/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:29:59,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:29:59,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:29:59,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:29:59,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:29:59,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:29:59,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:29:59,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:29:59,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:29:59,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:29:59,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:29:59,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:29:59,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:29:59,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:29:59,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:29:59,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:29:59,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:29:59,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:29:59,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:29:59,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:29:59,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:29:59,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:29:59,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:29:59,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:29:59,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:29:59,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:29:59,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:29:59,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:29:59,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:29:59,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:29:59,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:29:59,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:29:59,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:29:59,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:29:59,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:29:59,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:29:59,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:29:59,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:29:59,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:29:59,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:29:59,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:29:59,836 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:29:59,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:29:59,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:29:59,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:29:59,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:29:59,869 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:29:59,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:29:59,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:29:59,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:29:59,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:29:59,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:29:59,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:29:59,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:29:59,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:29:59,871 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:29:59,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:29:59,872 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:29:59,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:29:59,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:29:59,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:29:59,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:29:59,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:29:59,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:29:59,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:29:59,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:29:59,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:29:59,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:29:59,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:29:59,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:29:59,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:29:59,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:30:00,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:30:00,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:30:00,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:30:00,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:30:00,322 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:30:00,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label43.c [2020-10-26 23:30:00,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9deabf5e1/643b90c7ac0846a7bc14474725dc369e/FLAGf479ec644 [2020-10-26 23:30:01,264 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:30:01,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label43.c [2020-10-26 23:30:01,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9deabf5e1/643b90c7ac0846a7bc14474725dc369e/FLAGf479ec644 [2020-10-26 23:30:01,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9deabf5e1/643b90c7ac0846a7bc14474725dc369e [2020-10-26 23:30:01,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:30:01,476 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:30:01,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:30:01,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:30:01,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:30:01,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:30:01" (1/1) ... [2020-10-26 23:30:01,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24333b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:01, skipping insertion in model container [2020-10-26 23:30:01,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:30:01" (1/1) ... [2020-10-26 23:30:01,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:30:01,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:30:02,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:30:02,190 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:30:02,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:30:02,422 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:30:02,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:02 WrapperNode [2020-10-26 23:30:02,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:30:02,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:30:02,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:30:02,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:30:02,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:02" (1/1) ... [2020-10-26 23:30:02,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:02" (1/1) ... [2020-10-26 23:30:02,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:02" (1/1) ... [2020-10-26 23:30:02,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:02" (1/1) ... [2020-10-26 23:30:02,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:02" (1/1) ... [2020-10-26 23:30:02,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:02" (1/1) ... [2020-10-26 23:30:02,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:02" (1/1) ... [2020-10-26 23:30:02,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:30:02,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:30:02,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:30:02,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:30:02,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:30:02,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:30:02,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:30:02,660 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:30:02,661 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:30:02,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:30:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:30:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:30:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:30:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:30:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:30:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:30:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:30:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:30:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:30:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:30:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:30:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:30:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:30:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:30:04,239 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:30:04,240 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:30:04,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:30:04 BoogieIcfgContainer [2020-10-26 23:30:04,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:30:04,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:30:04,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:30:04,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:30:04,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:30:01" (1/3) ... [2020-10-26 23:30:04,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec0b024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:30:04, skipping insertion in model container [2020-10-26 23:30:04,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:02" (2/3) ... [2020-10-26 23:30:04,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec0b024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:30:04, skipping insertion in model container [2020-10-26 23:30:04,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:30:04" (3/3) ... [2020-10-26 23:30:04,253 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label43.c [2020-10-26 23:30:04,266 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:30:04,272 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:30:04,287 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:30:04,318 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:30:04,318 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:30:04,319 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:30:04,319 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:30:04,319 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:30:04,319 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:30:04,319 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:30:04,320 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:30:04,345 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:30:04,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-26 23:30:04,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:04,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:04,354 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:04,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:04,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1374248048, now seen corresponding path program 1 times [2020-10-26 23:30:04,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:04,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269953743] [2020-10-26 23:30:04,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:04,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:05,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:05,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 23:30:05,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:05,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-26 23:30:05,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 23:30:05,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:30:05,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:05,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:05,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:05,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:05,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:05,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:30:05,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:05,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:05,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:30:05,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269953743] [2020-10-26 23:30:05,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:30:05,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:30:05,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231385873] [2020-10-26 23:30:05,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:30:05,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:05,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:30:05,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:30:05,237 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-26 23:30:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:07,515 INFO L93 Difference]: Finished difference Result 703 states and 1246 transitions. [2020-10-26 23:30:07,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:30:07,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-26 23:30:07,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:07,533 INFO L225 Difference]: With dead ends: 703 [2020-10-26 23:30:07,533 INFO L226 Difference]: Without dead ends: 381 [2020-10-26 23:30:07,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:30:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-26 23:30:07,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 377. [2020-10-26 23:30:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-26 23:30:07,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 553 transitions. [2020-10-26 23:30:07,627 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 553 transitions. Word has length 22 [2020-10-26 23:30:07,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:07,628 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 553 transitions. [2020-10-26 23:30:07,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:30:07,628 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 553 transitions. [2020-10-26 23:30:07,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-26 23:30:07,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:07,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:07,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:30:07,634 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:07,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:07,634 INFO L82 PathProgramCache]: Analyzing trace with hash -718830436, now seen corresponding path program 1 times [2020-10-26 23:30:07,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:07,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73770553] [2020-10-26 23:30:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:07,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:08,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-26 23:30:08,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:08,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 967 [2020-10-26 23:30:08,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:08,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:30:08,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:30:08,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:08,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:08,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:08,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:08,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:30:08,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:08,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:08,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:08,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:08,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:08,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:08,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:09,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:09,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:30:09,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:09,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 23:30:09,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:30:09,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:30:09,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73770553] [2020-10-26 23:30:09,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:30:09,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:30:09,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101746940] [2020-10-26 23:30:09,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:09,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:09,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:09,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:09,153 INFO L87 Difference]: Start difference. First operand 377 states and 553 transitions. Second operand 7 states. [2020-10-26 23:30:12,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:12,064 INFO L93 Difference]: Finished difference Result 1147 states and 1715 transitions. [2020-10-26 23:30:12,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:30:12,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-26 23:30:12,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:12,073 INFO L225 Difference]: With dead ends: 1147 [2020-10-26 23:30:12,073 INFO L226 Difference]: Without dead ends: 776 [2020-10-26 23:30:12,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:30:12,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-10-26 23:30:12,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 753. [2020-10-26 23:30:12,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-10-26 23:30:12,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 996 transitions. [2020-10-26 23:30:12,166 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 996 transitions. Word has length 91 [2020-10-26 23:30:12,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:12,166 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 996 transitions. [2020-10-26 23:30:12,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:12,166 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 996 transitions. [2020-10-26 23:30:12,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-26 23:30:12,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:12,170 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:12,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:30:12,171 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:12,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:12,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1813719404, now seen corresponding path program 1 times [2020-10-26 23:30:12,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:12,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960109292] [2020-10-26 23:30:12,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:12,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:12,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 23:30:13,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:13,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1176 [2020-10-26 23:30:13,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:13,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:30:13,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:13,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:13,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:13,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:13,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:30:13,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:13,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:13,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:30:13,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:13,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:13,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-26 23:30:13,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:30:13,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:30:13,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960109292] [2020-10-26 23:30:13,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:30:13,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:30:13,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163266821] [2020-10-26 23:30:13,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:13,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:13,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:13,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:13,949 INFO L87 Difference]: Start difference. First operand 753 states and 996 transitions. Second operand 8 states. [2020-10-26 23:30:17,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:17,935 INFO L93 Difference]: Finished difference Result 2634 states and 3614 transitions. [2020-10-26 23:30:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:30:17,936 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-26 23:30:17,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:17,947 INFO L225 Difference]: With dead ends: 2634 [2020-10-26 23:30:17,947 INFO L226 Difference]: Without dead ends: 1887 [2020-10-26 23:30:17,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:30:17,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2020-10-26 23:30:18,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1867. [2020-10-26 23:30:18,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1867 states. [2020-10-26 23:30:18,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 2339 transitions. [2020-10-26 23:30:18,020 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 2339 transitions. Word has length 95 [2020-10-26 23:30:18,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:18,021 INFO L481 AbstractCegarLoop]: Abstraction has 1867 states and 2339 transitions. [2020-10-26 23:30:18,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:18,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 2339 transitions. [2020-10-26 23:30:18,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-26 23:30:18,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:18,030 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:18,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:30:18,030 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:18,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:18,031 INFO L82 PathProgramCache]: Analyzing trace with hash 424126036, now seen corresponding path program 1 times [2020-10-26 23:30:18,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:18,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292377896] [2020-10-26 23:30:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:18,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:18,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:18,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:19,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:19,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:21,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:21,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-26 23:30:21,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:30:21,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3267 [2020-10-26 23:30:21,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:21,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:30:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:30:21,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:30:21,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:21,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:21,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:21,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:21,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:30:21,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:21,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:21,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:21,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:21,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:21,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:30:21,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:21,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 23:30:21,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:30:21,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:21,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:30:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:21,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:22,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:22,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:22,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:22,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 23:30:22,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:22,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:22,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:30:22,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:30:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 29 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:30:22,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292377896] [2020-10-26 23:30:22,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:22,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:22,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495658742] [2020-10-26 23:30:22,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:22,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:22,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:22,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:22,399 INFO L87 Difference]: Start difference. First operand 1867 states and 2339 transitions. Second operand 8 states. [2020-10-26 23:30:25,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:25,343 INFO L93 Difference]: Finished difference Result 3968 states and 4985 transitions. [2020-10-26 23:30:25,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:30:25,344 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 189 [2020-10-26 23:30:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:25,363 INFO L225 Difference]: With dead ends: 3968 [2020-10-26 23:30:25,363 INFO L226 Difference]: Without dead ends: 2289 [2020-10-26 23:30:25,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:30:25,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-10-26 23:30:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2059. [2020-10-26 23:30:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2059 states. [2020-10-26 23:30:25,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2538 transitions. [2020-10-26 23:30:25,465 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2538 transitions. Word has length 189 [2020-10-26 23:30:25,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:25,468 INFO L481 AbstractCegarLoop]: Abstraction has 2059 states and 2538 transitions. [2020-10-26 23:30:25,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:25,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2538 transitions. [2020-10-26 23:30:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-26 23:30:25,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:25,483 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:25,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:30:25,483 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:25,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:25,484 INFO L82 PathProgramCache]: Analyzing trace with hash -172811504, now seen corresponding path program 1 times [2020-10-26 23:30:25,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:25,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301814340] [2020-10-26 23:30:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:25,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:27,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:27,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:28,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:30,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:30,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-26 23:30:30,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:30:30,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-26 23:30:30,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:30,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:30,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:30:30,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:30:30,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:30,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:30,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:30,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:30,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:30,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:30,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:30:30,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:30,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:30,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:30,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:30,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:30,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:30,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:30,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:30,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:30:30,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:30,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:30,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:30,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:30,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:31,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:31,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:31,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:31,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:31,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 23:30:31,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:31,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:31,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:31,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:30:31,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:31,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:31,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:31,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:31,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:30:31,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:31,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 23:30:31,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:31,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:31,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:30:31,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:31,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-26 23:30:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:31,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:31,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:31,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:31,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:30:31,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:31,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:31,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:30:31,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:31,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 231 proven. 82 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-26 23:30:31,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301814340] [2020-10-26 23:30:31,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:31,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:31,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134437115] [2020-10-26 23:30:31,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:31,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:31,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:31,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:31,706 INFO L87 Difference]: Start difference. First operand 2059 states and 2538 transitions. Second operand 7 states. [2020-10-26 23:30:35,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:35,658 INFO L93 Difference]: Finished difference Result 5428 states and 6844 transitions. [2020-10-26 23:30:35,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:30:35,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2020-10-26 23:30:35,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:35,684 INFO L225 Difference]: With dead ends: 5428 [2020-10-26 23:30:35,684 INFO L226 Difference]: Without dead ends: 3375 [2020-10-26 23:30:35,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:30:35,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2020-10-26 23:30:35,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 3363. [2020-10-26 23:30:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3363 states. [2020-10-26 23:30:35,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4211 transitions. [2020-10-26 23:30:35,805 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4211 transitions. Word has length 408 [2020-10-26 23:30:35,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:35,809 INFO L481 AbstractCegarLoop]: Abstraction has 3363 states and 4211 transitions. [2020-10-26 23:30:35,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:35,809 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4211 transitions. [2020-10-26 23:30:35,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-26 23:30:35,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:35,821 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:35,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:30:35,822 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:35,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:35,822 INFO L82 PathProgramCache]: Analyzing trace with hash 2044855952, now seen corresponding path program 1 times [2020-10-26 23:30:35,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:35,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544045233] [2020-10-26 23:30:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:35,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:40,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:40,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-26 23:30:40,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:30:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 23:30:40,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:40,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:30:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-26 23:30:40,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:41,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:41,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:41,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:41,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:41,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:41,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:30:41,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:41,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:41,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:41,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:41,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:41,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:41,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:41,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:41,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:41,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:41,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 23:30:41,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:30:41,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:41,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:41,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:41,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:41,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:30:41,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:41,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-26 23:30:41,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:30:41,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:41,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-26 23:30:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:41,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:41,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:41,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:41,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:41,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:30:41,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:41,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:30:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:41,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:41,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-26 23:30:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:41,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:41,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:41,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:41,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:41,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:30:41,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:41,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:41,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:30:41,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:41,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 65 proven. 294 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-26 23:30:42,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544045233] [2020-10-26 23:30:42,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:42,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:42,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908334271] [2020-10-26 23:30:42,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:42,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:42,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:42,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:42,636 INFO L87 Difference]: Start difference. First operand 3363 states and 4211 transitions. Second operand 7 states. [2020-10-26 23:30:44,659 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 23:30:45,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:45,179 INFO L93 Difference]: Finished difference Result 6726 states and 8431 transitions. [2020-10-26 23:30:45,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:30:45,183 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 421 [2020-10-26 23:30:45,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:45,206 INFO L225 Difference]: With dead ends: 6726 [2020-10-26 23:30:45,206 INFO L226 Difference]: Without dead ends: 3737 [2020-10-26 23:30:45,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:30:45,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2020-10-26 23:30:45,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3731. [2020-10-26 23:30:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3731 states. [2020-10-26 23:30:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 4612 transitions. [2020-10-26 23:30:45,332 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 4612 transitions. Word has length 421 [2020-10-26 23:30:45,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:45,333 INFO L481 AbstractCegarLoop]: Abstraction has 3731 states and 4612 transitions. [2020-10-26 23:30:45,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:45,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 4612 transitions. [2020-10-26 23:30:45,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2020-10-26 23:30:45,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:45,348 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:45,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:30:45,348 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:45,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:45,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1982922696, now seen corresponding path program 1 times [2020-10-26 23:30:45,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:45,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999613922] [2020-10-26 23:30:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:45,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:45,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:46,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:49,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:50,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:50,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-26 23:30:50,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:30:50,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-26 23:30:50,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:50,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:30:50,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:30:50,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-26 23:30:50,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:50,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:50,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:50,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:50,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:50,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:50,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:30:50,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:50,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:50,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:50,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:50,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:50,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:50,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:30:50,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:50,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:50,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:50,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:50,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:50,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:50,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:50,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:30:50,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:50,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:50,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:50,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:30:50,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:50,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:51,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:51,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 23:30:51,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:51,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-10-26 23:30:51,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:51,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-26 23:30:51,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:51,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-10-26 23:30:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:51,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:52,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:52,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:52,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:52,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:30:52,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:52,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:30:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:52,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 282 proven. 82 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-26 23:30:52,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999613922] [2020-10-26 23:30:52,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:52,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:30:52,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847169962] [2020-10-26 23:30:52,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:52,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:52,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:52,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:52,614 INFO L87 Difference]: Start difference. First operand 3731 states and 4612 transitions. Second operand 8 states. [2020-10-26 23:30:53,776 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 23:30:55,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:55,869 INFO L93 Difference]: Finished difference Result 6938 states and 8710 transitions. [2020-10-26 23:30:55,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:30:55,871 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 500 [2020-10-26 23:30:55,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:55,892 INFO L225 Difference]: With dead ends: 6938 [2020-10-26 23:30:55,892 INFO L226 Difference]: Without dead ends: 3947 [2020-10-26 23:30:55,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:30:55,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3947 states. [2020-10-26 23:30:56,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3947 to 3919. [2020-10-26 23:30:56,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3919 states. [2020-10-26 23:30:56,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 4825 transitions. [2020-10-26 23:30:56,013 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 4825 transitions. Word has length 500 [2020-10-26 23:30:56,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:56,014 INFO L481 AbstractCegarLoop]: Abstraction has 3919 states and 4825 transitions. [2020-10-26 23:30:56,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 4825 transitions. [2020-10-26 23:30:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-10-26 23:30:56,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:56,028 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:56,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:30:56,029 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:56,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:56,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1354310812, now seen corresponding path program 1 times [2020-10-26 23:30:56,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:56,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762761854] [2020-10-26 23:30:56,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:56,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:56,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:57,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:00,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:01,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:01,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 525 [2020-10-26 23:31:01,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:31:01,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 23:31:01,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:01,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:01,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:31:01,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:31:01,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:01,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:01,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:01,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:01,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:01,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:01,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:01,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:01,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:01,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:01,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:01,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:01,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:31:01,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:31:01,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:31:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:01,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:31:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:01,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:01,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:01,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:01,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:01,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:01,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 23:31:01,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:01,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:01,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:01,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:31:01,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:01,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-26 23:31:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:01,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:01,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:01,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:31:01,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:01,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:31:01,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:01,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-26 23:31:01,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:01,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:01,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-26 23:31:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:01,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:01,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:01,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:01,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:31:01,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:31:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:01,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-10-26 23:31:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:01,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:01,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:01,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:31:01,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:01,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:31:01,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:01,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:01,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:31:01,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:01,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 163 proven. 259 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2020-10-26 23:31:02,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762761854] [2020-10-26 23:31:02,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:02,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:02,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666048365] [2020-10-26 23:31:02,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:02,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:02,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:02,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:02,029 INFO L87 Difference]: Start difference. First operand 3919 states and 4825 transitions. Second operand 7 states. [2020-10-26 23:31:04,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:04,991 INFO L93 Difference]: Finished difference Result 7428 states and 9284 transitions. [2020-10-26 23:31:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:31:04,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 505 [2020-10-26 23:31:04,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:05,014 INFO L225 Difference]: With dead ends: 7428 [2020-10-26 23:31:05,014 INFO L226 Difference]: Without dead ends: 3729 [2020-10-26 23:31:05,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:31:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2020-10-26 23:31:05,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3721. [2020-10-26 23:31:05,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3721 states. [2020-10-26 23:31:05,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 4131 transitions. [2020-10-26 23:31:05,118 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 4131 transitions. Word has length 505 [2020-10-26 23:31:05,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:05,118 INFO L481 AbstractCegarLoop]: Abstraction has 3721 states and 4131 transitions. [2020-10-26 23:31:05,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:05,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 4131 transitions. [2020-10-26 23:31:05,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-26 23:31:05,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:05,125 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:05,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:31:05,125 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:05,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:05,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1275785896, now seen corresponding path program 1 times [2020-10-26 23:31:05,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:05,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358004787] [2020-10-26 23:31:05,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:05,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:05,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:06,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:07,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:10,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:10,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 555 [2020-10-26 23:31:10,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:10,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-26 23:31:10,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:31:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:31:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-26 23:31:10,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:10,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:10,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:10,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:10,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:10,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:10,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:10,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:10,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:10,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:10,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:10,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:10,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:10,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:10,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:10,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:10,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:10,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:31:10,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:10,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:10,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:10,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:10,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:10,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:10,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:10,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:10,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:10,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:10,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:31:10,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:31:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:10,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:10,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:10,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:10,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:10,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:31:10,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:10,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:10,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:10,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:31:10,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:10,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:10,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:10,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:10,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:10,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 23:31:10,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:10,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:10,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:10,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:31:10,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 599 proven. 6 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 23:31:11,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358004787] [2020-10-26 23:31:11,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:11,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:31:11,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12517052] [2020-10-26 23:31:11,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:31:11,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:11,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:31:11,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:31:11,304 INFO L87 Difference]: Start difference. First operand 3721 states and 4131 transitions. Second operand 8 states. [2020-10-26 23:31:13,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:13,504 INFO L93 Difference]: Finished difference Result 8384 states and 9449 transitions. [2020-10-26 23:31:13,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:31:13,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 537 [2020-10-26 23:31:13,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:13,528 INFO L225 Difference]: With dead ends: 8384 [2020-10-26 23:31:13,528 INFO L226 Difference]: Without dead ends: 5035 [2020-10-26 23:31:13,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:31:13,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5035 states. [2020-10-26 23:31:13,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5035 to 5027. [2020-10-26 23:31:13,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5027 states. [2020-10-26 23:31:13,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5027 states to 5027 states and 5571 transitions. [2020-10-26 23:31:13,677 INFO L78 Accepts]: Start accepts. Automaton has 5027 states and 5571 transitions. Word has length 537 [2020-10-26 23:31:13,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:13,678 INFO L481 AbstractCegarLoop]: Abstraction has 5027 states and 5571 transitions. [2020-10-26 23:31:13,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:31:13,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5027 states and 5571 transitions. [2020-10-26 23:31:13,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2020-10-26 23:31:13,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:13,685 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:13,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:31:13,686 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:13,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:13,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1561200760, now seen corresponding path program 1 times [2020-10-26 23:31:13,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:13,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127805456] [2020-10-26 23:31:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:13,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:15,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:15,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:16,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:16,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:18,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:18,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 617 [2020-10-26 23:31:18,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:31:18,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-26 23:31:18,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:31:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:31:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-26 23:31:18,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:18,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:18,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:18,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:18,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:18,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:18,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:18,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:18,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:19,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:19,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:19,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:19,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:19,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:31:19,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:19,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:19,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:19,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:19,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:19,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:19,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:19,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:19,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:19,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:19,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:31:19,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:31:19,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:19,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:19,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:19,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:19,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:19,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:19,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:31:19,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:31:19,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:19,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:19,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:19,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:19,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:19,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:19,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:31:19,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:31:19,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:19,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:31:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:19,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:19,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:19,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:19,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:19,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 23:31:19,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:31:19,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:19,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-10-26 23:31:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:19,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:19,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:19,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:31:19,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:19,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:31:19,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:19,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:19,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:31:19,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:19,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 694 proven. 366 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-26 23:31:20,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127805456] [2020-10-26 23:31:20,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:20,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:31:20,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815800197] [2020-10-26 23:31:20,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:31:20,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:20,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:31:20,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:31:20,203 INFO L87 Difference]: Start difference. First operand 5027 states and 5571 transitions. Second operand 9 states. [2020-10-26 23:31:22,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:22,228 INFO L93 Difference]: Finished difference Result 10052 states and 11167 transitions. [2020-10-26 23:31:22,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:31:22,228 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 595 [2020-10-26 23:31:22,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:22,260 INFO L225 Difference]: With dead ends: 10052 [2020-10-26 23:31:22,261 INFO L226 Difference]: Without dead ends: 5397 [2020-10-26 23:31:22,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:31:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5397 states. [2020-10-26 23:31:22,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5397 to 4473. [2020-10-26 23:31:22,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4473 states. [2020-10-26 23:31:22,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4473 states to 4473 states and 4994 transitions. [2020-10-26 23:31:22,377 INFO L78 Accepts]: Start accepts. Automaton has 4473 states and 4994 transitions. Word has length 595 [2020-10-26 23:31:22,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:22,378 INFO L481 AbstractCegarLoop]: Abstraction has 4473 states and 4994 transitions. [2020-10-26 23:31:22,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:31:22,378 INFO L276 IsEmpty]: Start isEmpty. Operand 4473 states and 4994 transitions. [2020-10-26 23:31:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2020-10-26 23:31:22,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:22,386 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:22,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:31:22,386 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:22,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:22,387 INFO L82 PathProgramCache]: Analyzing trace with hash 277305552, now seen corresponding path program 1 times [2020-10-26 23:31:22,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:22,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417489197] [2020-10-26 23:31:22,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:26,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 716 [2020-10-26 23:31:26,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:31:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3811 [2020-10-26 23:31:26,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:31:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:31:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-26 23:31:26,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:26,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:26,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:26,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:26,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:26,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:26,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:26,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:26,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:26,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:26,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:26,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:26,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:26,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:26,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:31:26,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:26,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:26,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:26,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:26,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:26,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:26,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:26,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:26,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:31:26,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:26,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:26,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:26,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:26,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:26,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:31:26,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:26,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:26,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:26,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:31:26,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:26,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:27,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:27,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:27,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:27,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-26 23:31:27,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:31:27,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:27,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:31:27,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:28,031 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-10-26 23:31:28,185 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2020-10-26 23:31:28,336 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-26 23:31:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1229 backedges. 568 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-26 23:31:30,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417489197] [2020-10-26 23:31:30,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:30,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:31:30,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261638238] [2020-10-26 23:31:30,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:31:30,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:30,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:31:30,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:31:30,277 INFO L87 Difference]: Start difference. First operand 4473 states and 4994 transitions. Second operand 13 states. [2020-10-26 23:31:31,321 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2020-10-26 23:31:31,939 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-26 23:31:32,410 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-10-26 23:31:32,724 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2020-10-26 23:31:32,997 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2020-10-26 23:31:33,498 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 103 [2020-10-26 23:31:33,918 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 113 [2020-10-26 23:31:35,330 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2020-10-26 23:31:36,151 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 82 [2020-10-26 23:31:36,534 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 86 [2020-10-26 23:31:36,865 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 89 [2020-10-26 23:31:37,449 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 92 [2020-10-26 23:31:37,943 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 96 [2020-10-26 23:31:38,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:38,681 INFO L93 Difference]: Finished difference Result 9136 states and 10202 transitions. [2020-10-26 23:31:38,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 23:31:38,682 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 696 [2020-10-26 23:31:38,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:38,696 INFO L225 Difference]: With dead ends: 9136 [2020-10-26 23:31:38,696 INFO L226 Difference]: Without dead ends: 4658 [2020-10-26 23:31:38,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=248, Invalid=622, Unknown=0, NotChecked=0, Total=870 [2020-10-26 23:31:38,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2020-10-26 23:31:38,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4644. [2020-10-26 23:31:38,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4644 states. [2020-10-26 23:31:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4644 states to 4644 states and 5166 transitions. [2020-10-26 23:31:38,803 INFO L78 Accepts]: Start accepts. Automaton has 4644 states and 5166 transitions. Word has length 696 [2020-10-26 23:31:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:38,804 INFO L481 AbstractCegarLoop]: Abstraction has 4644 states and 5166 transitions. [2020-10-26 23:31:38,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:31:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 4644 states and 5166 transitions. [2020-10-26 23:31:38,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2020-10-26 23:31:38,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:38,813 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:38,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:31:38,814 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:38,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:38,814 INFO L82 PathProgramCache]: Analyzing trace with hash 612614260, now seen corresponding path program 1 times [2020-10-26 23:31:38,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:38,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587986597] [2020-10-26 23:31:38,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:39,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:39,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:41,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:43,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:43,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 734 [2020-10-26 23:31:43,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:43,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 23:31:43,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:43,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:31:43,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:31:43,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:31:43,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:44,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:44,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:44,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:44,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:44,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:44,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:44,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:44,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:44,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:44,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:44,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:44,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:44,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:31:44,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:44,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:44,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:44,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:44,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:44,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:44,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:31:44,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:44,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:44,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:44,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:44,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:44,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:44,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:44,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:44,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:44,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:44,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:31:44,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:31:44,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:44,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:44,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:44,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:45,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:45,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:45,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:45,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-26 23:31:45,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:31:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:31:45,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:45,743 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2020-10-26 23:31:45,965 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-26 23:31:46,194 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-26 23:31:46,430 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-10-26 23:31:46,676 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-26 23:31:47,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:31:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:47,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:47,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:47,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:47,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:47,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:31:47,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:31:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:47,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 419 proven. 176 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2020-10-26 23:31:48,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587986597] [2020-10-26 23:31:48,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:48,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:31:49,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895194364] [2020-10-26 23:31:49,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:31:49,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:49,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:31:49,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:31:49,003 INFO L87 Difference]: Start difference. First operand 4644 states and 5166 transitions. Second operand 13 states. [2020-10-26 23:31:50,210 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 94 [2020-10-26 23:31:50,618 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 23:31:51,249 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2020-10-26 23:31:51,693 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-10-26 23:31:51,979 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-10-26 23:31:52,317 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-10-26 23:31:52,693 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-26 23:31:53,070 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-10-26 23:31:53,356 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-26 23:31:54,456 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2020-10-26 23:31:55,398 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 94 [2020-10-26 23:31:55,920 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 95 [2020-10-26 23:31:56,285 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 94 [2020-10-26 23:31:56,682 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 94 [2020-10-26 23:31:57,077 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 98 [2020-10-26 23:31:58,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:58,001 INFO L93 Difference]: Finished difference Result 9848 states and 10936 transitions. [2020-10-26 23:31:58,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 23:31:58,002 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 714 [2020-10-26 23:31:58,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:58,017 INFO L225 Difference]: With dead ends: 9848 [2020-10-26 23:31:58,017 INFO L226 Difference]: Without dead ends: 5085 [2020-10-26 23:31:58,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870 [2020-10-26 23:31:58,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5085 states. [2020-10-26 23:31:58,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5085 to 4759. [2020-10-26 23:31:58,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4759 states. [2020-10-26 23:31:58,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4759 states to 4759 states and 5260 transitions. [2020-10-26 23:31:58,135 INFO L78 Accepts]: Start accepts. Automaton has 4759 states and 5260 transitions. Word has length 714 [2020-10-26 23:31:58,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:58,136 INFO L481 AbstractCegarLoop]: Abstraction has 4759 states and 5260 transitions. [2020-10-26 23:31:58,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:31:58,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4759 states and 5260 transitions. [2020-10-26 23:31:58,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2020-10-26 23:31:58,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:58,146 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:58,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:31:58,147 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:58,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:58,148 INFO L82 PathProgramCache]: Analyzing trace with hash -464754280, now seen corresponding path program 1 times [2020-10-26 23:31:58,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:58,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419628583] [2020-10-26 23:31:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:58,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:58,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:00,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:03,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:03,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 817 [2020-10-26 23:32:03,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:32:03,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 23:32:03,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:03,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:32:03,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:32:03,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:32:03,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:03,630 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:32:03,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:03,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:03,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:03,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:03,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:03,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:03,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:03,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:03,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:03,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:03,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:03,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:03,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:03,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:03,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:03,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:03,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:32:03,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:03,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:03,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:03,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:03,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:03,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:03,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:32:03,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:03,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:03,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:03,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:03,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:03,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:03,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:03,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:03,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:03,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:32:03,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:03,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:03,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:03,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:03,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:03,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:03,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:03,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:32:03,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:03,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:03,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:03,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:03,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:03,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:03,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 23:32:03,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:32:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:04,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:04,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:04,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:04,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:04,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:04,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:04,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-26 23:32:04,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:32:04,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1666 backedges. 683 proven. 2 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2020-10-26 23:32:05,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419628583] [2020-10-26 23:32:05,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:05,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:32:05,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482833972] [2020-10-26 23:32:05,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:32:05,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:05,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:32:05,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:32:05,238 INFO L87 Difference]: Start difference. First operand 4759 states and 5260 transitions. Second operand 8 states. [2020-10-26 23:32:08,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:08,147 INFO L93 Difference]: Finished difference Result 9718 states and 10756 transitions. [2020-10-26 23:32:08,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:32:08,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 795 [2020-10-26 23:32:08,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:08,165 INFO L225 Difference]: With dead ends: 9718 [2020-10-26 23:32:08,165 INFO L226 Difference]: Without dead ends: 4965 [2020-10-26 23:32:08,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:32:08,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4965 states. [2020-10-26 23:32:08,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4965 to 4943. [2020-10-26 23:32:08,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4943 states. [2020-10-26 23:32:08,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 5453 transitions. [2020-10-26 23:32:08,288 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 5453 transitions. Word has length 795 [2020-10-26 23:32:08,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:08,290 INFO L481 AbstractCegarLoop]: Abstraction has 4943 states and 5453 transitions. [2020-10-26 23:32:08,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:32:08,290 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 5453 transitions. [2020-10-26 23:32:08,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2020-10-26 23:32:08,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:08,303 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:08,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:32:08,303 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:08,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:08,304 INFO L82 PathProgramCache]: Analyzing trace with hash -670127012, now seen corresponding path program 1 times [2020-10-26 23:32:08,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:08,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854404610] [2020-10-26 23:32:08,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:08,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:09,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:09,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 895 [2020-10-26 23:32:09,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:09,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-10-26 23:32:09,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:32:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 23:32:09,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:09,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:09,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:09,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:09,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:09,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:09,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:09,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:09,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:09,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:09,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:09,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:09,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:09,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:09,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:09,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:32:09,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:09,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:09,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:09,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:09,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:09,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:09,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:09,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:09,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:09,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:09,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:32:09,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:09,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:09,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:09,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:09,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:09,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:09,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:09,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:09,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:09,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:32:09,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:09,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:09,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:09,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:09,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:09,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:09,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:32:09,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:09,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:09,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:09,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:09,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:09,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:32:09,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:09,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:09,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:09,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:09,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:09,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:09,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:32:09,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:09,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:09,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:10,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:10,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:10,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:10,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:10,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:32:10,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:32:10,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:10,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 109 proven. 7 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2020-10-26 23:32:10,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854404610] [2020-10-26 23:32:10,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:10,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:32:10,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558002975] [2020-10-26 23:32:10,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:32:10,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:10,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:32:10,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:32:10,505 INFO L87 Difference]: Start difference. First operand 4943 states and 5453 transitions. Second operand 5 states. [2020-10-26 23:32:12,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:12,451 INFO L93 Difference]: Finished difference Result 10442 states and 11696 transitions. [2020-10-26 23:32:12,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:32:12,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 871 [2020-10-26 23:32:12,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:12,471 INFO L225 Difference]: With dead ends: 10442 [2020-10-26 23:32:12,471 INFO L226 Difference]: Without dead ends: 5505 [2020-10-26 23:32:12,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:32:12,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5505 states. [2020-10-26 23:32:12,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5505 to 5497. [2020-10-26 23:32:12,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5497 states. [2020-10-26 23:32:12,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5497 states to 5497 states and 6173 transitions. [2020-10-26 23:32:12,595 INFO L78 Accepts]: Start accepts. Automaton has 5497 states and 6173 transitions. Word has length 871 [2020-10-26 23:32:12,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:12,596 INFO L481 AbstractCegarLoop]: Abstraction has 5497 states and 6173 transitions. [2020-10-26 23:32:12,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:32:12,596 INFO L276 IsEmpty]: Start isEmpty. Operand 5497 states and 6173 transitions. [2020-10-26 23:32:12,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2020-10-26 23:32:12,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:12,609 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:12,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:32:12,609 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:12,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:12,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1273644076, now seen corresponding path program 1 times [2020-10-26 23:32:12,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:12,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006581482] [2020-10-26 23:32:12,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:12,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:13,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:16,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:16,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:17,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 915 [2020-10-26 23:32:17,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:32:17,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-26 23:32:17,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:32:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:32:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:32:17,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:18,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:18,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:18,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:18,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:18,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:18,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:18,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:18,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:18,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:18,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:18,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:18,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:18,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:18,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:18,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:18,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:18,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:32:18,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:18,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:18,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:18,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:18,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:18,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:18,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:32:18,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:18,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:18,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:18,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:18,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:18,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:18,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:18,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:32:18,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:18,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:18,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:18,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:18,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:18,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:18,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:18,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:18,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:18,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:18,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:18,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:18,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:32:18,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:18,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:18,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:18,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:18,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:18,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:18,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:32:18,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:32:18,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:18,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:18,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:18,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:18,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:32:18,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:18,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:32:18,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:18,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:18,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:18,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:32:18,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:18,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:32:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:18,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:18,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:18,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:18,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:32:18,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:18,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-26 23:32:18,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:32:18,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2656 backedges. 1208 proven. 82 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:32:19,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006581482] [2020-10-26 23:32:19,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:19,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:32:19,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493559859] [2020-10-26 23:32:19,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:32:19,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:19,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:32:19,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:32:19,720 INFO L87 Difference]: Start difference. First operand 5497 states and 6173 transitions. Second operand 10 states. [2020-10-26 23:32:23,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:23,703 INFO L93 Difference]: Finished difference Result 12701 states and 14555 transitions. [2020-10-26 23:32:23,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 23:32:23,704 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 889 [2020-10-26 23:32:23,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:23,730 INFO L225 Difference]: With dead ends: 12701 [2020-10-26 23:32:23,730 INFO L226 Difference]: Without dead ends: 7175 [2020-10-26 23:32:23,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:32:23,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2020-10-26 23:32:23,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 6791. [2020-10-26 23:32:23,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6791 states. [2020-10-26 23:32:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6791 states to 6791 states and 7857 transitions. [2020-10-26 23:32:23,894 INFO L78 Accepts]: Start accepts. Automaton has 6791 states and 7857 transitions. Word has length 889 [2020-10-26 23:32:23,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:23,895 INFO L481 AbstractCegarLoop]: Abstraction has 6791 states and 7857 transitions. [2020-10-26 23:32:23,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:32:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 6791 states and 7857 transitions. [2020-10-26 23:32:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2020-10-26 23:32:23,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:23,909 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:23,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:32:23,909 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:23,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:23,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1030807820, now seen corresponding path program 1 times [2020-10-26 23:32:23,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:23,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486479001] [2020-10-26 23:32:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:24,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:24,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:27,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:28,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:28,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:29,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:29,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 948 [2020-10-26 23:32:29,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:32:29,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5156 [2020-10-26 23:32:29,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:32:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:32:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:32:29,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:29,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:29,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:29,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:29,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:29,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:29,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:32:29,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:29,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:29,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:29,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:29,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:29,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:29,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:29,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:29,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:29,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:32:29,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:29,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:29,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:29,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:29,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:29,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:29,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:29,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:29,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:29,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:29,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:32:29,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:29,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:29,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:29,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:29,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:29,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:29,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:29,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:32:29,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:29,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:29,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:29,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:29,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:29,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:29,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:29,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:32:29,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:29,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:29,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:29,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:29,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:29,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:29,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:29,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:29,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:29,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:32:29,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:29,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:29,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:29,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:29,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:29,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:32:29,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:32:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:29,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:30,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:30,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:30,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:32:30,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:30,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-26 23:32:30,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:30,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:30,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:30,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:32:30,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:30,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:32:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:30,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:30,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:30,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:30,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:32:30,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:30,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-26 23:32:30,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:30,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:30,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:30,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:32:30,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:32,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2692 backedges. 1244 proven. 82 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:32:32,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486479001] [2020-10-26 23:32:32,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:32,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:32:32,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911590160] [2020-10-26 23:32:32,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:32:32,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:32,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:32:32,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:32:32,133 INFO L87 Difference]: Start difference. First operand 6791 states and 7857 transitions. Second operand 10 states. [2020-10-26 23:32:32,638 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-26 23:32:34,701 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-26 23:32:34,867 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-26 23:32:35,617 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-10-26 23:32:36,574 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-26 23:32:36,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:36,725 INFO L93 Difference]: Finished difference Result 14037 states and 16268 transitions. [2020-10-26 23:32:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:32:36,730 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 922 [2020-10-26 23:32:36,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:36,756 INFO L225 Difference]: With dead ends: 14037 [2020-10-26 23:32:36,756 INFO L226 Difference]: Without dead ends: 7219 [2020-10-26 23:32:36,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:32:36,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7219 states. [2020-10-26 23:32:36,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7219 to 7167. [2020-10-26 23:32:36,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7167 states. [2020-10-26 23:32:36,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 8270 transitions. [2020-10-26 23:32:36,932 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 8270 transitions. Word has length 922 [2020-10-26 23:32:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:36,933 INFO L481 AbstractCegarLoop]: Abstraction has 7167 states and 8270 transitions. [2020-10-26 23:32:36,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:32:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 8270 transitions. [2020-10-26 23:32:36,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2020-10-26 23:32:36,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:36,947 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:36,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:32:36,947 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:36,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:36,948 INFO L82 PathProgramCache]: Analyzing trace with hash 211661424, now seen corresponding path program 1 times [2020-10-26 23:32:36,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:36,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25761399] [2020-10-26 23:32:36,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:37,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:37,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:41,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:42,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:42,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 949 [2020-10-26 23:32:42,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:32:42,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-26 23:32:42,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:42,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:32:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:32:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:32:42,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:42,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:42,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:42,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:42,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:42,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:32:42,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:42,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:42,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:42,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:42,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:42,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:42,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:42,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:42,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:42,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:42,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:42,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:42,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:42,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:42,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:42,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:42,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:42,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:42,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:42,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:42,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:32:42,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:42,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:42,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:42,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:42,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:42,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:42,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:42,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:32:42,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:42,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:42,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:42,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:42,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:42,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:42,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:42,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:42,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:32:42,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:42,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:42,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:42,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:42,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:42,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:42,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:42,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:42,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:42,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:42,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:32:42,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:42,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:42,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:42,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:42,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:42,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:42,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:42,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:42,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:42,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:42,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:32:42,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:42,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:42,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:42,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:32:42,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:42,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:42,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:42,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:42,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:32:42,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:42,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-26 23:32:42,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:32:42,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:43,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:32:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:43,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:43,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:43,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:43,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:32:43,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:43,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:32:43,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:43,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:43,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:43,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:32:43,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 1245 proven. 82 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:32:44,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25761399] [2020-10-26 23:32:44,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:44,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:32:44,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953661424] [2020-10-26 23:32:44,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:32:44,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:44,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:32:44,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:32:44,157 INFO L87 Difference]: Start difference. First operand 7167 states and 8270 transitions. Second operand 10 states. [2020-10-26 23:32:47,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:47,904 INFO L93 Difference]: Finished difference Result 14418 states and 16682 transitions. [2020-10-26 23:32:47,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-26 23:32:47,906 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 923 [2020-10-26 23:32:47,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:47,928 INFO L225 Difference]: With dead ends: 14418 [2020-10-26 23:32:47,929 INFO L226 Difference]: Without dead ends: 7185 [2020-10-26 23:32:47,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:32:47,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7185 states. [2020-10-26 23:32:48,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7185 to 7165. [2020-10-26 23:32:48,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7165 states. [2020-10-26 23:32:48,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7165 states to 7165 states and 8237 transitions. [2020-10-26 23:32:48,116 INFO L78 Accepts]: Start accepts. Automaton has 7165 states and 8237 transitions. Word has length 923 [2020-10-26 23:32:48,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:48,117 INFO L481 AbstractCegarLoop]: Abstraction has 7165 states and 8237 transitions. [2020-10-26 23:32:48,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:32:48,118 INFO L276 IsEmpty]: Start isEmpty. Operand 7165 states and 8237 transitions. [2020-10-26 23:32:48,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2020-10-26 23:32:48,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:48,133 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:48,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:32:48,134 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:48,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:48,135 INFO L82 PathProgramCache]: Analyzing trace with hash -221378164, now seen corresponding path program 1 times [2020-10-26 23:32:48,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:48,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645423351] [2020-10-26 23:32:48,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:48,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:50,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:51,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:51,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:52,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:53,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:53,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 957 [2020-10-26 23:32:53,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:32:53,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-26 23:32:53,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:53,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:53,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:32:53,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:32:53,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:53,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:53,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:53,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:53,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:53,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:53,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:53,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:53,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:53,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:53,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:53,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:53,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:53,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:53,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:53,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:53,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:53,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:53,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:53,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:53,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:32:53,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:53,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:53,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:53,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:53,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:53,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:53,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:53,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:32:53,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:53,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:53,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:53,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:53,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:53,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:53,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:53,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:53,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:32:53,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:53,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:53,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:53,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:53,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:53,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:53,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:53,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:53,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:53,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:53,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:32:53,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:53,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:53,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:53,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:53,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:53,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:53,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:53,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:53,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:53,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:32:53,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:32:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:53,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:53,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:53,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:53,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:53,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:53,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:32:53,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:32:53,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:53,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 759 [2020-10-26 23:32:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:53,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:53,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:53,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:32:53,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:53,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:32:53,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:53,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:53,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:32:53,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:53,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:53,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 832 [2020-10-26 23:32:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:53,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:53,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:53,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:32:53,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:32:53,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:32:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3129 backedges. 662 proven. 150 refuted. 0 times theorem prover too weak. 2317 trivial. 0 not checked. [2020-10-26 23:32:54,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645423351] [2020-10-26 23:32:54,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:54,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:32:54,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894509771] [2020-10-26 23:32:54,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:32:54,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:54,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:32:54,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:32:54,475 INFO L87 Difference]: Start difference. First operand 7165 states and 8237 transitions. Second operand 7 states. [2020-10-26 23:32:57,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:57,022 INFO L93 Difference]: Finished difference Result 15622 states and 18133 transitions. [2020-10-26 23:32:57,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:32:57,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 929 [2020-10-26 23:32:57,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:57,048 INFO L225 Difference]: With dead ends: 15622 [2020-10-26 23:32:57,048 INFO L226 Difference]: Without dead ends: 8463 [2020-10-26 23:32:57,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:32:57,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8463 states. [2020-10-26 23:32:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8463 to 8277. [2020-10-26 23:32:57,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-10-26 23:32:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 9392 transitions. [2020-10-26 23:32:57,236 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 9392 transitions. Word has length 929 [2020-10-26 23:32:57,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:57,237 INFO L481 AbstractCegarLoop]: Abstraction has 8277 states and 9392 transitions. [2020-10-26 23:32:57,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:32:57,238 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 9392 transitions. [2020-10-26 23:32:57,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2020-10-26 23:32:57,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:57,252 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:57,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:32:57,252 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:57,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:57,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1188956804, now seen corresponding path program 1 times [2020-10-26 23:32:57,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:57,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709228278] [2020-10-26 23:32:57,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-26 23:32:59,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1571 [2020-10-26 23:32:59,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:32:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:32:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 23:32:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:59,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:59,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:59,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:59,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:59,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:59,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:59,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:59,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:59,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:59,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:59,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:32:59,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:59,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:59,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:32:59,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:59,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:59,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:59,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:59,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:32:59,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:59,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:59,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:59,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:32:59,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:59,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:59,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:32:59,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:59,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:59,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:32:59,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:59,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-26 23:32:59,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:59,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:59,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:32:59,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:32:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:00,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:00,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:33:00,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:33:00,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:33:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2737 backedges. 1365 proven. 6 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:33:00,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709228278] [2020-10-26 23:33:00,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:00,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:33:00,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129149045] [2020-10-26 23:33:00,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:33:00,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:00,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:33:00,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:33:00,672 INFO L87 Difference]: Start difference. First operand 8277 states and 9392 transitions. Second operand 10 states. [2020-10-26 23:33:04,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:04,955 INFO L93 Difference]: Finished difference Result 16746 states and 19025 transitions. [2020-10-26 23:33:04,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:33:04,956 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 957 [2020-10-26 23:33:04,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:04,978 INFO L225 Difference]: With dead ends: 16746 [2020-10-26 23:33:04,978 INFO L226 Difference]: Without dead ends: 8475 [2020-10-26 23:33:04,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:33:04,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8475 states. [2020-10-26 23:33:05,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8475 to 8465. [2020-10-26 23:33:05,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8465 states. [2020-10-26 23:33:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8465 states to 8465 states and 9585 transitions. [2020-10-26 23:33:05,168 INFO L78 Accepts]: Start accepts. Automaton has 8465 states and 9585 transitions. Word has length 957 [2020-10-26 23:33:05,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:05,169 INFO L481 AbstractCegarLoop]: Abstraction has 8465 states and 9585 transitions. [2020-10-26 23:33:05,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:33:05,169 INFO L276 IsEmpty]: Start isEmpty. Operand 8465 states and 9585 transitions. [2020-10-26 23:33:05,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2020-10-26 23:33:05,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:05,187 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:05,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:33:05,187 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:05,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:05,188 INFO L82 PathProgramCache]: Analyzing trace with hash 298623704, now seen corresponding path program 1 times [2020-10-26 23:33:05,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:05,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754738975] [2020-10-26 23:33:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:05,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:05,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:11,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:11,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1034 [2020-10-26 23:33:11,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5857 [2020-10-26 23:33:11,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:33:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:33:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:33:11,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:33:11,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:11,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:11,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:11,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:11,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:11,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:33:11,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:11,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:11,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:11,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:11,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:11,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:11,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:11,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:33:11,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:11,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:11,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:11,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:11,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:11,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:11,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:33:11,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:11,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:11,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:11,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:11,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:11,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:11,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:11,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:11,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:11,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:11,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:33:11,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:11,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:11,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:11,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:11,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:33:11,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:11,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:33:11,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:11,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:11,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:11,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:11,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:11,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:33:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:11,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:11,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:11,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:33:11,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:11,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:33:11,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:11,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:11,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:33:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:11,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:11,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:11,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:33:11,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:11,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 23:33:11,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:11,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:11,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:11,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:33:11,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:11,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:33:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:11,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:11,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:11,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:11,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:11,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:33:11,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:11,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:33:11,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:11,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:33:11,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:12,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-26 23:33:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:12,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:12,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:12,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:12,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:33:12,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:33:12,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:33:12,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:13,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2937 backedges. 1077 proven. 46 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2020-10-26 23:33:13,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754738975] [2020-10-26 23:33:13,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:13,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:33:13,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958203438] [2020-10-26 23:33:13,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:33:13,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:13,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:33:13,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:33:13,104 INFO L87 Difference]: Start difference. First operand 8465 states and 9585 transitions. Second operand 9 states. [2020-10-26 23:33:16,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:16,924 INFO L93 Difference]: Finished difference Result 18915 states and 21630 transitions. [2020-10-26 23:33:16,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 23:33:16,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1008 [2020-10-26 23:33:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:16,955 INFO L225 Difference]: With dead ends: 18915 [2020-10-26 23:33:16,955 INFO L226 Difference]: Without dead ends: 10349 [2020-10-26 23:33:16,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-10-26 23:33:16,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10349 states. [2020-10-26 23:33:17,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10349 to 10305. [2020-10-26 23:33:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10305 states. [2020-10-26 23:33:17,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10305 states to 10305 states and 11799 transitions. [2020-10-26 23:33:17,172 INFO L78 Accepts]: Start accepts. Automaton has 10305 states and 11799 transitions. Word has length 1008 [2020-10-26 23:33:17,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:17,173 INFO L481 AbstractCegarLoop]: Abstraction has 10305 states and 11799 transitions. [2020-10-26 23:33:17,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:33:17,173 INFO L276 IsEmpty]: Start isEmpty. Operand 10305 states and 11799 transitions. [2020-10-26 23:33:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2020-10-26 23:33:17,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:17,192 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:17,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:33:17,192 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:17,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:17,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1755646028, now seen corresponding path program 1 times [2020-10-26 23:33:17,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:17,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864883167] [2020-10-26 23:33:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:17,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:18,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:18,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:21,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:22,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:22,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1100 [2020-10-26 23:33:22,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:33:22,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5146 [2020-10-26 23:33:22,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:22,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:33:22,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:33:22,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 387 [2020-10-26 23:33:22,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:22,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:22,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:22,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:22,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:22,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:22,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:33:22,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:22,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:22,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:22,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:22,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:22,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:22,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:33:22,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:22,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:22,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:22,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:22,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:22,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:22,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:22,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:33:22,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:22,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:22,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:22,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:22,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:22,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:22,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:33:22,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:22,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:22,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:22,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:22,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:33:22,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:22,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:33:22,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:22,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:22,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:33:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:22,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:22,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:22,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:33:22,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:22,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:33:22,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:22,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:23,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:33:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:23,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:23,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:23,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:33:23,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:23,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:33:23,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:33:23,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:23,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:33:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:23,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:23,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:23,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:33:23,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:23,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-26 23:33:23,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:33:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:33:23,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:23,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:33:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:23,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:23,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:23,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:33:23,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:23,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:33:23,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:33:23,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:23,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:33:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:23,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:23,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:23,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:33:23,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:23,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:33:23,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:33:23,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3548 backedges. 2006 proven. 164 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2020-10-26 23:33:24,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864883167] [2020-10-26 23:33:24,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:24,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:33:24,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613303956] [2020-10-26 23:33:24,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:33:24,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:24,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:33:24,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:33:24,793 INFO L87 Difference]: Start difference. First operand 10305 states and 11799 transitions. Second operand 11 states.