,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407325329] [2020-10-12 14:57:14,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:57:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:14,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:15,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:16,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:19,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:19,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1088 [2020-10-12 14:57:19,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:57:19,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-12 14:57:19,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:57:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-12 14:57:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:57:19,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:19,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:57:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:19,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:19,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:19,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:57:19,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:19,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:57:19,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:19,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:19,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:57:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:19,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:19,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:19,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 14:57:19,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:19,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 14:57:19,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:19,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:19,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:19,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:19,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:19,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:57:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:19,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:20,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:20,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 14:57:20,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:20,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 14:57:20,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:20,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:20,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:20,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 14:57:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:20,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:20,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:20,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 14:57:20,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:20,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:57:20,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:20,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:20,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 14:57:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:20,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:20,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:20,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 14:57:20,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:20,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 14:57:20,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:20,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:57:20,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:20,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-12 14:57:20,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:20,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:57:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:20,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:20,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:20,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 14:57:20,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:20,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 14:57:20,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:57:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 14:57:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:20,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 14:57:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:20,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:20,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:20,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 14:57:20,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 14:57:20,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:57:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:57:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 14:57:20,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:20,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-12 14:57:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:20,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:20,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:20,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 14:57:20,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:20,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 14:57:20,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:20,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:20,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-12 14:57:20,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:20,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:57:21,470 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 374 proven. 88 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2020-10-12 14:57:21,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407325329] [2020-10-12 14:57:21,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:57:21,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:57:21,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810382302] [2020-10-12 14:57:21,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:57:21,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:57:21,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:57:21,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:57:21,473 INFO L87 Difference]: Start difference. First operand 28635 states and 33459 transitions. Second operand 7 states. [2020-10-12 14:57:33,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:57:33,522 INFO L93 Difference]: Finished difference Result 72283 states and 87088 transitions. [2020-10-12 14:57:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:57:33,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1066 [2020-10-12 14:57:33,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:57:33,673 INFO L225 Difference]: With dead ends: 72283 [2020-10-12 14:57:33,673 INFO L226 Difference]: Without dead ends: 45066 [2020-10-12 14:57:33,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:57:33,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45066 states. [2020-10-12 14:57:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45066 to 45002. [2020-10-12 14:57:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45002 states. [2020-10-12 14:57:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45002 states to 45002 states and 52453 transitions. [2020-10-12 14:57:34,736 INFO L78 Accepts]: Start accepts. Automaton has 45002 states and 52453 transitions. Word has length 1066 [2020-10-12 14:57:34,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:57:34,737 INFO L479 AbstractCegarLoop]: Abstraction has 45002 states and 52453 transitions. [2020-10-12 14:57:34,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:57:34,738 INFO L276 IsEmpty]: Start isEmpty. Operand 45002 states and 52453 transitions. [2020-10-12 14:57:34,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1184 [2020-10-12 14:57:34,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:57:34,768 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:57:34,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:57:34,768 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:57:34,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:57:34,769 INFO L82 PathProgramCache]: Analyzing trace with hash -511510389, now seen corresponding path program 1 times [2020-10-12 14:57:34,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:57:34,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619766977] [2020-10-12 14:57:34,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:57:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:35,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:35,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:38,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:39,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:40,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:40,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1205 [2020-10-12 14:57:40,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:57:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-10-12 14:57:40,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:57:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 983 [2020-10-12 14:57:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-12 14:57:40,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:57:40,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:57:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:40,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:40,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:40,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:57:40,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:40,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:57:40,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:40,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:40,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:40,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:57:40,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:57:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:40,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:40,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:40,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 14:57:40,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:40,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-12 14:57:40,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:40,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:40,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:57:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:40,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:40,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 14:57:40,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:40,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 14:57:40,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:40,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:40,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:40,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:40,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:40,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 14:57:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:40,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:40,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:40,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 14:57:40,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:40,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:57:40,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:40,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:40,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:40,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:40,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:41,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 14:57:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:41,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:41,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:41,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-12 14:57:41,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:41,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 14:57:41,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:41,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:41,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:41,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:41,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:41,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:57:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:41,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:41,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:41,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 14:57:41,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:41,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:57:41,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:41,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:41,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:41,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:41,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:41,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-12 14:57:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:41,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:41,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:41,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 14:57:41,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:41,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 14:57:41,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:57:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 14:57:41,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:41,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-12 14:57:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:41,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:41,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:41,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-12 14:57:41,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:57:41,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 14:57:41,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:41,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:57:41,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:57:41,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-12 14:57:41,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 633 proven. 6 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2020-10-12 14:57:42,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619766977] [2020-10-12 14:57:42,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:57:42,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:57:42,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16588802] [2020-10-12 14:57:42,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:57:42,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:57:42,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:57:42,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:57:42,523 INFO L87 Difference]: Start difference. First operand 45002 states and 52453 transitions. Second operand 7 states. [2020-10-12 14:57:50,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:57:50,465 INFO L93 Difference]: Finished difference Result 88644 states and 103743 transitions. [2020-10-12 14:57:50,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 14:57:50,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1183 [2020-10-12 14:57:50,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:57:50,602 INFO L225 Difference]: With dead ends: 88644 [2020-10-12 14:57:50,602 INFO L226 Difference]: Without dead ends: 45060 [2020-10-12 14:57:50,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:57:50,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45060 states. [2020-10-12 14:57:51,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45060 to 43591. [2020-10-12 14:57:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43591 states. [2020-10-12 14:57:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43591 states to 43591 states and 49514 transitions. [2020-10-12 14:57:51,616 INFO L78 Accepts]: Start accepts. Automaton has 43591 states and 49514 transitions. Word has length 1183 [2020-10-12 14:57:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:57:51,617 INFO L479 AbstractCegarLoop]: Abstraction has 43591 states and 49514 transitions. [2020-10-12 14:57:51,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:57:51,618 INFO L276 IsEmpty]: Start isEmpty. Operand 43591 states and 49514 transitions. [2020-10-12 14:57:51,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1205 [2020-10-12 14:57:51,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:57:51,642 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:57:51,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:57:51,642 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:57:51,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:57:51,643 INFO L82 PathProgramCache]: Analyzing trace with hash 708632854, now seen corresponding path program 1 times [2020-10-12 14:57:51,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:57:51,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101091017] [2020-10-12 14:57:51,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:57:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:51,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:52,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:53,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:56,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:56,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:56,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1228 [2020-10-12 14:57:56,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:57:56,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5160 [2020-10-12 14:57:56,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:57:56,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 958 [2020-10-12 14:57:56,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 14:57:56,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:57,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:57:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:57,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:57,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:57,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:57:57,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:57,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:57:57,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:57,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:57,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:57,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:57,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:57,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:57:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:57,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:57,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:57,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 14:57:57,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:57,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 14:57:57,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:57,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:57,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:57:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:57,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:57,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:57,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 14:57:57,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:57,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 14:57:57,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:57,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:57,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 14:57:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:57,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:57,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:57,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 14:57:57,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:57,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:57:57,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:57,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:57,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 14:57:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:57,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:57,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:57,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-12 14:57:57,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:57,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 14:57:57,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:57,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:57,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:57,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:57,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:57,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:57:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:57,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:57,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:57,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 14:57:57,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:57,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 14:57:57,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:57,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:57,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-12 14:57:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:57,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:57,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:57,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 14:57:57,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:57,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 14:57:57,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:57:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 14:57:57,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:57,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 946 [2020-10-12 14:57:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:57,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:57,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:58,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:58,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 14:57:58,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:57:58,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-12 14:57:58,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:58,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:57:58,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:57:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 14:57:58,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:58,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1071 [2020-10-12 14:57:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:58,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:58,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:58,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 14:57:58,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:58,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 14:57:58,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-12 14:57:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:58,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:59,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1437 backedges. 590 proven. 87 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2020-10-12 14:57:59,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101091017] [2020-10-12 14:57:59,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:57:59,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 14:57:59,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635352884] [2020-10-12 14:57:59,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:57:59,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:57:59,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:57:59,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:57:59,789 INFO L87 Difference]: Start difference. First operand 43591 states and 49514 transitions. Second operand 10 states. [2020-10-12 14:57:59,986 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-12 14:58:00,350 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-12 14:58:00,485 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-12 14:58:04,047 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-10-12 14:58:04,403 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-12 14:58:04,549 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-12 14:58:08,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:58:08,826 INFO L93 Difference]: Finished difference Result 87372 states and 99293 transitions. [2020-10-12 14:58:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 14:58:08,827 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1204 [2020-10-12 14:58:08,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:58:08,935 INFO L225 Difference]: With dead ends: 87372 [2020-10-12 14:58:08,936 INFO L226 Difference]: Without dead ends: 43551 [2020-10-12 14:58:08,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-12 14:58:09,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43551 states. [2020-10-12 14:58:09,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43551 to 43468. [2020-10-12 14:58:09,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43468 states. [2020-10-12 14:58:09,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43468 states to 43468 states and 48953 transitions. [2020-10-12 14:58:09,551 INFO L78 Accepts]: Start accepts. Automaton has 43468 states and 48953 transitions. Word has length 1204 [2020-10-12 14:58:09,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:58:09,552 INFO L479 AbstractCegarLoop]: Abstraction has 43468 states and 48953 transitions. [2020-10-12 14:58:09,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:58:09,552 INFO L276 IsEmpty]: Start isEmpty. Operand 43468 states and 48953 transitions. [2020-10-12 14:58:09,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1259 [2020-10-12 14:58:09,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:58:09,582 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:58:09,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 14:58:09,582 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:58:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:58:09,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1545653922, now seen corresponding path program 1 times [2020-10-12 14:58:09,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:58:09,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144818607] [2020-10-12 14:58:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:58:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:58:09,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:10,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:12,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:13,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:13,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:14,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:14,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:58:14,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1282 [2020-10-12 14:58:14,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:58:14,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-12 14:58:14,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:58:14,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:58:14,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 983 [2020-10-12 14:58:14,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-12 14:58:14,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:58:15,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:58:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:58:15,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:15,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:58:15,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:58:15,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:58:15,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:58:15,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:58:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:58:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:58:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:58:15,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:58:15,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:58:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:58:15,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:15,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:58:15,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 14:58:15,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:58:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 14:58:15,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:58:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:58:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:58:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:58:15,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:58:15,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:58:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:58:15,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:15,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:58:15,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 14:58:15,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:58:15,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 14:58:15,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:58:15,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:58:15,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:58:15,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:58:15,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:58:15,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 14:58:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:58:15,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:15,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:58:15,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 14:58:15,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:58:15,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:58:15,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:58:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:58:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:58:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:58:15,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:58:15,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 14:58:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:58:15,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:15,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:58:15,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-12 14:58:15,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:58:15,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 14:58:15,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:58:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:58:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:58:15,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:58:15,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:58:15,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:58:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:58:15,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:15,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:58:15,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 14:58:15,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:58:15,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:58:15,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:58:15,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:58:15,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:58:15,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:58:15,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:58:15,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-12 14:58:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:58:15,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:15,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:58:15,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 14:58:15,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:58:15,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 14:58:15,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:58:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:58:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:58:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 14:58:15,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:58:15,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-12 14:58:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:58:15,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:15,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:15,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:58:15,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 14:58:15,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:58:15,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 14:58:15,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:58:15,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:58:15,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:58:15,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:58:15,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:58:15,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1052 [2020-10-12 14:58:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:58:15,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:58:16,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:58:16,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-12 14:58:16,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:58:16,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-12 14:58:16,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:58:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:58:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:58:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-12 14:58:16,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:58:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1556 backedges. 913 proven. 4 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2020-10-12 14:58:17,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144818607] [2020-10-12 14:58:17,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:58:17,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:58:17,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871268739] [2020-10-12 14:58:17,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:58:17,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:58:17,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:58:17,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:58:17,919 INFO L87 Difference]: Start difference. First operand 43468 states and 48953 transitions. Second operand 8 states.