/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_7-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:54:45,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:54:45,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:54:45,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:54:45,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:54:45,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:54:45,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:54:45,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:54:45,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:54:45,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:54:45,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:54:45,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:54:45,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:54:45,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:54:45,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:54:45,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:54:45,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:54:45,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:54:45,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:54:45,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:54:45,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:54:45,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:54:45,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:54:45,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:54:45,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:54:45,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:54:45,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:54:45,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:54:45,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:54:45,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:54:45,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:54:45,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:54:45,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:54:45,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:54:45,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:54:45,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:54:45,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:54:45,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:54:45,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:54:45,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:54:45,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:54:45,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:54:45,229 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:54:45,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:54:45,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:54:45,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:54:45,232 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:54:45,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:54:45,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:54:45,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:54:45,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:54:45,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:54:45,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:54:45,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:54:45,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:54:45,235 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:54:45,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:54:45,236 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:54:45,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:54:45,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:54:45,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:54:45,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:54:45,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:54:45,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:54:45,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:54:45,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:54:45,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:54:45,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:54:45,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:54:45,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:54:45,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:54:45,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 00:54:45,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:54:45,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:54:45,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:54:45,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:54:45,708 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:54:45,709 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-09-25 00:54:45,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80ae31de2/a8f6218c1da646338f52ff361f07612d/FLAGcb0ece100 [2020-09-25 00:54:46,321 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:54:46,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-09-25 00:54:46,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80ae31de2/a8f6218c1da646338f52ff361f07612d/FLAGcb0ece100 [2020-09-25 00:54:46,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80ae31de2/a8f6218c1da646338f52ff361f07612d [2020-09-25 00:54:46,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:54:46,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:54:46,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:54:46,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:54:46,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:54:46,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:54:46" (1/1) ... [2020-09-25 00:54:46,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:46, skipping insertion in model container [2020-09-25 00:54:46,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:54:46" (1/1) ... [2020-09-25 00:54:46,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:54:46,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:54:46,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:54:46,945 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:54:46,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:54:46,978 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:54:46,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:46 WrapperNode [2020-09-25 00:54:46,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:54:46,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:54:46,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:54:46,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:54:46,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:46" (1/1) ... [2020-09-25 00:54:46,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:46" (1/1) ... [2020-09-25 00:54:47,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:46" (1/1) ... [2020-09-25 00:54:47,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:46" (1/1) ... [2020-09-25 00:54:47,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:46" (1/1) ... [2020-09-25 00:54:47,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:46" (1/1) ... [2020-09-25 00:54:47,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:46" (1/1) ... [2020-09-25 00:54:47,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:54:47,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:54:47,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:54:47,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:54:47,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:54:47,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:54:47,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:54:47,179 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 00:54:47,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:54:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:54:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:54:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 00:54:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:54:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:54:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:54:47,468 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:54:47,468 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:54:47,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:54:47 BoogieIcfgContainer [2020-09-25 00:54:47,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:54:47,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:54:47,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:54:47,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:54:47,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:54:46" (1/3) ... [2020-09-25 00:54:47,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:54:47, skipping insertion in model container [2020-09-25 00:54:47,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:46" (2/3) ... [2020-09-25 00:54:47,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:54:47, skipping insertion in model container [2020-09-25 00:54:47,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:54:47" (3/3) ... [2020-09-25 00:54:47,498 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-2.c [2020-09-25 00:54:47,509 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:54:47,519 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:54:47,542 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:54:47,571 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:54:47,571 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:54:47,572 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:54:47,572 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:54:47,572 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:54:47,572 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:54:47,572 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:54:47,572 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:54:47,592 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 00:54:47,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 00:54:47,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:47,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:47,602 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:47,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:47,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 00:54:47,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:47,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787378329] [2020-09-25 00:54:47,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:47,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:47,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:47,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:47,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:54:47,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:47,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 00:54:47,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 00:54:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:47,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:54:48,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:48,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:48,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:48,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:48,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:48,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:48,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:48,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:48,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:48,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:48,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:48,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:48,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:48,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:48,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:54:48,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:48,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:54:48,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:54:48,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:54:48,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787378329] [2020-09-25 00:54:48,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:54:48,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:54:48,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843652712] [2020-09-25 00:54:48,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:54:48,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:48,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:54:48,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:54:48,100 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 00:54:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:48,207 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 00:54:48,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:54:48,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 00:54:48,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:48,223 INFO L225 Difference]: With dead ends: 44 [2020-09-25 00:54:48,223 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 00:54:48,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:54:48,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 00:54:48,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 00:54:48,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 00:54:48,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 00:54:48,279 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 00:54:48,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:48,279 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 00:54:48,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:54:48,280 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 00:54:48,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 00:54:48,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:48,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:48,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:54:48,283 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:48,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:48,283 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 00:54:48,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:48,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814111112] [2020-09-25 00:54:48,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:48,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:48,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 00:54:48,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:48,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 00:54:48,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:48,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:48,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:54:48,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:48,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:48,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:48,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:48,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:48,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:48,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:54:48,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:48,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:48,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:48,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:48,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:48,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:48,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:48,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 00:54:48,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:54:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:54:48,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814111112] [2020-09-25 00:54:48,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:54:48,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:54:48,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151286706] [2020-09-25 00:54:48,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:54:48,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:48,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:54:48,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:54:48,530 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 00:54:48,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:48,564 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 00:54:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:54:48,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 00:54:48,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:48,566 INFO L225 Difference]: With dead ends: 36 [2020-09-25 00:54:48,566 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 00:54:48,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:54:48,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 00:54:48,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 00:54:48,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 00:54:48,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 00:54:48,576 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 00:54:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:48,576 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 00:54:48,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:54:48,577 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 00:54:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 00:54:48,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:48,584 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:48,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:54:48,584 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:48,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:48,585 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 00:54:48,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:48,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639164382] [2020-09-25 00:54:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:48,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:50,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:50,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 00:54:50,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:54:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1981 [2020-09-25 00:54:50,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:50,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:54:50,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 00:54:50,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:54:50,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:50,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:50,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:50,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:50,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:50,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:50,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:54:50,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:50,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:50,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:50,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:50,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:50,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:50,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:50,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:50,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:54:50,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:50,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-25 00:54:50,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:50,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:50,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 00:54:50,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:50,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:51,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:51,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:51,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:51,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:51,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:51,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:54:51,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:51,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:51,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:51,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:54:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:51,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:51,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:51,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:51,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:51,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:54:51,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 00:54:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:51,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 00:54:51,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639164382] [2020-09-25 00:54:51,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:51,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:54:51,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181480856] [2020-09-25 00:54:51,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:54:51,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:51,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:54:51,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:54:51,114 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2020-09-25 00:54:51,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:51,279 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 00:54:51,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:54:51,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 00:54:51,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:51,282 INFO L225 Difference]: With dead ends: 52 [2020-09-25 00:54:51,283 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 00:54:51,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:54:51,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 00:54:51,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 00:54:51,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 00:54:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 00:54:51,301 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 00:54:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:51,302 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 00:54:51,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:54:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 00:54:51,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 00:54:51,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:51,305 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:51,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:54:51,306 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:51,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:51,307 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 00:54:51,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:51,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036170918] [2020-09-25 00:54:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:51,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:51,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:51,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:52,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:52,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:54:52,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:54:52,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-09-25 00:54:52,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:52,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:54:52,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:54:52,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:54:52,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:52,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:52,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:52,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:52,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:52,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:52,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:54:52,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:52,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:52,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:52,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:52,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:52,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:52,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:52,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:54:52,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:52,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 00:54:52,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:52,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:54:52,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:52,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:54:52,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:52,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:52,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:52,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:52,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:52,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:52,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:54:52,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:52,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:54:52,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:52,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:52,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:52,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:52,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:52,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:52,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:52,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:52,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 00:54:52,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:52,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:52,622 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 00:54:52,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036170918] [2020-09-25 00:54:52,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:52,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:54:52,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466000727] [2020-09-25 00:54:52,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:54:52,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:52,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:54:52,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:54:52,626 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2020-09-25 00:54:52,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:52,734 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2020-09-25 00:54:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 00:54:52,735 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 00:54:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:52,737 INFO L225 Difference]: With dead ends: 47 [2020-09-25 00:54:52,737 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 00:54:52,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:54:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 00:54:52,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-09-25 00:54:52,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 00:54:52,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-09-25 00:54:52,756 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2020-09-25 00:54:52,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:52,757 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-09-25 00:54:52,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:54:52,757 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-09-25 00:54:52,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 00:54:52,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:52,762 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:52,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:54:52,764 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:52,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:52,765 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 00:54:52,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:52,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410679123] [2020-09-25 00:54:52,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:52,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:52,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:52,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:53,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:53,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:54,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:54,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 00:54:54,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:54:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1670 [2020-09-25 00:54:54,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:54:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:54:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 00:54:54,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:54:54,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:54,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:54,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:54,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:54,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:54,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:54:54,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:54,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:54,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:54,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:54,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:54,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:54,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:54,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:54,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:54,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:54,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:54:54,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:54:54,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-09-25 00:54:54,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:54,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:54,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:54:54,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 00:54:54,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:54,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:54,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:54,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:54,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:54,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:54,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 00:54:54,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:54,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:54,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:54,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:54:54,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:55,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:55,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:55,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:55,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:55,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:55,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:55,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 00:54:55,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:55,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:55,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:55,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:55,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:55,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 00:54:55,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410679123] [2020-09-25 00:54:55,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:55,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:54:55,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719786369] [2020-09-25 00:54:55,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:54:55,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:55,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:54:55,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:54:55,091 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 9 states. [2020-09-25 00:54:55,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:55,226 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-09-25 00:54:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:54:55,227 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 00:54:55,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:55,228 INFO L225 Difference]: With dead ends: 76 [2020-09-25 00:54:55,229 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 00:54:55,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:54:55,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 00:54:55,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 00:54:55,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 00:54:55,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-09-25 00:54:55,240 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 35 [2020-09-25 00:54:55,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:55,241 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-09-25 00:54:55,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:54:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2020-09-25 00:54:55,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 00:54:55,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:55,243 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:55,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:54:55,244 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:55,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:55,244 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 00:54:55,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:55,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067341942] [2020-09-25 00:54:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:55,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:55,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:56,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 00:55:00,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:55:00,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 00:55:00,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:55:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 00:55:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:55:00,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:00,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:00,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:00,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:00,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:00,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:55:00,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:00,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 00:55:00,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:00,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:00,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 00:55:00,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:55:00,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:55:00,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:00,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 00:55:00,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:55:00,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:00,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:00,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:00,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:55:00,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:55:00,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:00,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:55:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:00,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:00,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 00:55:00,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:55:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:55:00,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:00,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:55:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:00,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:00,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:55:00,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:55:00,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:00,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:55:00,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 00:55:00,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067341942] [2020-09-25 00:55:00,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:00,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:55:00,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479444229] [2020-09-25 00:55:00,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:55:00,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:00,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:55:00,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:55:00,711 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand 11 states. [2020-09-25 00:55:00,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:00,864 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2020-09-25 00:55:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 00:55:00,865 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-25 00:55:00,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:00,866 INFO L225 Difference]: With dead ends: 55 [2020-09-25 00:55:00,867 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 00:55:00,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:55:00,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 00:55:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-09-25 00:55:00,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 00:55:00,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2020-09-25 00:55:00,877 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 52 [2020-09-25 00:55:00,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:00,878 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2020-09-25 00:55:00,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:55:00,878 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2020-09-25 00:55:00,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 00:55:00,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:00,882 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:00,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:55:00,882 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:00,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:00,883 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 00:55:00,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:00,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476791064] [2020-09-25 00:55:00,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:01,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:01,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:01,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:04,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:04,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:05,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:05,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 00:55:05,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:55:05,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 00:55:05,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:05,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:55:05,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:55:05,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 00:55:05,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:05,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:05,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:05,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:05,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:05,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:05,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:05,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:05,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:05,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:05,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:05,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:05,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:05,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:06,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:06,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:06,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:06,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:08,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:09,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:10,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:10,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 00:55:10,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:55:10,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 00:55:10,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:55:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:55:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:55:10,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:10,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:10,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:10,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:11,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:55:11,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:55:11,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-09-25 00:55:11,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:11,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:11,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:11,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:55:11,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:11,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:11,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:11,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:11,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:11,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 00:55:11,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:55:11,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:11,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:55:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:11,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:11,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:11,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:11,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:55:11,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:11,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:11,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:11,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:55:11,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:11,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:55:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:11,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:12,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:55:12,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:55:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1365 [2020-09-25 00:55:12,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:55:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:55:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 00:55:12,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:12,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:12,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:12,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:55:12,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:55:12,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 00:55:12,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:55:12,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:12,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:12,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:12,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:12,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:55:12,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:55:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:55:12,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:12,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:55:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:12,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:12,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:12,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:55:13,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:55:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:55:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:13,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:55:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:13,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:13,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:13,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:13,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:55:13,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:55:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:13,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:55:13,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 65 proven. 89 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 00:55:13,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476791064] [2020-09-25 00:55:13,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:13,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:55:13,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637681370] [2020-09-25 00:55:13,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:55:13,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:13,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:55:13,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:55:13,036 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand 11 states. [2020-09-25 00:55:13,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:13,227 INFO L93 Difference]: Finished difference Result 102 states and 152 transitions. [2020-09-25 00:55:13,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 00:55:13,228 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-09-25 00:55:13,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:13,230 INFO L225 Difference]: With dead ends: 102 [2020-09-25 00:55:13,230 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 00:55:13,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:55:13,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 00:55:13,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-09-25 00:55:13,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 00:55:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-09-25 00:55:13,242 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 87 [2020-09-25 00:55:13,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:13,243 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-09-25 00:55:13,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:55:13,243 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-09-25 00:55:13,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 00:55:13,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:13,245 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:13,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:55:13,246 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:13,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:13,246 INFO L82 PathProgramCache]: Analyzing trace with hash 904516360, now seen corresponding path program 4 times [2020-09-25 00:55:13,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:13,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097576369] [2020-09-25 00:55:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:13,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:15,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:18,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:18,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 00:55:18,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:55:18,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 00:55:18,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:55:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:55:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 00:55:18,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:18,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:18,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:18,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:18,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:18,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:18,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:18,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:18,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:18,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:18,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:18,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:18,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:18,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:18,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:18,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:18,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:18,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:18,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:23,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:23,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 00:55:23,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 00:55:23,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 00:55:23,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:23,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:55:23,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:55:23,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 00:55:23,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:23,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:23,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:23,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:23,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:23,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:23,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:23,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:25,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:25,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:55:25,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:55:25,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2166 [2020-09-25 00:55:25,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 00:55:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:25,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:25,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:25,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:25,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:25,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:25,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:55:25,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:55:25,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-09-25 00:55:25,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:55:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:55:25,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:25,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:25,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:25,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:25,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:25,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:25,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:55:25,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:55:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:55:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:25,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:55:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:25,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:25,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:25,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:25,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:25,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:55:25,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:25,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:55:25,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:25,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:55:25,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:25,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:55:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:25,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:25,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:25,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:25,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:25,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:55:25,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:25,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:55:25,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:25,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:55:25,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:25,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 00:55:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:25,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:25,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:25,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:25,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:25,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:55:25,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:25,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:55:25,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:55:25,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:55:25,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:25,975 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 56 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-25 00:55:25,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097576369] [2020-09-25 00:55:25,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:25,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:55:25,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453545510] [2020-09-25 00:55:25,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:55:25,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:25,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:55:25,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:55:25,980 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 9 states. [2020-09-25 00:55:26,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:26,163 INFO L93 Difference]: Finished difference Result 101 states and 126 transitions. [2020-09-25 00:55:26,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 00:55:26,166 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 00:55:26,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:26,168 INFO L225 Difference]: With dead ends: 101 [2020-09-25 00:55:26,168 INFO L226 Difference]: Without dead ends: 51 [2020-09-25 00:55:26,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:55:26,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-25 00:55:26,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-25 00:55:26,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 00:55:26,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-09-25 00:55:26,184 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 69 [2020-09-25 00:55:26,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:26,185 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-09-25 00:55:26,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:55:26,185 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-09-25 00:55:26,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 00:55:26,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:26,188 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:26,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:55:26,188 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:26,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:26,189 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 5 times [2020-09-25 00:55:26,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:26,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039414675] [2020-09-25 00:55:26,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:26,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:26,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:26,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:26,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:31,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 00:55:31,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:55:31,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 00:55:31,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:55:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:55:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 00:55:31,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:31,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:31,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:31,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:31,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:31,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:31,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:31,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:31,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:31,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:31,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:31,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:31,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:36,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 00:55:36,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:55:36,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 00:55:36,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:55:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:55:36,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 00:55:36,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:36,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:36,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:36,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:55:36,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:36,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 00:55:36,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:55:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 00:55:36,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:36,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:36,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:36,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:55:36,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:36,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:55:36,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:36,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:36,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:36,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:36,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:36,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:36,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:55:36,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:36,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:36,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:55:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:36,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:36,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:55:36,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:36,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:36,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:55:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:36,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:36,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:36,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:36,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:55:36,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:36,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:36,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:36,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:36,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 00:55:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:36,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:36,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:55:36,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:36,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 00:55:36,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:55:36,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:36,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:36,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:36,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:36,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 00:55:36,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:55:36,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:36,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:55:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:36,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:36,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:36,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:36,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:55:36,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:36,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:55:36,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:36,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:55:36,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 82 proven. 31 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-09-25 00:55:36,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039414675] [2020-09-25 00:55:36,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:36,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:55:36,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333942276] [2020-09-25 00:55:36,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:55:36,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:36,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:55:36,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:55:36,633 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 8 states. [2020-09-25 00:55:36,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:36,779 INFO L93 Difference]: Finished difference Result 110 states and 130 transitions. [2020-09-25 00:55:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:55:36,780 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-09-25 00:55:36,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:36,781 INFO L225 Difference]: With dead ends: 110 [2020-09-25 00:55:36,782 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 00:55:36,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:55:36,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 00:55:36,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-09-25 00:55:36,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 00:55:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2020-09-25 00:55:36,791 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 87 [2020-09-25 00:55:36,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:36,791 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2020-09-25 00:55:36,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:55:36,791 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2020-09-25 00:55:36,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-25 00:55:36,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:36,793 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:36,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:55:36,793 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:36,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:36,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1885389560, now seen corresponding path program 6 times [2020-09-25 00:55:36,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:36,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543175707] [2020-09-25 00:55:36,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:36,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:38,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:38,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:40,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:41,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:41,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 00:55:41,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:55:41,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 00:55:41,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:55:41,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:55:41,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 00:55:41,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:41,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:41,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:41,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:41,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:41,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:41,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:41,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:41,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:41,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:41,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:41,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking...