/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/array-cav19/array_min_and_copy_shift_sum_add.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 08:35:37,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:35:37,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:35:37,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:35:37,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:35:37,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:35:37,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:35:37,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:35:37,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:35:37,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:35:37,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:35:37,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:35:37,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:35:37,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:35:37,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:35:37,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:35:37,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:35:37,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:35:37,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:35:37,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:35:37,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:35:37,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:35:37,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:35:37,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:35:37,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:35:37,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:35:37,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:35:37,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:35:37,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:35:37,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:35:37,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:35:37,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:35:37,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:35:37,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:35:37,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:35:37,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:35:37,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:35:37,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:35:37,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:35:37,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:35:37,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:35:37,535 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 [2020-10-28 08:35:37,596 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:35:37,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:35:37,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:35:37,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:35:37,602 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:35:37,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:35:37,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 08:35:37,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:35:37,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 08:35:37,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:35:37,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:35:37,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:35:37,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:35:37,605 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 08:35:37,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:35:37,606 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:35:37,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:35:37,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:35:37,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:35:37,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:35:37,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:35:37,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:35:37,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:35:37,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:35:37,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:35:37,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:35:37,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:35:37,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:35:37,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:35:37,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:35:38,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:35:38,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:35:38,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:35:38,048 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:35:38,048 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:35:38,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c [2020-10-28 08:35:38,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee823ab49/b1a5caaa256645ef86aa5d2b08f4ff3f/FLAG56644a6ff [2020-10-28 08:35:38,791 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:35:38,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c [2020-10-28 08:35:38,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee823ab49/b1a5caaa256645ef86aa5d2b08f4ff3f/FLAG56644a6ff [2020-10-28 08:35:39,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee823ab49/b1a5caaa256645ef86aa5d2b08f4ff3f [2020-10-28 08:35:39,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:35:39,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:35:39,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:35:39,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:35:39,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:35:39,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c27e89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39, skipping insertion in model container [2020-10-28 08:35:39,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:35:39,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:35:39,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:35:39,382 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:35:39,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:35:39,435 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:35:39,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39 WrapperNode [2020-10-28 08:35:39,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:35:39,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:35:39,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:35:39,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:35:39,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:35:39,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:35:39,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:35:39,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:35:39,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (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 [2020-10-28 08:35:39,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:35:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:35:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:35:39,581 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 08:35:39,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 08:35:39,582 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:35:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:35:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:35:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:35:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:35:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 08:35:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 08:35:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 08:35:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:35:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:35:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:35:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:35:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:35:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:35:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:35:40,103 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:35:40,104 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 08:35:40,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:35:40 BoogieIcfgContainer [2020-10-28 08:35:40,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:35:40,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:35:40,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:35:40,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:35:40,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:35:39" (1/3) ... [2020-10-28 08:35:40,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2759c712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:35:40, skipping insertion in model container [2020-10-28 08:35:40,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (2/3) ... [2020-10-28 08:35:40,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2759c712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:35:40, skipping insertion in model container [2020-10-28 08:35:40,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:35:40" (3/3) ... [2020-10-28 08:35:40,116 INFO L111 eAbstractionObserver]: Analyzing ICFG array_min_and_copy_shift_sum_add.c [2020-10-28 08:35:40,129 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:35:40,135 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:35:40,150 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:35:40,179 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:35:40,179 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:35:40,180 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:35:40,180 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:35:40,180 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:35:40,180 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:35:40,180 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:35:40,180 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:35:40,199 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-28 08:35:40,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 08:35:40,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:40,207 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 08:35:40,207 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:40,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:40,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1452015039, now seen corresponding path program 1 times [2020-10-28 08:35:40,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:40,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589274376] [2020-10-28 08:35:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:40,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:40,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:40,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:40,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:41,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:35:41,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:35:41,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-10-28 08:35:41,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:41,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:41,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:41,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 08:35:41,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:41,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 08:35:41,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:41,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:41,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:41,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:41,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 08:35:41,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:41,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:41,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:41,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:35:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:41,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:41,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:41,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:41,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:35:41,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:41,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:41,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 08:35:41,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:41,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:41,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:35:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:41,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:41,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:41,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:41,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 08:35:41,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:41,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 08:35:41,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:41,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:35:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 08:35:41,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589274376] [2020-10-28 08:35:41,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:35:41,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 08:35:41,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470330201] [2020-10-28 08:35:41,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 08:35:41,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:41,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 08:35:41,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:35:41,239 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2020-10-28 08:35:41,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:41,402 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2020-10-28 08:35:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 08:35:41,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-28 08:35:41,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:41,414 INFO L225 Difference]: With dead ends: 74 [2020-10-28 08:35:41,414 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 08:35:41,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:35:41,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 08:35:41,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-28 08:35:41,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 08:35:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-28 08:35:41,472 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 28 [2020-10-28 08:35:41,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:41,473 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-28 08:35:41,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 08:35:41,473 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-28 08:35:41,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 08:35:41,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:41,476 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 08:35:41,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:35:41,476 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:41,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:41,477 INFO L82 PathProgramCache]: Analyzing trace with hash -548525567, now seen corresponding path program 1 times [2020-10-28 08:35:41,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:41,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216221961] [2020-10-28 08:35:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:41,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:35:41,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:41,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 08:35:41,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:41,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:41,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:35:41,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:35:41,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 08:35:41,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:41,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:41,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:41,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:41,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:41,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 08:35:41,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:41,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:41,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:41,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:41,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:41,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:41,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:35:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:41,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:41,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:41,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:41,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:35:41,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:41,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:41,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:41,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:41,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:35:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:41,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:41,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:41,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:41,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:35:41,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:41,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:35:41,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 08:35:41,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216221961] [2020-10-28 08:35:41,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:35:41,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 08:35:41,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571203280] [2020-10-28 08:35:41,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:35:41,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:41,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:35:41,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:35:41,872 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 6 states. [2020-10-28 08:35:42,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:42,119 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-10-28 08:35:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:35:42,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-28 08:35:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:42,121 INFO L225 Difference]: With dead ends: 39 [2020-10-28 08:35:42,121 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 08:35:42,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:35:42,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 08:35:42,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-28 08:35:42,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 08:35:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-28 08:35:42,133 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2020-10-28 08:35:42,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:42,135 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-28 08:35:42,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:35:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-28 08:35:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 08:35:42,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:42,137 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 08:35:42,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:35:42,137 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:42,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:42,138 INFO L82 PathProgramCache]: Analyzing trace with hash -74983421, now seen corresponding path program 1 times [2020-10-28 08:35:42,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:42,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604410350] [2020-10-28 08:35:42,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:42,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:42,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:42,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:42,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 08:35:42,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:42,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-28 08:35:42,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:42,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:35:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:35:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:35:42,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:42,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:42,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:42,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:42,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:42,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:42,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:35:42,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:42,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:42,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:42,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:42,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:42,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:42,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:35:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:42,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:42,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:42,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:42,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:35:42,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:42,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:42,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:42,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:42,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:42,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:42,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:35:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:42,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:42,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:42,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:42,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:42,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:35:42,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:42,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:42,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:42,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 08:35:42,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604410350] [2020-10-28 08:35:42,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:35:42,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 08:35:42,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505101647] [2020-10-28 08:35:42,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:35:42,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:42,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:35:42,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:35:42,773 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 6 states. [2020-10-28 08:35:42,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:42,969 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2020-10-28 08:35:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:35:42,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-28 08:35:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:42,971 INFO L225 Difference]: With dead ends: 58 [2020-10-28 08:35:42,971 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 08:35:42,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:35:42,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 08:35:42,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-10-28 08:35:42,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 08:35:42,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-28 08:35:42,982 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 30 [2020-10-28 08:35:42,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:42,982 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-28 08:35:42,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:35:42,983 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-28 08:35:42,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 08:35:42,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:42,984 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:42,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:35:42,985 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:42,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:42,985 INFO L82 PathProgramCache]: Analyzing trace with hash 366967093, now seen corresponding path program 1 times [2020-10-28 08:35:42,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:42,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322549736] [2020-10-28 08:35:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:43,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:43,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:43,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:43,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:44,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:44,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:44,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:44,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:44,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:45,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:46,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:46,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 08:35:46,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 08:35:46,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3204 [2020-10-28 08:35:46,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:46,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:46,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:35:46,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:35:46,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 08:35:46,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:46,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:46,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:46,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:46,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:46,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:46,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:35:46,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:46,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:46,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:46,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:46,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:46,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:46,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:35:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:46,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:46,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:46,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:46,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:46,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:35:46,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:46,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:46,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:46,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:46,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:46,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:46,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:35:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:46,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:46,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:46,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:46,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:46,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:35:46,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:46,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:46,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:46,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:46,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:35:46,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:46,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:35:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:46,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:46,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:46,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:46,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:46,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:35:46,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:46,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:46,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:46,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:46,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:35:46,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:46,857 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 08:35:46,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322549736] [2020-10-28 08:35:46,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:46,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:35:46,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330480692] [2020-10-28 08:35:46,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:35:46,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:46,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:35:46,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:35:46,865 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 14 states. [2020-10-28 08:35:47,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:47,768 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2020-10-28 08:35:47,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:35:47,769 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-10-28 08:35:47,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:47,779 INFO L225 Difference]: With dead ends: 62 [2020-10-28 08:35:47,779 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 08:35:47,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2020-10-28 08:35:47,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 08:35:47,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-10-28 08:35:47,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-28 08:35:47,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2020-10-28 08:35:47,794 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 42 [2020-10-28 08:35:47,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:47,794 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2020-10-28 08:35:47,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:35:47,795 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2020-10-28 08:35:47,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 08:35:47,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:47,798 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:47,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:35:47,799 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:47,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:47,799 INFO L82 PathProgramCache]: Analyzing trace with hash -654101261, now seen corresponding path program 1 times [2020-10-28 08:35:47,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:47,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445746384] [2020-10-28 08:35:47,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:47,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:47,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:48,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:48,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:48,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:49,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:49,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:49,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:50,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:50,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 08:35:50,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 08:35:50,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2704 [2020-10-28 08:35:50,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:50,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:50,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:35:50,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:35:50,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 08:35:50,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:50,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:50,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:50,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:50,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:50,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:50,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:35:50,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:50,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:50,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:50,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:50,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:50,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:35:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:50,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:50,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:50,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:50,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:50,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:35:50,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:50,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:50,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:50,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:50,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:50,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:50,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:35:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:50,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:50,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:50,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:50,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:50,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:35:50,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:50,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:35:50,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:50,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:35:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:50,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:50,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:50,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:50,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:50,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 08:35:50,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:50,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:35:50,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 08:35:50,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445746384] [2020-10-28 08:35:50,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:50,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:35:50,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560918491] [2020-10-28 08:35:50,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:35:50,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:50,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:35:50,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:35:50,963 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 15 states. [2020-10-28 08:35:52,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:52,351 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2020-10-28 08:35:52,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 08:35:52,351 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-10-28 08:35:52,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:52,354 INFO L225 Difference]: With dead ends: 72 [2020-10-28 08:35:52,355 INFO L226 Difference]: Without dead ends: 66 [2020-10-28 08:35:52,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2020-10-28 08:35:52,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-28 08:35:52,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-10-28 08:35:52,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 08:35:52,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2020-10-28 08:35:52,368 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 42 [2020-10-28 08:35:52,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:52,369 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2020-10-28 08:35:52,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:35:52,369 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2020-10-28 08:35:52,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 08:35:52,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:52,371 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:52,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:35:52,371 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:52,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:52,372 INFO L82 PathProgramCache]: Analyzing trace with hash -754832841, now seen corresponding path program 2 times [2020-10-28 08:35:52,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:52,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812959884] [2020-10-28 08:35:52,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:52,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:52,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:52,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:53,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:53,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:53,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:53,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:53,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 08:35:53,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:35:53,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1494 [2020-10-28 08:35:53,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:53,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:35:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:35:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:35:53,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:53,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:53,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:53,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:53,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:53,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:53,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:35:53,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:53,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:53,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:53,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:53,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:53,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:53,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:35:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:53,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:53,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:53,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:53,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:53,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:35:53,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:53,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:53,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:53,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:53,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:53,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:53,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:35:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:53,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:53,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:53,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:53,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:53,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:35:53,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:53,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:53,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:53,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:35:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:54,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:54,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:54,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:54,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:54,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:35:54,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:54,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:35:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 08:35:54,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812959884] [2020-10-28 08:35:54,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:54,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:35:54,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747333027] [2020-10-28 08:35:54,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:35:54,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:54,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:35:54,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:35:54,015 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand 8 states. [2020-10-28 08:35:54,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:54,317 INFO L93 Difference]: Finished difference Result 88 states and 111 transitions. [2020-10-28 08:35:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:35:54,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-28 08:35:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:54,319 INFO L225 Difference]: With dead ends: 88 [2020-10-28 08:35:54,319 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 08:35:54,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:35:54,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 08:35:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2020-10-28 08:35:54,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 08:35:54,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2020-10-28 08:35:54,335 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 44 [2020-10-28 08:35:54,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:54,336 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2020-10-28 08:35:54,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:35:54,336 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2020-10-28 08:35:54,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 08:35:54,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:54,337 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-28 08:35:54,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:35:54,338 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:54,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:54,338 INFO L82 PathProgramCache]: Analyzing trace with hash -2038456027, now seen corresponding path program 3 times [2020-10-28 08:35:54,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:54,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964275945] [2020-10-28 08:35:54,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:54,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:54,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:54,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:54,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:54,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:55,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:55,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:55,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:56,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:59,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:59,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:59,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 08:35:59,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 08:35:59,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 08:35:59,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:59,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:35:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:35:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 08:35:59,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:59,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:59,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:59,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:59,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:59,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:59,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 08:35:59,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:59,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:59,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:59,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:59,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:59,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:35:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:59,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:59,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:59,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:59,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:59,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:35:59,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:59,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:59,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:59,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:59,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:59,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:59,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:35:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:59,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:59,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:59,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:59,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:59,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:35:59,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:59,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:59,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:59,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:35:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:59,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:59,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:59,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:59,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:59,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:35:59,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:59,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:35:59,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:59,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:35:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:59,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:59,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:59,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:59,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:35:59,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:59,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:35:59,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:59,530 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 08:35:59,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964275945] [2020-10-28 08:35:59,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:59,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:35:59,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117318064] [2020-10-28 08:35:59,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:35:59,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:59,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:35:59,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:35:59,535 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand 8 states. [2020-10-28 08:35:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:59,849 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2020-10-28 08:35:59,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:35:59,849 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-28 08:35:59,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:59,851 INFO L225 Difference]: With dead ends: 65 [2020-10-28 08:35:59,851 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 08:35:59,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:35:59,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 08:35:59,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2020-10-28 08:35:59,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 08:35:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-28 08:35:59,874 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 52 [2020-10-28 08:35:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:59,876 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-28 08:35:59,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:35:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-28 08:35:59,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 08:35:59,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:59,878 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-28 08:35:59,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:35:59,879 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:59,882 INFO L82 PathProgramCache]: Analyzing trace with hash -481461655, now seen corresponding path program 4 times [2020-10-28 08:35:59,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:59,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910393424] [2020-10-28 08:35:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:59,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:00,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:00,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:01,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:01,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:02,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:03,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:04,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:04,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:04,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 08:36:04,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 08:36:04,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 08:36:04,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:04,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 08:36:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:36:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 08:36:04,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:05,763 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-10-28 08:36:06,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:06,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:06,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:06,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:06,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:36:06,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:06,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:06,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:06,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:36:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:06,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:06,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:06,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:06,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:06,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:06,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:06,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:36:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:06,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:06,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:06,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:06,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:06,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:06,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:06,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:06,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:36:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:06,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:06,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:06,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:06,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:36:06,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:06,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:06,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:06,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:06,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:06,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:06,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:36:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:06,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:06,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:06,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:06,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:36:06,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:06,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:06,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 08:36:06,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910393424] [2020-10-28 08:36:06,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:06,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 08:36:06,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599417355] [2020-10-28 08:36:06,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 08:36:06,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:06,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 08:36:06,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:36:06,432 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 21 states. [2020-10-28 08:36:07,467 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-10-28 08:36:07,719 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-28 08:36:08,098 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-28 08:36:08,335 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-28 08:36:08,614 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2020-10-28 08:36:08,852 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2020-10-28 08:36:09,082 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-28 08:36:09,277 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-28 08:36:09,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:09,776 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2020-10-28 08:36:09,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 08:36:09,777 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 56 [2020-10-28 08:36:09,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:09,779 INFO L225 Difference]: With dead ends: 84 [2020-10-28 08:36:09,779 INFO L226 Difference]: Without dead ends: 66 [2020-10-28 08:36:09,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=269, Invalid=1453, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 08:36:09,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-28 08:36:09,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 51. [2020-10-28 08:36:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 08:36:09,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2020-10-28 08:36:09,792 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 56 [2020-10-28 08:36:09,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:09,793 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2020-10-28 08:36:09,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 08:36:09,793 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2020-10-28 08:36:09,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 08:36:09,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:09,795 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-28 08:36:09,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:36:09,795 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:09,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:09,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1299110105, now seen corresponding path program 1 times [2020-10-28 08:36:09,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:09,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388717974] [2020-10-28 08:36:09,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:09,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:09,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:10,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:11,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:11,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:11,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:12,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:13,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:13,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:14,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:14,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:14,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:14,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:14,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:14,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:14,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 08:36:14,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 08:36:14,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 08:36:14,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:14,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 08:36:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:36:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 08:36:14,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:15,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:15,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:15,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:15,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:15,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:15,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:36:15,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:15,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:15,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:15,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:15,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:15,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:15,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:36:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:15,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:15,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:15,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:15,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:15,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:15,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:15,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:15,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:15,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:15,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:15,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:15,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:36:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:15,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:15,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:15,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:15,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:15,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:15,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:15,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:15,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:15,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:36:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:15,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:15,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:15,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:15,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:15,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:36:15,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:15,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:15,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:15,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:15,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:15,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:15,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:36:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:15,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:15,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:15,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:15,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:15,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:36:15,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:15,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:15,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:15,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:15,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:15,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 08:36:15,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388717974] [2020-10-28 08:36:15,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:15,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 08:36:15,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847434597] [2020-10-28 08:36:15,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 08:36:15,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:15,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 08:36:15,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:36:15,878 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand 21 states. [2020-10-28 08:36:18,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:18,689 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2020-10-28 08:36:18,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 08:36:18,690 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 56 [2020-10-28 08:36:18,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:18,691 INFO L225 Difference]: With dead ends: 83 [2020-10-28 08:36:18,691 INFO L226 Difference]: Without dead ends: 77 [2020-10-28 08:36:18,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=327, Invalid=1743, Unknown=0, NotChecked=0, Total=2070 [2020-10-28 08:36:18,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-28 08:36:18,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 68. [2020-10-28 08:36:18,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-28 08:36:18,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 85 transitions. [2020-10-28 08:36:18,708 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 85 transitions. Word has length 56 [2020-10-28 08:36:18,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:18,708 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 85 transitions. [2020-10-28 08:36:18,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 08:36:18,708 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 85 transitions. [2020-10-28 08:36:18,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 08:36:18,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:18,710 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-28 08:36:18,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 08:36:18,710 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:18,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:18,713 INFO L82 PathProgramCache]: Analyzing trace with hash -458829401, now seen corresponding path program 2 times [2020-10-28 08:36:18,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:18,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315484628] [2020-10-28 08:36:18,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:18,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:19,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:19,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:20,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:20,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:21,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:21,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:21,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:22,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:22,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:22,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:23,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:23,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:23,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:23,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:23,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:23,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 08:36:23,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 08:36:23,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4518 [2020-10-28 08:36:23,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:23,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 08:36:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:36:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 08:36:23,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:24,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:24,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:24,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:24,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:24,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:24,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:24,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:24,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:24,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:24,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:24,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:24,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:24,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:36:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:24,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:24,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:24,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:24,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:24,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:24,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:24,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:24,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:24,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:24,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:24,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:24,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:36:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:24,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:24,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:24,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:24,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:24,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:24,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:24,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:24,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:24,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:24,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:24,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:24,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:36:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:24,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:24,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:24,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:24,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:24,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:36:24,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:24,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:24,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:24,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:24,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:24,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:24,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:36:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:24,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:24,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:24,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:24,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:24,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:36:24,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:24,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:24,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 08:36:24,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315484628] [2020-10-28 08:36:24,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:24,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 08:36:24,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3002144] [2020-10-28 08:36:24,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 08:36:24,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:24,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 08:36:24,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:36:24,515 INFO L87 Difference]: Start difference. First operand 68 states and 85 transitions. Second operand 25 states. [2020-10-28 08:36:26,092 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-10-28 08:36:26,655 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 50 [2020-10-28 08:36:26,842 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2020-10-28 08:36:27,064 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-10-28 08:36:27,368 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-28 08:36:27,532 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-28 08:36:27,717 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-28 08:36:28,291 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-28 08:36:28,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:28,733 INFO L93 Difference]: Finished difference Result 102 states and 126 transitions. [2020-10-28 08:36:28,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 08:36:28,733 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 56 [2020-10-28 08:36:28,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:28,735 INFO L225 Difference]: With dead ends: 102 [2020-10-28 08:36:28,735 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 08:36:28,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=451, Invalid=2629, Unknown=0, NotChecked=0, Total=3080 [2020-10-28 08:36:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 08:36:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 83. [2020-10-28 08:36:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 08:36:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 105 transitions. [2020-10-28 08:36:28,761 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 105 transitions. Word has length 56 [2020-10-28 08:36:28,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:28,762 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 105 transitions. [2020-10-28 08:36:28,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 08:36:28,762 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 105 transitions. [2020-10-28 08:36:28,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 08:36:28,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:28,763 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-28 08:36:28,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 08:36:28,763 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:28,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:28,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1276477851, now seen corresponding path program 2 times [2020-10-28 08:36:28,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:28,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671834357] [2020-10-28 08:36:28,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:28,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:28,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:29,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:29,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:30,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:30,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:30,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:30,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:30,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:31,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:31,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:32,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:32,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:32,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:32,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:32,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:32,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:32,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:32,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 08:36:32,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 08:36:32,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3739 [2020-10-28 08:36:32,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:32,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:32,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 08:36:32,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:36:32,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 08:36:32,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:33,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:33,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:33,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:33,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:33,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:33,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:33,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:33,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:33,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:33,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:33,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:33,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:33,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:36:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:33,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:33,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:33,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:33,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:33,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:33,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:33,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:33,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:33,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:36:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:33,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:33,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:33,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:33,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:33,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:33,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:33,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:33,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:36:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:33,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:33,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:33,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:33,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:33,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:33,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:33,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:33,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:33,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:36:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:33,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:33,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:33,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:33,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:36:33,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:33,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:33,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:33,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:33,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:33,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 08:36:33,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671834357] [2020-10-28 08:36:33,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:33,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 08:36:33,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471969304] [2020-10-28 08:36:33,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 08:36:33,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:33,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 08:36:33,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:36:33,785 INFO L87 Difference]: Start difference. First operand 83 states and 105 transitions. Second operand 25 states. [2020-10-28 08:36:35,309 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-28 08:36:35,477 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-10-28 08:36:36,075 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-28 08:36:36,258 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-28 08:36:36,462 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-10-28 08:36:37,052 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-10-28 08:36:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:37,974 INFO L93 Difference]: Finished difference Result 137 states and 171 transitions. [2020-10-28 08:36:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 08:36:37,975 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 56 [2020-10-28 08:36:37,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:37,976 INFO L225 Difference]: With dead ends: 137 [2020-10-28 08:36:37,977 INFO L226 Difference]: Without dead ends: 131 [2020-10-28 08:36:37,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=392, Invalid=2578, Unknown=0, NotChecked=0, Total=2970 [2020-10-28 08:36:37,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-28 08:36:37,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 91. [2020-10-28 08:36:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 08:36:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2020-10-28 08:36:37,996 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 56 [2020-10-28 08:36:37,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:37,997 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2020-10-28 08:36:37,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 08:36:37,997 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2020-10-28 08:36:37,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 08:36:37,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:37,998 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-28 08:36:37,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 08:36:37,998 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:37,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:37,999 INFO L82 PathProgramCache]: Analyzing trace with hash 223686185, now seen corresponding path program 3 times [2020-10-28 08:36:37,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:37,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011395852] [2020-10-28 08:36:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:38,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:38,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:38,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:38,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:39,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:39,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:39,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:40,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:40,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:40,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:41,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:41,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:41,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:41,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 08:36:41,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 08:36:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3496 [2020-10-28 08:36:41,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:41,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:36:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:36:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 08:36:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:41,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:41,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:41,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:41,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:41,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:41,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:41,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:41,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:41,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:41,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:41,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:41,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:41,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:36:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:41,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:41,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:41,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:41,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:41,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:41,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:41,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:41,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:41,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:41,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:41,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:41,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:36:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:41,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:41,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:41,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:41,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:41,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:41,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:41,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:41,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:41,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:41,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:41,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:41,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:36:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:41,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:41,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:41,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:41,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:41,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:41,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:41,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:41,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:41,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:41,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:41,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:41,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:36:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:41,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:41,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:41,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:41,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:41,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:41,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:41,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:41,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:41,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:41,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 08:36:41,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011395852] [2020-10-28 08:36:41,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:41,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:36:41,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474757327] [2020-10-28 08:36:41,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:36:41,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:41,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:36:41,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:36:41,637 INFO L87 Difference]: Start difference. First operand 91 states and 115 transitions. Second operand 10 states. [2020-10-28 08:36:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:42,022 INFO L93 Difference]: Finished difference Result 136 states and 170 transitions. [2020-10-28 08:36:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:36:42,026 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-28 08:36:42,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:42,027 INFO L225 Difference]: With dead ends: 136 [2020-10-28 08:36:42,027 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 08:36:42,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:36:42,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 08:36:42,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 79. [2020-10-28 08:36:42,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 08:36:42,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2020-10-28 08:36:42,042 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 58 [2020-10-28 08:36:42,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:42,042 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2020-10-28 08:36:42,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:36:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2020-10-28 08:36:42,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 08:36:42,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:42,043 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:42,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 08:36:42,044 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:42,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:42,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1724972633, now seen corresponding path program 5 times [2020-10-28 08:36:42,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:42,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548476569] [2020-10-28 08:36:42,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:42,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:42,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:42,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:42,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:42,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:42,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:42,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:42,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:42,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:43,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:43,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:43,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:43,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:43,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:44,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:44,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:44,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:44,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:44,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:45,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:46,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:46,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:46,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:47,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:47,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 08:36:47,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-28 08:36:47,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:36:47,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:47,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:47,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:36:47,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:36:47,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 08:36:47,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:47,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:47,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:47,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:47,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:47,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:47,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:36:47,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:47,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:47,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:47,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:47,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:36:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:47,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:47,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:47,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:47,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:47,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:47,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:47,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:47,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:36:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:47,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:47,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:47,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:47,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:47,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:47,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:47,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:47,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:36:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:47,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:47,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:47,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:47,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:47,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:47,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:47,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:47,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:47,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:36:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:47,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:47,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:47,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:47,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:47,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:47,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:47,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:47,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:47,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:47,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:47,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:47,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:36:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:47,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:47,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:47,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:47,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:47,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:47,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:47,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:47,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:47,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:47,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:47,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-28 08:36:47,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548476569] [2020-10-28 08:36:47,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:47,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:36:47,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2340225] [2020-10-28 08:36:47,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:36:47,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:47,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:36:47,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:36:47,255 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand 10 states. [2020-10-28 08:36:47,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:47,816 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2020-10-28 08:36:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:36:47,817 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-10-28 08:36:47,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:47,818 INFO L225 Difference]: With dead ends: 87 [2020-10-28 08:36:47,818 INFO L226 Difference]: Without dead ends: 75 [2020-10-28 08:36:47,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:36:47,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-28 08:36:47,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-28 08:36:47,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 08:36:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2020-10-28 08:36:47,830 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 66 [2020-10-28 08:36:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:47,830 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2020-10-28 08:36:47,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:36:47,831 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2020-10-28 08:36:47,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 08:36:47,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:47,836 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:47,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 08:36:47,836 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:47,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:47,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2087047779, now seen corresponding path program 6 times [2020-10-28 08:36:47,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:47,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553565255] [2020-10-28 08:36:47,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:47,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:48,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:48,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:49,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:50,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:50,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:52,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:52,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:52,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 08:36:52,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 08:36:52,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 08:36:52,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:52,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:52,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 08:36:52,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:36:52,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 08:36:52,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:54,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:54,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:54,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:54,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:54,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:54,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:36:54,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:54,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:54,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:54,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:36:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:54,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:54,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:54,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:54,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:54,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:54,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:54,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:54,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:54,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:54,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:54,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:36:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:54,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:54,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:54,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:54,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:54,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:54,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:54,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:54,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:54,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:36:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:54,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:54,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:54,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:54,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:54,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:54,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:54,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:54,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:54,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:36:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:54,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:54,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:54,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:54,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:54,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:54,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:54,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:54,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:54,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:54,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:54,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:54,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:36:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:54,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:54,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:54,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:54,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:54,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:36:54,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:54,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:54,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:54,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:54,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:54,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 08:36:54,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553565255] [2020-10-28 08:36:54,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:54,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 08:36:54,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588115218] [2020-10-28 08:36:54,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 08:36:54,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:54,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 08:36:54,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2020-10-28 08:36:54,983 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 28 states. [2020-10-28 08:36:55,558 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2020-10-28 08:36:56,462 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-28 08:36:57,112 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-28 08:36:57,314 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-28 08:36:57,482 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 08:36:58,354 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-10-28 08:36:58,845 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-28 08:36:59,155 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-28 08:36:59,354 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-28 08:36:59,717 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2020-10-28 08:36:59,898 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2020-10-28 08:37:00,282 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2020-10-28 08:37:01,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:01,358 INFO L93 Difference]: Finished difference Result 128 states and 166 transitions. [2020-10-28 08:37:01,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-28 08:37:01,359 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 70 [2020-10-28 08:37:01,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:01,361 INFO L225 Difference]: With dead ends: 128 [2020-10-28 08:37:01,361 INFO L226 Difference]: Without dead ends: 122 [2020-10-28 08:37:01,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=649, Invalid=3641, Unknown=0, NotChecked=0, Total=4290 [2020-10-28 08:37:01,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-28 08:37:01,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 84. [2020-10-28 08:37:01,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-28 08:37:01,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2020-10-28 08:37:01,380 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 70 [2020-10-28 08:37:01,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:01,381 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2020-10-28 08:37:01,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 08:37:01,381 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2020-10-28 08:37:01,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 08:37:01,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:01,382 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-10-28 08:37:01,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 08:37:01,382 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:01,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:01,383 INFO L82 PathProgramCache]: Analyzing trace with hash 2073906011, now seen corresponding path program 4 times [2020-10-28 08:37:01,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:01,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147109873] [2020-10-28 08:37:01,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:01,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:01,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:02,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:02,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:03,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:03,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:04,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:05,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:06,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:06,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:06,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 08:37:06,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 08:37:06,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:37:06,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:06,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 08:37:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:37:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 08:37:06,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:07,261 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-10-28 08:37:07,402 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-10-28 08:37:07,562 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2020-10-28 08:37:07,727 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-10-28 08:37:07,987 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2020-10-28 08:37:08,210 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2020-10-28 08:37:08,624 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 54 [2020-10-28 08:37:08,877 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2020-10-28 08:37:09,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:09,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:09,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:09,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:09,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:09,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:09,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:09,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:09,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:09,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:09,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:09,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:09,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:37:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:09,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:09,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:09,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:09,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:09,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:09,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:09,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:09,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:09,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:09,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:09,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:37:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:09,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:09,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:09,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:09,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:09,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:37:09,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:09,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:09,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:09,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:09,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:09,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:09,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:37:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:09,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:09,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:09,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:09,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:09,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:37:09,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:09,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:09,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:09,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:09,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:09,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:09,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:37:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:09,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:09,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:09,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:09,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:09,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:37:09,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:09,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:09,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:09,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:09,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:09,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:09,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:37:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:09,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:09,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:09,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:09,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:09,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:37:09,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:09,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:09,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:09,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:09,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:09,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:09,999 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 08:37:10,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147109873] [2020-10-28 08:37:10,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:10,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 08:37:10,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861302581] [2020-10-28 08:37:10,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 08:37:10,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:10,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 08:37:10,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2020-10-28 08:37:10,002 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand 29 states. [2020-10-28 08:37:11,812 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-10-28 08:37:12,198 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 50 [2020-10-28 08:37:12,404 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 48 [2020-10-28 08:37:12,675 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 58 [2020-10-28 08:37:13,158 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 87 [2020-10-28 08:37:13,717 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2020-10-28 08:37:14,174 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2020-10-28 08:37:14,898 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 111 [2020-10-28 08:37:15,187 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2020-10-28 08:37:16,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:16,004 INFO L93 Difference]: Finished difference Result 115 states and 143 transitions. [2020-10-28 08:37:16,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 08:37:16,005 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 70 [2020-10-28 08:37:16,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:16,006 INFO L225 Difference]: With dead ends: 115 [2020-10-28 08:37:16,006 INFO L226 Difference]: Without dead ends: 109 [2020-10-28 08:37:16,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=412, Invalid=2344, Unknown=0, NotChecked=0, Total=2756 [2020-10-28 08:37:16,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-28 08:37:16,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 86. [2020-10-28 08:37:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-28 08:37:16,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2020-10-28 08:37:16,032 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 70 [2020-10-28 08:37:16,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:16,033 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2020-10-28 08:37:16,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 08:37:16,033 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2020-10-28 08:37:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 08:37:16,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:16,034 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-10-28 08:37:16,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 08:37:16,034 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:16,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:16,035 INFO L82 PathProgramCache]: Analyzing trace with hash -36063781, now seen corresponding path program 5 times [2020-10-28 08:37:16,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:16,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88452243] [2020-10-28 08:37:16,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:16,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:16,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:17,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:17,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:18,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:20,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:20,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:21,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:21,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:21,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 08:37:21,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 08:37:21,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 08:37:21,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:21,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 08:37:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:37:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 08:37:21,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:21,582 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 21 [2020-10-28 08:37:21,740 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 28 [2020-10-28 08:37:21,895 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 29 [2020-10-28 08:37:22,028 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2020-10-28 08:37:22,162 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-10-28 08:37:22,390 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 37 [2020-10-28 08:37:22,635 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2020-10-28 08:37:22,835 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 45 [2020-10-28 08:37:23,050 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2020-10-28 08:37:23,260 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2020-10-28 08:37:23,553 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 51 [2020-10-28 08:37:23,899 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 49 [2020-10-28 08:37:24,412 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 61 [2020-10-28 08:37:24,733 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 63 [2020-10-28 08:37:24,925 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 35 [2020-10-28 08:37:25,133 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 34 [2020-10-28 08:37:25,468 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 36 [2020-10-28 08:37:25,679 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 32 [2020-10-28 08:37:26,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:26,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:26,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:26,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:26,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:26,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:37:26,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:26,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:26,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:26,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:26,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:26,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:26,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:37:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:26,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:26,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:26,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:26,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:26,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:26,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:26,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:26,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:26,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:37:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:26,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:26,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:26,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:26,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:26,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:26,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:26,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:26,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:37:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:26,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:26,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:26,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:26,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:37:26,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:26,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:26,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:37:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:26,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:26,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:26,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:26,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:26,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:37:26,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:26,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:26,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:26,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:37:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:26,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:26,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:26,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:26,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:26,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:37:26,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:26,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:26,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 08:37:26,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88452243] [2020-10-28 08:37:26,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:26,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 08:37:26,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640891334] [2020-10-28 08:37:26,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 08:37:26,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:26,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 08:37:26,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2020-10-28 08:37:26,368 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand 29 states. [2020-10-28 08:37:27,900 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-28 08:37:28,081 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-28 08:37:28,747 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 112 [2020-10-28 08:37:28,946 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-28 08:37:29,423 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 53 [2020-10-28 08:37:29,838 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 83 [2020-10-28 08:37:30,265 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 94 [2020-10-28 08:37:30,751 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 101 [2020-10-28 08:37:31,015 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 63 [2020-10-28 08:37:31,239 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 46 [2020-10-28 08:37:31,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:31,950 INFO L93 Difference]: Finished difference Result 124 states and 156 transitions. [2020-10-28 08:37:31,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 08:37:31,951 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 70 [2020-10-28 08:37:31,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:31,953 INFO L225 Difference]: With dead ends: 124 [2020-10-28 08:37:31,953 INFO L226 Difference]: Without dead ends: 118 [2020-10-28 08:37:31,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=317, Invalid=2233, Unknown=0, NotChecked=0, Total=2550 [2020-10-28 08:37:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-28 08:37:31,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 92. [2020-10-28 08:37:31,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-28 08:37:31,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2020-10-28 08:37:31,972 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 70 [2020-10-28 08:37:31,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:31,972 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2020-10-28 08:37:31,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 08:37:31,972 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2020-10-28 08:37:31,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 08:37:31,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:31,973 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-10-28 08:37:31,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 08:37:31,973 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:31,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:31,974 INFO L82 PathProgramCache]: Analyzing trace with hash -170077287, now seen corresponding path program 6 times [2020-10-28 08:37:31,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:31,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108650248] [2020-10-28 08:37:31,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:31,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:32,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:32,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:32,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:33,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:34,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:34,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:35,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:35,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:35,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:35,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:36,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:36,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 08:37:36,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 08:37:36,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:37:36,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:36,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:36,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 08:37:36,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:37:36,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 08:37:36,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:39,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:39,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:39,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:39,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:39,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:37:39,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:39,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:39,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:39,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:39,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:37:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:39,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:39,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:39,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:39,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:39,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:39,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:39,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:39,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:39,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:39,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:39,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:37:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:39,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:39,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:39,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:39,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:39,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:37:39,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:39,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:39,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:39,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:37:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:39,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:39,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:39,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:39,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:39,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:37:39,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:39,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:39,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:39,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:37:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:39,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:39,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:39,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:39,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:39,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:37:39,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:39,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:39,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:39,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:37:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:39,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:39,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:39,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:39,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:39,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:37:39,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:39,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:39,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:39,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:39,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 08:37:39,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108650248] [2020-10-28 08:37:39,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:39,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 08:37:39,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517214462] [2020-10-28 08:37:39,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 08:37:39,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:39,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 08:37:39,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2020-10-28 08:37:39,422 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand 28 states. [2020-10-28 08:37:40,081 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-10-28 08:37:41,284 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-28 08:37:41,931 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-10-28 08:37:42,177 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-28 08:37:42,443 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-28 08:37:43,200 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-28 08:37:43,534 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-28 08:37:43,854 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-28 08:37:44,070 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-28 08:37:44,459 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2020-10-28 08:37:44,684 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-10-28 08:37:45,160 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-28 08:37:46,294 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-28 08:37:46,492 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-28 08:37:46,894 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-28 08:37:46,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:46,944 INFO L93 Difference]: Finished difference Result 148 states and 192 transitions. [2020-10-28 08:37:46,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-28 08:37:46,946 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 70 [2020-10-28 08:37:46,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:46,948 INFO L225 Difference]: With dead ends: 148 [2020-10-28 08:37:46,948 INFO L226 Difference]: Without dead ends: 142 [2020-10-28 08:37:46,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=713, Invalid=3843, Unknown=0, NotChecked=0, Total=4556 [2020-10-28 08:37:46,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-28 08:37:46,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 92. [2020-10-28 08:37:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-28 08:37:46,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2020-10-28 08:37:46,971 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 70 [2020-10-28 08:37:46,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:46,971 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2020-10-28 08:37:46,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 08:37:46,972 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2020-10-28 08:37:46,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 08:37:46,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:46,973 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-10-28 08:37:46,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 08:37:46,973 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:46,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:46,974 INFO L82 PathProgramCache]: Analyzing trace with hash 158531675, now seen corresponding path program 7 times [2020-10-28 08:37:46,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:46,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021700163] [2020-10-28 08:37:46,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:47,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:47,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:47,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:48,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:48,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:49,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:49,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:49,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:50,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:50,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:51,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:51,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:51,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:51,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 08:37:51,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 08:37:51,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 08:37:51,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:51,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 08:37:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:37:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 08:37:51,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:53,081 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-10-28 08:37:53,275 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2020-10-28 08:37:53,454 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-10-28 08:37:53,628 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2020-10-28 08:37:54,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:54,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:37:54,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:54,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:54,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:54,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:37:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:54,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:54,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:54,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:54,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:54,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:37:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:54,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:54,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:54,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:37:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:54,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:54,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:54,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:54,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:54,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:37:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:54,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:37:54,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:54,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:54,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:37:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:54,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:37:54,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 08:37:54,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021700163] [2020-10-28 08:37:54,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:54,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 08:37:54,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058942089] [2020-10-28 08:37:54,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 08:37:54,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:54,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 08:37:54,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2020-10-28 08:37:54,495 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand 30 states. [2020-10-28 08:37:56,548 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-28 08:37:56,865 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-28 08:37:57,054 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-28 08:37:57,296 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-28 08:37:57,582 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-10-28 08:37:57,829 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-10-28 08:37:58,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:58,767 INFO L93 Difference]: Finished difference Result 153 states and 193 transitions. [2020-10-28 08:37:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 08:37:58,768 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2020-10-28 08:37:58,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:58,770 INFO L225 Difference]: With dead ends: 153 [2020-10-28 08:37:58,770 INFO L226 Difference]: Without dead ends: 147 [2020-10-28 08:37:58,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=358, Invalid=3064, Unknown=0, NotChecked=0, Total=3422 [2020-10-28 08:37:58,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-28 08:37:58,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 98. [2020-10-28 08:37:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-28 08:37:58,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2020-10-28 08:37:58,796 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 70 [2020-10-28 08:37:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:58,796 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2020-10-28 08:37:58,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 08:37:58,796 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2020-10-28 08:37:58,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 08:37:58,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:58,797 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-10-28 08:37:58,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 08:37:58,798 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:58,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:58,798 INFO L82 PathProgramCache]: Analyzing trace with hash 24518169, now seen corresponding path program 8 times [2020-10-28 08:37:58,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:58,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042172193] [2020-10-28 08:37:58,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:58,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:59,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:59,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:59,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:01,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:01,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:02,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:02,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:02,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:03,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:03,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:03,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 08:38:03,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 08:38:03,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 08:38:03,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:03,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:03,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 08:38:03,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:38:03,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 08:38:03,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:05,204 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2020-10-28 08:38:06,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:06,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:06,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:06,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:06,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:06,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:06,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:06,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:06,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:06,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:06,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:06,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:06,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:38:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:06,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:06,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:06,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:06,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:06,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:06,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:06,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:06,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:06,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:38:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:06,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:06,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:06,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:06,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:06,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:06,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:06,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:06,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:38:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:06,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:06,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:06,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:06,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:06,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:06,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:06,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:06,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:06,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:06,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:06,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:06,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:38:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:06,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:06,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:06,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:06,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:06,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:06,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:06,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:06,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:06,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:38:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:06,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:06,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:06,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:06,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:06,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:06,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:06,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:06,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 08:38:06,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042172193] [2020-10-28 08:38:06,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:06,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-28 08:38:06,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852245821] [2020-10-28 08:38:06,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-28 08:38:06,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:06,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-28 08:38:06,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=889, Unknown=0, NotChecked=0, Total=992 [2020-10-28 08:38:06,583 INFO L87 Difference]: Start difference. First operand 98 states and 128 transitions. Second operand 32 states. [2020-10-28 08:38:08,459 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-28 08:38:09,812 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-10-28 08:38:10,162 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-28 08:38:10,387 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-28 08:38:11,070 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-10-28 08:38:11,237 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-28 08:38:11,524 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-10-28 08:38:11,763 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-28 08:38:12,006 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-10-28 08:38:12,607 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 107 [2020-10-28 08:38:12,803 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-28 08:38:13,143 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2020-10-28 08:38:13,542 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-28 08:38:14,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:14,915 INFO L93 Difference]: Finished difference Result 188 states and 240 transitions. [2020-10-28 08:38:14,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-28 08:38:14,915 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 70 [2020-10-28 08:38:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:14,918 INFO L225 Difference]: With dead ends: 188 [2020-10-28 08:38:14,918 INFO L226 Difference]: Without dead ends: 182 [2020-10-28 08:38:14,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=731, Invalid=5121, Unknown=0, NotChecked=0, Total=5852 [2020-10-28 08:38:14,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-28 08:38:14,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 92. [2020-10-28 08:38:14,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-28 08:38:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2020-10-28 08:38:14,942 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 70 [2020-10-28 08:38:14,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:14,943 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2020-10-28 08:38:14,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-28 08:38:14,943 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2020-10-28 08:38:14,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 08:38:14,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:14,944 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-10-28 08:38:14,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 08:38:14,944 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:14,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:14,945 INFO L82 PathProgramCache]: Analyzing trace with hash -2085451623, now seen corresponding path program 9 times [2020-10-28 08:38:14,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:14,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683097556] [2020-10-28 08:38:14,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:14,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:15,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:15,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:16,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:16,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:16,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:17,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:17,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:18,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:18,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:19,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:19,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:19,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:19,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 08:38:19,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 08:38:19,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 08:38:19,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:19,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 08:38:19,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:38:19,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 08:38:19,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:21,206 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2020-10-28 08:38:21,415 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 47 [2020-10-28 08:38:21,605 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-10-28 08:38:21,795 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-10-28 08:38:22,001 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-10-28 08:38:22,258 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-10-28 08:38:23,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:23,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:23,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:23,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:23,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:23,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:38:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:23,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:23,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:23,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:38:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:23,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:38:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:23,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:23,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:38:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:38:23,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:23,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:38:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:38:23,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:23,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 08:38:23,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683097556] [2020-10-28 08:38:23,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:23,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 08:38:23,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450615788] [2020-10-28 08:38:23,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 08:38:23,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:23,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 08:38:23,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2020-10-28 08:38:23,131 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand 30 states. [2020-10-28 08:38:25,349 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-10-28 08:38:25,981 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-10-28 08:38:26,418 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2020-10-28 08:38:26,835 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-10-28 08:38:27,023 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-28 08:38:27,308 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 51 [2020-10-28 08:38:27,601 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 64 [2020-10-28 08:38:27,935 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 59 [2020-10-28 08:38:28,142 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 58 [2020-10-28 08:38:28,551 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2020-10-28 08:38:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:29,284 INFO L93 Difference]: Finished difference Result 153 states and 193 transitions. [2020-10-28 08:38:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-28 08:38:29,285 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2020-10-28 08:38:29,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:29,286 INFO L225 Difference]: With dead ends: 153 [2020-10-28 08:38:29,287 INFO L226 Difference]: Without dead ends: 147 [2020-10-28 08:38:29,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=428, Invalid=3354, Unknown=0, NotChecked=0, Total=3782 [2020-10-28 08:38:29,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-28 08:38:29,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 96. [2020-10-28 08:38:29,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-28 08:38:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 126 transitions. [2020-10-28 08:38:29,310 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 126 transitions. Word has length 70 [2020-10-28 08:38:29,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:29,310 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 126 transitions. [2020-10-28 08:38:29,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 08:38:29,311 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 126 transitions. [2020-10-28 08:38:29,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 08:38:29,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:29,312 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:29,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 08:38:29,312 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:29,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:29,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2075502167, now seen corresponding path program 3 times [2020-10-28 08:38:29,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:29,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144063949] [2020-10-28 08:38:29,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:29,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:29,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:30,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:30,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:30,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:31,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:31,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:31,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:32,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:32,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:33,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:33,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:34,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:34,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:34,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:34,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 08:38:34,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 08:38:34,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-28 08:38:34,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:34,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:34,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 08:38:34,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:38:34,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 08:38:34,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:35,021 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-10-28 08:38:35,260 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-28 08:38:35,413 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-10-28 08:38:35,567 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-28 08:38:35,726 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-28 08:38:35,902 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-10-28 08:38:36,236 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2020-10-28 08:38:36,471 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2020-10-28 08:38:36,666 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-10-28 08:38:36,879 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2020-10-28 08:38:37,061 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-10-28 08:38:37,261 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-28 08:38:38,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:38,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:38,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:38,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:38,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:38,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:38,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:38,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:38,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:38,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:38,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:38,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:38,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:38:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:38,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:38,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:38,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:38,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:38,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:38,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:38,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:38,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:38,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:38:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:38,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:38,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:38,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:38,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:38,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:38,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:38,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:38,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:38,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:38,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:38,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:38,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:38:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:38,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:38,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:38,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:38,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:38,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:38,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:38,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:38,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:38,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:38:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:38,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:38,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:38,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:38,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:38,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:38:38,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:38,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:38,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:38,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:38,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:38:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:38,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:38,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:38,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:38,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:38,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:38:38,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:38,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:38,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 08:38:38,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144063949] [2020-10-28 08:38:38,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:38,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-28 08:38:38,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508760538] [2020-10-28 08:38:38,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-28 08:38:38,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:38,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-28 08:38:38,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2020-10-28 08:38:38,393 INFO L87 Difference]: Start difference. First operand 96 states and 126 transitions. Second operand 32 states. [2020-10-28 08:38:40,649 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-10-28 08:38:40,984 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-10-28 08:38:42,126 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 116 [2020-10-28 08:38:42,452 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 40 [2020-10-28 08:38:42,788 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 49 [2020-10-28 08:38:43,175 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 79 [2020-10-28 08:38:43,605 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 84 [2020-10-28 08:38:43,975 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2020-10-28 08:38:44,424 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 91 [2020-10-28 08:38:44,787 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2020-10-28 08:38:45,667 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 118 [2020-10-28 08:38:45,987 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 48 [2020-10-28 08:38:46,478 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 87 [2020-10-28 08:38:46,857 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 61 [2020-10-28 08:38:47,057 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 54 [2020-10-28 08:38:47,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:47,723 INFO L93 Difference]: Finished difference Result 149 states and 189 transitions. [2020-10-28 08:38:47,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-28 08:38:47,725 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 70 [2020-10-28 08:38:47,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:47,726 INFO L225 Difference]: With dead ends: 149 [2020-10-28 08:38:47,726 INFO L226 Difference]: Without dead ends: 143 [2020-10-28 08:38:47,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=488, Invalid=3418, Unknown=0, NotChecked=0, Total=3906 [2020-10-28 08:38:47,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-28 08:38:47,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 96. [2020-10-28 08:38:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-28 08:38:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 126 transitions. [2020-10-28 08:38:47,762 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 126 transitions. Word has length 70 [2020-10-28 08:38:47,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:47,762 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 126 transitions. [2020-10-28 08:38:47,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-28 08:38:47,762 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 126 transitions. [2020-10-28 08:38:47,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 08:38:47,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:47,764 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:47,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 08:38:47,764 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:47,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:47,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1126079329, now seen corresponding path program 7 times [2020-10-28 08:38:47,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:47,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993823623] [2020-10-28 08:38:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:47,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:47,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:48,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:48,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:49,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:49,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:50,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:51,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:51,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:51,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 08:38:52,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 08:38:52,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 08:38:52,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:38:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:38:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 08:38:52,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:52,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:38:52,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:38:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:38:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:52,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:38:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:52,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:52,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:52,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:38:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:52,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:52,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:52,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:38:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:52,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 21 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-28 08:38:53,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993823623] [2020-10-28 08:38:53,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:53,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:38:53,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698899847] [2020-10-28 08:38:53,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:38:53,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:53,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:38:53,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:38:53,002 INFO L87 Difference]: Start difference. First operand 96 states and 126 transitions. Second operand 12 states. [2020-10-28 08:38:53,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:53,614 INFO L93 Difference]: Finished difference Result 165 states and 208 transitions. [2020-10-28 08:38:53,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:38:53,617 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-10-28 08:38:53,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:53,619 INFO L225 Difference]: With dead ends: 165 [2020-10-28 08:38:53,619 INFO L226 Difference]: Without dead ends: 131 [2020-10-28 08:38:53,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:38:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-28 08:38:53,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 110. [2020-10-28 08:38:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-28 08:38:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 140 transitions. [2020-10-28 08:38:53,650 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 140 transitions. Word has length 72 [2020-10-28 08:38:53,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:53,651 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 140 transitions. [2020-10-28 08:38:53,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:38:53,651 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 140 transitions. [2020-10-28 08:38:53,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 08:38:53,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:53,652 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:53,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 08:38:53,652 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:53,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:53,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1427108467, now seen corresponding path program 8 times [2020-10-28 08:38:53,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:53,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363794471] [2020-10-28 08:38:53,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:53,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:53,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:54,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:54,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:54,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:54,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:55,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:55,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:55,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:55,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:55,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:55,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:56,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:56,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:56,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:56,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:58,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:58,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:58,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:58,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 08:38:58,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 08:38:58,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:38:58,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:58,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:58,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:38:58,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:38:58,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 08:38:58,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:59,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:59,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:38:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:38:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:59,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:59,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:38:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:38:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:38:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:59,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 08:38:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:59,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-28 08:38:59,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363794471] [2020-10-28 08:38:59,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:59,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:38:59,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994870956] [2020-10-28 08:38:59,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:38:59,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:59,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:38:59,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:38:59,093 INFO L87 Difference]: Start difference. First operand 110 states and 140 transitions. Second operand 17 states. [2020-10-28 08:39:00,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:00,497 INFO L93 Difference]: Finished difference Result 184 states and 229 transitions. [2020-10-28 08:39:00,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 08:39:00,499 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 80 [2020-10-28 08:39:00,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:00,502 INFO L225 Difference]: With dead ends: 184 [2020-10-28 08:39:00,502 INFO L226 Difference]: Without dead ends: 170 [2020-10-28 08:39:00,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=238, Invalid=754, Unknown=0, NotChecked=0, Total=992 [2020-10-28 08:39:00,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-28 08:39:00,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 126. [2020-10-28 08:39:00,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-28 08:39:00,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 164 transitions. [2020-10-28 08:39:00,535 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 164 transitions. Word has length 80 [2020-10-28 08:39:00,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:00,535 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 164 transitions. [2020-10-28 08:39:00,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:39:00,535 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 164 transitions. [2020-10-28 08:39:00,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 08:39:00,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:00,537 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:00,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 08:39:00,537 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:00,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:00,537 INFO L82 PathProgramCache]: Analyzing trace with hash 623875531, now seen corresponding path program 10 times [2020-10-28 08:39:00,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:00,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403680518] [2020-10-28 08:39:00,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:00,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:00,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:01,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:01,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:01,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:01,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:01,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:02,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:02,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:02,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:03,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:03,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:03,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:03,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:04,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:04,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:04,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:04,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:04,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:04,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:05,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:05,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 08:39:05,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-28 08:39:05,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 08:39:05,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:05,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:05,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:39:05,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:39:05,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 08:39:05,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:05,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:05,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:05,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:05,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:05,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:05,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:39:05,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:05,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:05,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:05,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:05,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:05,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:39:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:05,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:05,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:05,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:05,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:05,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:05,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:05,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:05,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:05,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:39:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:05,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:05,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:05,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:05,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:05,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:05,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:05,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:05,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:05,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:05,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:05,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:05,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:39:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:05,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:05,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:05,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:05,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:05,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:05,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:05,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:05,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:05,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:05,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:05,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:05,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:39:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:05,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:05,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:05,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:05,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:05,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:05,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:05,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:05,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:05,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:05,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:05,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:05,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:39:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:05,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:05,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:05,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:05,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:05,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:05,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:05,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:05,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:05,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 08:39:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:05,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:05,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:05,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:05,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:05,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:05,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:05,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:05,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:05,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:05,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:05,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-28 08:39:05,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403680518] [2020-10-28 08:39:05,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:05,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:39:05,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755991955] [2020-10-28 08:39:05,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:39:05,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:05,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:39:05,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:39:05,800 INFO L87 Difference]: Start difference. First operand 126 states and 164 transitions. Second operand 12 states. [2020-10-28 08:39:06,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:06,623 INFO L93 Difference]: Finished difference Result 139 states and 177 transitions. [2020-10-28 08:39:06,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:39:06,624 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-28 08:39:06,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:06,626 INFO L225 Difference]: With dead ends: 139 [2020-10-28 08:39:06,626 INFO L226 Difference]: Without dead ends: 125 [2020-10-28 08:39:06,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-10-28 08:39:06,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-28 08:39:06,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 65. [2020-10-28 08:39:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 08:39:06,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-10-28 08:39:06,649 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 80 [2020-10-28 08:39:06,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:06,649 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-10-28 08:39:06,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:39:06,649 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-10-28 08:39:06,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 08:39:06,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:06,650 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:06,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 08:39:06,651 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:06,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:06,651 INFO L82 PathProgramCache]: Analyzing trace with hash 881300177, now seen corresponding path program 9 times [2020-10-28 08:39:06,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:06,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423458084] [2020-10-28 08:39:06,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:06,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:06,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:07,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:10,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:11,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:11,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:11,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 08:39:11,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:39:11,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 08:39:11,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:11,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:11,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-28 08:39:11,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:39:11,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 08:39:11,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:11,941 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 19 [2020-10-28 08:39:12,081 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 27 [2020-10-28 08:39:12,926 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-10-28 08:39:13,097 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2020-10-28 08:39:13,315 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2020-10-28 08:39:13,515 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2020-10-28 08:39:13,832 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-10-28 08:39:14,096 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2020-10-28 08:39:14,358 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2020-10-28 08:39:14,649 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2020-10-28 08:39:14,923 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2020-10-28 08:39:15,157 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2020-10-28 08:39:15,808 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-28 08:39:17,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:17,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:17,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:17,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:17,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:17,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:39:17,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:17,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:17,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:17,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:39:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:17,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:17,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:17,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:17,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:17,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:39:17,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:17,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:17,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:17,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:39:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:17,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:17,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:17,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:17,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:17,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:17,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:17,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:17,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:17,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:17,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:17,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:17,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:39:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:17,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:17,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:17,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:17,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:17,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:39:17,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:17,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:17,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:17,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:39:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:17,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:17,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:17,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:17,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:17,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:39:17,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:17,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:17,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:17,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:39:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:17,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:17,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:17,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:17,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:17,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:39:17,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:17,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:17,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:17,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:17,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:17,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:17,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 08:39:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:17,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:17,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:17,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:17,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:17,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:39:17,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:17,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-28 08:39:17,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423458084] [2020-10-28 08:39:17,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:17,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-28 08:39:17,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23764789] [2020-10-28 08:39:17,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-28 08:39:17,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:17,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-28 08:39:17,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1316, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 08:39:17,098 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 38 states.