/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/bitvector/byte_add_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:14:13,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:14:13,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:14:13,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:14:13,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:14:13,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:14:13,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:14:13,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:14:13,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:14:13,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:14:13,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:14:13,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:14:13,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:14:13,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:14:13,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:14:13,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:14:13,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:14:13,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:14:13,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:14:13,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:14:13,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:14:13,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:14:13,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:14:13,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:14:13,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:14:13,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:14:13,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:14:13,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:14:13,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:14:13,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:14:13,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:14:13,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:14:13,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:14:13,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:14:13,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:14:13,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:14:13,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:14:13,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:14:13,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:14:13,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:14:13,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:14:13,681 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 [2020-10-29 04:14:13,733 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:14:13,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:14:13,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:14:13,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:14:13,738 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:14:13,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:14:13,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:14:13,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:14:13,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:14:13,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:14:13,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:14:13,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:14:13,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:14:13,741 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:14:13,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:14:13,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:14:13,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:14:13,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:14:13,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:14:13,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:14:13,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:14:13,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:14:13,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:14:13,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:14:13,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:14:13,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:14:13,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:14:13,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:14:13,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:14:13,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:14:14,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:14:14,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:14:14,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:14:14,234 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:14:14,235 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:14:14,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add_1-1.i [2020-10-29 04:14:14,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01580fc61/47e559f77fb74016bd3e216e50f5825f/FLAG223ee3304 [2020-10-29 04:14:15,093 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:14:15,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/byte_add_1-1.i [2020-10-29 04:14:15,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01580fc61/47e559f77fb74016bd3e216e50f5825f/FLAG223ee3304 [2020-10-29 04:14:15,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01580fc61/47e559f77fb74016bd3e216e50f5825f [2020-10-29 04:14:15,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:14:15,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:14:15,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:14:15,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:14:15,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:14:15,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:14:15" (1/1) ... [2020-10-29 04:14:15,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5910915d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:15, skipping insertion in model container [2020-10-29 04:14:15,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:14:15" (1/1) ... [2020-10-29 04:14:15,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:14:15,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:14:15,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:14:15,702 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:14:15,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:14:15,829 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:14:15,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:15 WrapperNode [2020-10-29 04:14:15,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:14:15,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:14:15,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:14:15,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:14:15,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:15" (1/1) ... [2020-10-29 04:14:15,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:15" (1/1) ... [2020-10-29 04:14:15,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:15" (1/1) ... [2020-10-29 04:14:15,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:15" (1/1) ... [2020-10-29 04:14:15,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:15" (1/1) ... [2020-10-29 04:14:15,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:15" (1/1) ... [2020-10-29 04:14:15,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:15" (1/1) ... [2020-10-29 04:14:15,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:14:15,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:14:15,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:14:15,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:14:15,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:15" (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 [2020-10-29 04:14:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:14:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:14:15,982 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:14:15,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 04:14:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_add [2020-10-29 04:14:15,984 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:14:15,984 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:14:15,984 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:14:15,984 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 04:14:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 04:14:15,986 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:14:15,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:14:15,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-29 04:14:15,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 04:14:15,987 INFO L130 BoogieDeclarations]: Found specification of procedure mp_add [2020-10-29 04:14:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:14:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:14:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:14:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:14:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:14:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:14:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:14:16,701 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:14:16,702 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 04:14:16,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:14:16 BoogieIcfgContainer [2020-10-29 04:14:16,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:14:16,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:14:16,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:14:16,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:14:16,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:14:15" (1/3) ... [2020-10-29 04:14:16,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb1d1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:14:16, skipping insertion in model container [2020-10-29 04:14:16,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:15" (2/3) ... [2020-10-29 04:14:16,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb1d1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:14:16, skipping insertion in model container [2020-10-29 04:14:16,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:14:16" (3/3) ... [2020-10-29 04:14:16,714 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i [2020-10-29 04:14:16,728 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:14:16,735 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:14:16,750 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:14:16,782 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:14:16,782 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:14:16,782 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:14:16,782 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:14:16,782 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:14:16,783 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:14:16,783 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:14:16,783 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:14:16,804 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-29 04:14:16,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 04:14:16,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:16,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:16,813 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:16,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:16,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1266705012, now seen corresponding path program 1 times [2020-10-29 04:14:16,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:16,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468472447] [2020-10-29 04:14:16,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:17,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:17,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:17,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:17,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 04:14:17,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:14:17,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-29 04:14:17,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:17,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:14:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 04:14:17,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:14:17,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:17,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:17,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:17,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:17,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:17,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:14:17,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:17,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:17,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:17,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:17,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:14:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:17,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:17,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:17,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:17,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:14:17,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:14:17,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 04:14:17,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:17,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:17,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:17,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:14:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 04:14:17,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:14:17,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468472447] [2020-10-29 04:14:17,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:14:17,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:14:17,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384939889] [2020-10-29 04:14:17,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:14:17,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:17,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:14:17,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:14:17,882 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-10-29 04:14:18,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:18,347 INFO L93 Difference]: Finished difference Result 124 states and 203 transitions. [2020-10-29 04:14:18,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:14:18,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-29 04:14:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:18,360 INFO L225 Difference]: With dead ends: 124 [2020-10-29 04:14:18,360 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 04:14:18,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:14:18,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 04:14:18,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-10-29 04:14:18,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 04:14:18,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 101 transitions. [2020-10-29 04:14:18,418 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 101 transitions. Word has length 24 [2020-10-29 04:14:18,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:18,419 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 101 transitions. [2020-10-29 04:14:18,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:14:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 101 transitions. [2020-10-29 04:14:18,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 04:14:18,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:18,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:18,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:14:18,422 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:18,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:18,423 INFO L82 PathProgramCache]: Analyzing trace with hash -992029496, now seen corresponding path program 1 times [2020-10-29 04:14:18,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:18,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751058142] [2020-10-29 04:14:18,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:18,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:19,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:19,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:19,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:19,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 04:14:19,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:14:19,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1127 [2020-10-29 04:14:19,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:19,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:19,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:14:19,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 04:14:19,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 04:14:19,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:19,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:19,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:19,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:19,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:19,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:19,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:14:19,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:19,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:19,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:19,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:14:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:19,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:19,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:19,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:19,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:19,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:19,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:19,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:19,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:20,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:20,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 04:14:20,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:14:20,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-29 04:14:20,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:20,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:14:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:14:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 04:14:20,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:14:20,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751058142] [2020-10-29 04:14:20,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:14:20,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 04:14:20,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271352782] [2020-10-29 04:14:20,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:14:20,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:20,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:14:20,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:14:20,198 INFO L87 Difference]: Start difference. First operand 71 states and 101 transitions. Second operand 5 states. [2020-10-29 04:14:20,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:20,699 INFO L93 Difference]: Finished difference Result 175 states and 262 transitions. [2020-10-29 04:14:20,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:14:20,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-29 04:14:20,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:20,704 INFO L225 Difference]: With dead ends: 175 [2020-10-29 04:14:20,704 INFO L226 Difference]: Without dead ends: 124 [2020-10-29 04:14:20,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:14:20,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-29 04:14:20,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 117. [2020-10-29 04:14:20,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 04:14:20,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 170 transitions. [2020-10-29 04:14:20,729 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 170 transitions. Word has length 30 [2020-10-29 04:14:20,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:20,729 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 170 transitions. [2020-10-29 04:14:20,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:14:20,729 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 170 transitions. [2020-10-29 04:14:20,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 04:14:20,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:20,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:20,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:14:20,735 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:20,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:20,736 INFO L82 PathProgramCache]: Analyzing trace with hash 343543299, now seen corresponding path program 1 times [2020-10-29 04:14:20,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:20,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789515561] [2020-10-29 04:14:20,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:20,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:20,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:20,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:20,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:20,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:21,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:21,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:22,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:22,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 04:14:22,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 04:14:22,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2141 [2020-10-29 04:14:22,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:22,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:14:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 04:14:22,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 04:14:22,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:22,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:22,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:22,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:22,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:22,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:14:22,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:22,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:22,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:22,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:22,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:14:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:22,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:22,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:14:23,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:14:23,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 874 [2020-10-29 04:14:23,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:14:23,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 04:14:23,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 04:14:23,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:14:23,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789515561] [2020-10-29 04:14:23,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:23,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:14:23,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908701996] [2020-10-29 04:14:23,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:14:23,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:23,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:14:23,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:14:23,922 INFO L87 Difference]: Start difference. First operand 117 states and 170 transitions. Second operand 5 states. [2020-10-29 04:14:24,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:24,341 INFO L93 Difference]: Finished difference Result 236 states and 366 transitions. [2020-10-29 04:14:24,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:14:24,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-29 04:14:24,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:24,345 INFO L225 Difference]: With dead ends: 236 [2020-10-29 04:14:24,346 INFO L226 Difference]: Without dead ends: 173 [2020-10-29 04:14:24,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:14:24,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-29 04:14:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 158. [2020-10-29 04:14:24,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-29 04:14:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 232 transitions. [2020-10-29 04:14:24,370 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 232 transitions. Word has length 31 [2020-10-29 04:14:24,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:24,371 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 232 transitions. [2020-10-29 04:14:24,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:14:24,371 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 232 transitions. [2020-10-29 04:14:24,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 04:14:24,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:24,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:24,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:14:24,374 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:24,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:24,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1011651050, now seen corresponding path program 1 times [2020-10-29 04:14:24,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:24,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714357611] [2020-10-29 04:14:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:24,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:24,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:24,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:24,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:24,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:24,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:24,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:24,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:25,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:25,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:28,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:28,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:29,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:29,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 04:14:29,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-29 04:14:29,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 04:14:29,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:29,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:29,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:14:29,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 04:14:29,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:14:29,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:29,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:29,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:29,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:29,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:29,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:29,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:14:29,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:29,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:29,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:29,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:14:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:29,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:29,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:29,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:29,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:29,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:29,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:29,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:29,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:29,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:29,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:29,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:29,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:30,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:30,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:30,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:30,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:30,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:30,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:30,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:31,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:31,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:31,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:32,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:32,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:14:32,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-29 04:14:32,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3362 [2020-10-29 04:14:32,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:32,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:32,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:14:32,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 04:14:32,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:14:32,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:14:32,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714357611] [2020-10-29 04:14:32,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:32,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:14:32,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19189326] [2020-10-29 04:14:32,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:14:32,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:32,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:14:32,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:14:32,939 INFO L87 Difference]: Start difference. First operand 158 states and 232 transitions. Second operand 6 states. [2020-10-29 04:14:33,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:33,626 INFO L93 Difference]: Finished difference Result 336 states and 519 transitions. [2020-10-29 04:14:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:14:33,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-29 04:14:33,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:33,634 INFO L225 Difference]: With dead ends: 336 [2020-10-29 04:14:33,635 INFO L226 Difference]: Without dead ends: 240 [2020-10-29 04:14:33,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:14:33,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-29 04:14:33,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 224. [2020-10-29 04:14:33,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-29 04:14:33,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 326 transitions. [2020-10-29 04:14:33,694 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 326 transitions. Word has length 37 [2020-10-29 04:14:33,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:33,697 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 326 transitions. [2020-10-29 04:14:33,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:14:33,697 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 326 transitions. [2020-10-29 04:14:33,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 04:14:33,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:33,699 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-29 04:14:33,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:14:33,700 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:33,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:33,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1748860329, now seen corresponding path program 1 times [2020-10-29 04:14:33,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:33,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751497488] [2020-10-29 04:14:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:33,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:33,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:33,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:33,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:33,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:33,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:34,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:34,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:34,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:34,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:34,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:36,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:36,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:36,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:36,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:36,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:37,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:37,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:37,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:37,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:37,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:37,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:37,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:37,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:37,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:37,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:37,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:37,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:37,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:38,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 04:14:38,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-29 04:14:38,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:14:38,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:38,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:38,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:14:38,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 04:14:38,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 04:14:38,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:38,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:38,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:38,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:38,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:38,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:38,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:38,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:38,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:38,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:38,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:38,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:38,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:14:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:38,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:41,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:41,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:41,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:41,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:41,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:41,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:43,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 04:14:43,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 64 [2020-10-29 04:14:43,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:14:43,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:43,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:14:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 04:14:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:14:43,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:14:43,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751497488] [2020-10-29 04:14:43,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:43,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:14:43,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883778149] [2020-10-29 04:14:43,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:14:43,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:43,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:14:43,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:14:43,962 INFO L87 Difference]: Start difference. First operand 224 states and 326 transitions. Second operand 6 states. [2020-10-29 04:14:44,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:44,648 INFO L93 Difference]: Finished difference Result 390 states and 579 transitions. [2020-10-29 04:14:44,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:14:44,649 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-10-29 04:14:44,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:44,651 INFO L225 Difference]: With dead ends: 390 [2020-10-29 04:14:44,651 INFO L226 Difference]: Without dead ends: 230 [2020-10-29 04:14:44,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:14:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-29 04:14:44,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2020-10-29 04:14:44,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-29 04:14:44,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 304 transitions. [2020-10-29 04:14:44,685 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 304 transitions. Word has length 43 [2020-10-29 04:14:44,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:44,685 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 304 transitions. [2020-10-29 04:14:44,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:14:44,686 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 304 transitions. [2020-10-29 04:14:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 04:14:44,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:44,690 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:44,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:14:44,691 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:44,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:44,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1738909225, now seen corresponding path program 1 times [2020-10-29 04:14:44,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:44,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682348572] [2020-10-29 04:14:44,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:44,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:44,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:44,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:44,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:44,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:44,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:44,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:44,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:45,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:45,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:47,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:47,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:47,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:47,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:47,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:47,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:47,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:47,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:47,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:48,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:48,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:48,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:48,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:48,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:48,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:48,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:48,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:48,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:48,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:49,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:49,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 04:14:49,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 44 [2020-10-29 04:14:49,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:14:49,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:49,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:49,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:14:49,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 04:14:49,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 04:14:49,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:49,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:49,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:49,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:49,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:49,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:49,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:49,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:49,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:49,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:49,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:14:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:49,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:49,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:49,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:49,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:49,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:49,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:49,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:52,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:52,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:52,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:52,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:54,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:54,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 04:14:54,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 43 [2020-10-29 04:14:54,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:14:54,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:54,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:54,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:14:54,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 04:14:54,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 04:14:54,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:14:54,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682348572] [2020-10-29 04:14:54,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:54,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:14:54,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924184872] [2020-10-29 04:14:54,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:14:54,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:54,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:14:54,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:14:54,866 INFO L87 Difference]: Start difference. First operand 224 states and 304 transitions. Second operand 7 states. [2020-10-29 04:14:55,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:55,640 INFO L93 Difference]: Finished difference Result 287 states and 401 transitions. [2020-10-29 04:14:55,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:14:55,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-10-29 04:14:55,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:55,642 INFO L225 Difference]: With dead ends: 287 [2020-10-29 04:14:55,643 INFO L226 Difference]: Without dead ends: 275 [2020-10-29 04:14:55,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:14:55,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-29 04:14:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 233. [2020-10-29 04:14:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-29 04:14:55,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 314 transitions. [2020-10-29 04:14:55,659 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 314 transitions. Word has length 43 [2020-10-29 04:14:55,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:55,659 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 314 transitions. [2020-10-29 04:14:55,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:14:55,659 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 314 transitions. [2020-10-29 04:14:55,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 04:14:55,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:55,662 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-29 04:14:55,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:14:55,663 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:55,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:55,663 INFO L82 PathProgramCache]: Analyzing trace with hash 196126270, now seen corresponding path program 2 times [2020-10-29 04:14:55,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:55,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73210090] [2020-10-29 04:14:55,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:55,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:55,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:55,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:55,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:55,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:55,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:55,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:55,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:55,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:00,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 04:15:00,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 106 [2020-10-29 04:15:00,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:15:00,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:00,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:00,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:15:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 04:15:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:15:00,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:00,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:00,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:00,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:00,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:00,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:15:00,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:00,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:00,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:00,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:00,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:00,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:00,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:15:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:00,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:00,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:01,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:02,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:03,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:03,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:03,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:05,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:05,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:05,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:05,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 04:15:05,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 65 [2020-10-29 04:15:05,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:15:05,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:05,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:15:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 04:15:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:15:05,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:15:05,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73210090] [2020-10-29 04:15:05,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:05,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:15:05,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928816471] [2020-10-29 04:15:05,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:15:05,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:05,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:15:05,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:15:05,870 INFO L87 Difference]: Start difference. First operand 233 states and 314 transitions. Second operand 7 states. [2020-10-29 04:15:06,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:06,862 INFO L93 Difference]: Finished difference Result 441 states and 622 transitions. [2020-10-29 04:15:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:15:06,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2020-10-29 04:15:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:06,868 INFO L225 Difference]: With dead ends: 441 [2020-10-29 04:15:06,868 INFO L226 Difference]: Without dead ends: 270 [2020-10-29 04:15:06,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:15:06,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-29 04:15:06,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 267. [2020-10-29 04:15:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-29 04:15:06,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 353 transitions. [2020-10-29 04:15:06,897 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 353 transitions. Word has length 49 [2020-10-29 04:15:06,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:06,897 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 353 transitions. [2020-10-29 04:15:06,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:15:06,897 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 353 transitions. [2020-10-29 04:15:06,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 04:15:06,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:06,900 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:06,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:15:06,901 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:06,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:06,901 INFO L82 PathProgramCache]: Analyzing trace with hash -238136070, now seen corresponding path program 1 times [2020-10-29 04:15:06,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:06,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963319562] [2020-10-29 04:15:06,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:06,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:06,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:06,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:09,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:10,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:10,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:10,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:10,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:10,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:10,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:10,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:10,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:11,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:11,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:11,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:11,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:11,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 04:15:11,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 52 [2020-10-29 04:15:11,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:15:11,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:11,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:15:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 04:15:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:15:11,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:11,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:11,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:11,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:11,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:11,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:11,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:15:11,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:11,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:11,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:15:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:11,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:11,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:14,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:14,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:14,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:14,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:14,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:14,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:14,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:14,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:14,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:15,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:16,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:16,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:16,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 04:15:16,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 51 [2020-10-29 04:15:16,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:15:16,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:16,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:16,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:15:16,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:15:16,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 04:15:16,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 23 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:15:17,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963319562] [2020-10-29 04:15:17,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:17,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:15:17,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102731304] [2020-10-29 04:15:17,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:15:17,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:17,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:15:17,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:15:17,082 INFO L87 Difference]: Start difference. First operand 267 states and 353 transitions. Second operand 8 states. [2020-10-29 04:15:18,415 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-10-29 04:15:19,604 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-29 04:15:20,196 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-29 04:15:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:20,860 INFO L93 Difference]: Finished difference Result 1003 states and 1448 transitions. [2020-10-29 04:15:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 04:15:20,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-10-29 04:15:20,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:20,865 INFO L225 Difference]: With dead ends: 1003 [2020-10-29 04:15:20,865 INFO L226 Difference]: Without dead ends: 761 [2020-10-29 04:15:20,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=258, Invalid=672, Unknown=0, NotChecked=0, Total=930 [2020-10-29 04:15:20,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-10-29 04:15:20,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 490. [2020-10-29 04:15:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-10-29 04:15:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 656 transitions. [2020-10-29 04:15:20,893 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 656 transitions. Word has length 49 [2020-10-29 04:15:20,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:20,893 INFO L481 AbstractCegarLoop]: Abstraction has 490 states and 656 transitions. [2020-10-29 04:15:20,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:15:20,893 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 656 transitions. [2020-10-29 04:15:20,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 04:15:20,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:20,896 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:20,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:15:20,896 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:20,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:20,897 INFO L82 PathProgramCache]: Analyzing trace with hash 294007178, now seen corresponding path program 1 times [2020-10-29 04:15:20,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:20,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977306958] [2020-10-29 04:15:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:20,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:20,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:20,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:20,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:20,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:20,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:21,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:21,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:21,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:21,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:21,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:21,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:21,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:21,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:22,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:22,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:22,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:22,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:22,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:22,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:23,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:23,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:23,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:23,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:25,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:25,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 04:15:25,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-29 04:15:25,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:15:25,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:25,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:15:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:15:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:15:25,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:25,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:25,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:25,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:25,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:25,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:25,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:15:25,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:25,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:25,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:25,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:25,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:25,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:25,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:15:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:25,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:25,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:27,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:27,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:27,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:28,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:28,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:28,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:28,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:28,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:28,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:28,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:28,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:28,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:28,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:29,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:29,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:30,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:30,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:30,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:30,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:30,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:30,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 04:15:30,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 65 [2020-10-29 04:15:30,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:15:30,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:30,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:15:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:15:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 04:15:30,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:31,110 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 23 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:15:31,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977306958] [2020-10-29 04:15:31,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:31,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:15:31,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032076432] [2020-10-29 04:15:31,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:15:31,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:31,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:15:31,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:15:31,113 INFO L87 Difference]: Start difference. First operand 490 states and 656 transitions. Second operand 10 states. [2020-10-29 04:15:31,874 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2020-10-29 04:15:32,006 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-10-29 04:15:34,735 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-10-29 04:15:34,878 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2020-10-29 04:15:35,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:35,590 INFO L93 Difference]: Finished difference Result 1270 states and 1754 transitions. [2020-10-29 04:15:35,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 04:15:35,590 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-29 04:15:35,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:35,595 INFO L225 Difference]: With dead ends: 1270 [2020-10-29 04:15:35,595 INFO L226 Difference]: Without dead ends: 834 [2020-10-29 04:15:35,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=323, Invalid=1083, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 04:15:35,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-10-29 04:15:35,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 718. [2020-10-29 04:15:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2020-10-29 04:15:35,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 929 transitions. [2020-10-29 04:15:35,638 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 929 transitions. Word has length 50 [2020-10-29 04:15:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:35,638 INFO L481 AbstractCegarLoop]: Abstraction has 718 states and 929 transitions. [2020-10-29 04:15:35,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:15:35,639 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 929 transitions. [2020-10-29 04:15:35,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 04:15:35,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:35,642 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:35,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:15:35,642 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:35,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:35,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1792472077, now seen corresponding path program 1 times [2020-10-29 04:15:35,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:35,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623624236] [2020-10-29 04:15:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:35,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:36,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:36,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:36,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:36,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:36,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:36,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:36,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:36,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:36,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:36,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:36,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:37,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:37,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:37,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:37,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:37,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:37,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:37,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:37,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:37,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:37,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:38,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:38,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:39,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:39,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:39,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:40,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:40,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 04:15:40,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-29 04:15:40,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:15:40,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:40,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:15:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:15:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:15:40,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:40,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:40,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:40,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:40,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:40,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:40,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:15:40,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:40,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:40,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:40,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:15:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:40,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:40,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:40,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:40,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:40,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:40,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:40,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:40,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:40,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:41,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:41,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:41,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:41,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:41,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:41,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:41,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:41,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:41,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:41,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:42,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:42,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:43,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:43,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:43,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:43,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:43,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:43,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:43,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:43,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:43,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:44,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:44,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:44,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:44,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:44,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:45,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:45,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:45,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:45,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:45,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:45,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 04:15:45,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-29 04:15:45,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 04:15:45,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:45,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:45,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:15:45,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:15:45,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:15:45,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:15:45,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623624236] [2020-10-29 04:15:45,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:45,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:15:45,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827393806] [2020-10-29 04:15:45,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:15:45,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:45,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:15:45,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:15:45,796 INFO L87 Difference]: Start difference. First operand 718 states and 929 transitions. Second operand 6 states. [2020-10-29 04:15:46,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:46,738 INFO L93 Difference]: Finished difference Result 2440 states and 3189 transitions. [2020-10-29 04:15:46,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 04:15:46,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-29 04:15:46,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:46,748 INFO L225 Difference]: With dead ends: 2440 [2020-10-29 04:15:46,748 INFO L226 Difference]: Without dead ends: 1746 [2020-10-29 04:15:46,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:15:46,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2020-10-29 04:15:46,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1550. [2020-10-29 04:15:46,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1550 states. [2020-10-29 04:15:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 1984 transitions. [2020-10-29 04:15:46,818 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 1984 transitions. Word has length 57 [2020-10-29 04:15:46,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:46,818 INFO L481 AbstractCegarLoop]: Abstraction has 1550 states and 1984 transitions. [2020-10-29 04:15:46,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:15:46,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 1984 transitions. [2020-10-29 04:15:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 04:15:46,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:46,820 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:46,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:15:46,821 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:46,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:46,821 INFO L82 PathProgramCache]: Analyzing trace with hash 90326879, now seen corresponding path program 1 times [2020-10-29 04:15:46,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:46,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109458500] [2020-10-29 04:15:46,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:46,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:46,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:46,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:46,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:46,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:46,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:46,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:47,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:47,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:47,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:47,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:47,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:47,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:47,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:47,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:47,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:47,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:47,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:48,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:48,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:48,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:49,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:49,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:49,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:49,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:49,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:49,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:49,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:49,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:49,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:50,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:50,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:50,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:50,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:50,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:50,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:50,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:50,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:50,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:50,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:51,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:51,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:51,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:51,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 04:15:51,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 48 [2020-10-29 04:15:51,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 04:15:51,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:51,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:15:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:15:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:15:51,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:51,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:51,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:51,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:51,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:51,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:51,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:15:51,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:51,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:51,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:15:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:51,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:51,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:51,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:51,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:51,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:51,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:51,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:51,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:52,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:52,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:52,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:52,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:52,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:52,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:52,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:52,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:52,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:52,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:52,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:52,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:53,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:53,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:53,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:53,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:53,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:53,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:53,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:53,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:54,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:54,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:54,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:54,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:54,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:54,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:54,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:55,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:55,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:55,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:55,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:55,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:55,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:55,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:55,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:55,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:56,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:56,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 04:15:56,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 46 [2020-10-29 04:15:56,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 04:15:56,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:56,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:15:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:15:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:15:56,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:15:56,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109458500] [2020-10-29 04:15:56,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:56,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:15:56,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689004293] [2020-10-29 04:15:56,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:15:56,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:56,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:15:56,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:15:56,981 INFO L87 Difference]: Start difference. First operand 1550 states and 1984 transitions. Second operand 7 states. [2020-10-29 04:15:58,748 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2020-10-29 04:15:58,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:58,921 INFO L93 Difference]: Finished difference Result 4269 states and 5542 transitions. [2020-10-29 04:15:58,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:15:58,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2020-10-29 04:15:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:58,936 INFO L225 Difference]: With dead ends: 4269 [2020-10-29 04:15:58,936 INFO L226 Difference]: Without dead ends: 2847 [2020-10-29 04:15:58,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:15:58,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2020-10-29 04:15:59,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2254. [2020-10-29 04:15:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2254 states. [2020-10-29 04:15:59,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 2878 transitions. [2020-10-29 04:15:59,052 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 2878 transitions. Word has length 58 [2020-10-29 04:15:59,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:59,052 INFO L481 AbstractCegarLoop]: Abstraction has 2254 states and 2878 transitions. [2020-10-29 04:15:59,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:15:59,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 2878 transitions. [2020-10-29 04:15:59,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 04:15:59,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:59,055 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:59,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:15:59,055 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:59,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:59,056 INFO L82 PathProgramCache]: Analyzing trace with hash -268829016, now seen corresponding path program 1 times [2020-10-29 04:15:59,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:59,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406407655] [2020-10-29 04:15:59,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:00,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:00,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:00,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:00,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:00,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:00,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:00,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:00,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:00,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:00,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:00,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:00,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:01,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:01,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:01,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:01,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:01,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:02,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:02,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:02,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:02,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:02,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:02,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:02,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:03,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:03,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:03,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:03,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:03,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:03,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:03,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:03,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:03,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:03,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:03,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:04,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 04:16:04,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 81 [2020-10-29 04:16:04,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 04:16:04,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:04,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:16:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:16:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:16:04,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:04,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:16:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:04,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:04,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:16:04,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:04,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:16:04,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:04,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:16:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:16:04,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:04,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:16:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:04,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:04,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:05,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:05,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:05,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:05,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:05,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:05,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:07,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:08,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:08,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:08,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:08,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:08,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:08,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:08,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:09,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:09,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 04:16:09,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 78 [2020-10-29 04:16:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 04:16:09,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:09,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:16:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:16:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:16:09,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 04:16:09,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406407655] [2020-10-29 04:16:09,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:16:09,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:16:09,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330654473] [2020-10-29 04:16:09,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:16:09,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:16:09,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:16:09,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:16:09,258 INFO L87 Difference]: Start difference. First operand 2254 states and 2878 transitions. Second operand 9 states. [2020-10-29 04:16:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:16:12,156 INFO L93 Difference]: Finished difference Result 5350 states and 6952 transitions. [2020-10-29 04:16:12,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 04:16:12,156 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-29 04:16:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:16:12,175 INFO L225 Difference]: With dead ends: 5350 [2020-10-29 04:16:12,175 INFO L226 Difference]: Without dead ends: 3954 [2020-10-29 04:16:12,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:16:12,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2020-10-29 04:16:12,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 2915. [2020-10-29 04:16:12,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2915 states. [2020-10-29 04:16:12,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 3709 transitions. [2020-10-29 04:16:12,336 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 3709 transitions. Word has length 59 [2020-10-29 04:16:12,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:16:12,336 INFO L481 AbstractCegarLoop]: Abstraction has 2915 states and 3709 transitions. [2020-10-29 04:16:12,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:16:12,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 3709 transitions. [2020-10-29 04:16:12,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 04:16:12,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:16:12,340 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:16:12,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:16:12,340 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:16:12,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:16:12,341 INFO L82 PathProgramCache]: Analyzing trace with hash 302944604, now seen corresponding path program 1 times [2020-10-29 04:16:12,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:16:12,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773527836] [2020-10-29 04:16:12,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:16:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:12,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:12,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:12,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:12,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:12,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 04:16:12,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:16:12,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-29 04:16:12,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:12,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:12,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:12,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 04:16:12,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:16:12,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:12,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:16:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:12,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:12,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:12,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:16:12,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:12,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:16:12,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:12,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:16:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:16:12,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:12,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:16:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:12,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:12,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:12,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 04:16:12,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:12,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 04:16:12,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:12,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:12,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:12,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:16:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:16:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 04:16:12,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773527836] [2020-10-29 04:16:12,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:16:12,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:16:12,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880562178] [2020-10-29 04:16:12,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:16:12,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:16:12,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:16:12,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:16:12,904 INFO L87 Difference]: Start difference. First operand 2915 states and 3709 transitions. Second operand 4 states. [2020-10-29 04:16:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:16:13,246 INFO L93 Difference]: Finished difference Result 3957 states and 4929 transitions. [2020-10-29 04:16:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:16:13,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-29 04:16:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:16:13,263 INFO L225 Difference]: With dead ends: 3957 [2020-10-29 04:16:13,263 INFO L226 Difference]: Without dead ends: 3871 [2020-10-29 04:16:13,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:16:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3871 states. [2020-10-29 04:16:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3871 to 3667. [2020-10-29 04:16:13,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3667 states. [2020-10-29 04:16:13,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 4519 transitions. [2020-10-29 04:16:13,426 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 4519 transitions. Word has length 63 [2020-10-29 04:16:13,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:16:13,427 INFO L481 AbstractCegarLoop]: Abstraction has 3667 states and 4519 transitions. [2020-10-29 04:16:13,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:16:13,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 4519 transitions. [2020-10-29 04:16:13,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 04:16:13,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:16:13,431 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:16:13,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:16:13,431 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:16:13,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:16:13,432 INFO L82 PathProgramCache]: Analyzing trace with hash -91422182, now seen corresponding path program 1 times [2020-10-29 04:16:13,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:16:13,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646242576] [2020-10-29 04:16:13,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:16:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:13,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:13,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:13,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:13,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:13,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 04:16:13,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:16:13,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-29 04:16:13,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:13,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:13,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:16:13,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:16:13,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:16:13,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:16:14,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:16:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:14,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:14,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:14,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:16:14,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:14,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:16:14,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:14,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:14,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:16:14,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:14,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:16:14,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:16:14,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:16:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:14,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:14,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:14,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:14,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:14,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 04:16:14,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:16:14,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-29 04:16:14,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:14,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:16:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:16:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 04:16:14,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 04:16:14,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646242576] [2020-10-29 04:16:14,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:16:14,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:16:14,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881280207] [2020-10-29 04:16:14,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:16:14,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:16:14,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:16:14,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:16:14,529 INFO L87 Difference]: Start difference. First operand 3667 states and 4519 transitions. Second operand 6 states. [2020-10-29 04:16:15,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:16:15,166 INFO L93 Difference]: Finished difference Result 3679 states and 4530 transitions. [2020-10-29 04:16:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:16:15,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-29 04:16:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:16:15,172 INFO L225 Difference]: With dead ends: 3679 [2020-10-29 04:16:15,173 INFO L226 Difference]: Without dead ends: 880 [2020-10-29 04:16:15,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:16:15,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-10-29 04:16:15,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2020-10-29 04:16:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-10-29 04:16:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1067 transitions. [2020-10-29 04:16:15,222 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1067 transitions. Word has length 63 [2020-10-29 04:16:15,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:16:15,223 INFO L481 AbstractCegarLoop]: Abstraction has 880 states and 1067 transitions. [2020-10-29 04:16:15,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:16:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1067 transitions. [2020-10-29 04:16:15,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 04:16:15,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:16:15,225 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:16:15,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:16:15,225 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:16:15,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:16:15,226 INFO L82 PathProgramCache]: Analyzing trace with hash -122024200, now seen corresponding path program 1 times [2020-10-29 04:16:15,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:16:15,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922655683] [2020-10-29 04:16:15,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:16:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:15,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:15,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:17,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:17,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 04:16:17,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:16:17,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1835 [2020-10-29 04:16:17,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:17,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:17,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:16:17,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:16:17,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 04:16:17,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:17,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:16:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:17,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:17,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:17,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:16:17,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:17,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:16:17,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:17,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:16:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:16:17,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:16:17,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:16:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:17,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:18,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:18,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 04:16:18,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:16:18,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1424 [2020-10-29 04:16:18,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:18,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:16:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:16:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 04:16:18,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:18,823 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 1 proven. 56 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 04:16:18,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922655683] [2020-10-29 04:16:18,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:16:18,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:16:18,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651420987] [2020-10-29 04:16:18,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:16:18,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:16:18,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:16:18,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:16:18,825 INFO L87 Difference]: Start difference. First operand 880 states and 1067 transitions. Second operand 9 states. [2020-10-29 04:16:19,322 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-29 04:16:19,762 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-29 04:16:20,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:16:20,540 INFO L93 Difference]: Finished difference Result 2521 states and 3116 transitions. [2020-10-29 04:16:20,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:16:20,541 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-29 04:16:20,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:16:20,548 INFO L225 Difference]: With dead ends: 2521 [2020-10-29 04:16:20,548 INFO L226 Difference]: Without dead ends: 1329 [2020-10-29 04:16:20,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:16:20,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2020-10-29 04:16:20,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1087. [2020-10-29 04:16:20,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2020-10-29 04:16:20,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1349 transitions. [2020-10-29 04:16:20,605 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1349 transitions. Word has length 82 [2020-10-29 04:16:20,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:16:20,606 INFO L481 AbstractCegarLoop]: Abstraction has 1087 states and 1349 transitions. [2020-10-29 04:16:20,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:16:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1349 transitions. [2020-10-29 04:16:20,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 04:16:20,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:16:20,609 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:16:20,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:16:20,609 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:16:20,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:16:20,609 INFO L82 PathProgramCache]: Analyzing trace with hash 2123555254, now seen corresponding path program 2 times [2020-10-29 04:16:20,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:16:20,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38111855] [2020-10-29 04:16:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:16:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:20,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:20,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:20,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 04:16:20,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:20,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 04:16:20,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:20,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:20,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:16:20,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 04:16:20,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 04:16:20,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:20,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:16:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:20,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:20,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:20,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:16:20,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:20,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:16:20,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:20,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:20,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:16:20,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:16:20,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:20,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:16:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:20,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:21,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:21,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 04:16:21,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:21,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 04:16:21,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:21,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:16:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 04:16:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 04:16:21,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 04:16:21,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38111855] [2020-10-29 04:16:21,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:16:21,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:16:21,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810273894] [2020-10-29 04:16:21,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:16:21,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:16:21,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:16:21,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:16:21,164 INFO L87 Difference]: Start difference. First operand 1087 states and 1349 transitions. Second operand 6 states. [2020-10-29 04:16:21,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:16:21,703 INFO L93 Difference]: Finished difference Result 2353 states and 2914 transitions. [2020-10-29 04:16:21,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:16:21,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-29 04:16:21,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:16:21,709 INFO L225 Difference]: With dead ends: 2353 [2020-10-29 04:16:21,710 INFO L226 Difference]: Without dead ends: 1376 [2020-10-29 04:16:21,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:16:21,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-10-29 04:16:21,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1022. [2020-10-29 04:16:21,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2020-10-29 04:16:21,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1258 transitions. [2020-10-29 04:16:21,775 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1258 transitions. Word has length 82 [2020-10-29 04:16:21,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:16:21,775 INFO L481 AbstractCegarLoop]: Abstraction has 1022 states and 1258 transitions. [2020-10-29 04:16:21,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:16:21,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1258 transitions. [2020-10-29 04:16:21,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 04:16:21,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:16:21,777 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:16:21,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 04:16:21,778 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:16:21,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:16:21,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1469812168, now seen corresponding path program 3 times [2020-10-29 04:16:21,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:16:21,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854227322] [2020-10-29 04:16:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:16:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 04:16:21,808 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 04:16:21,809 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 04:16:21,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 04:16:21,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:16:21 BoogieIcfgContainer [2020-10-29 04:16:21,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 04:16:21,842 INFO L168 Benchmark]: Toolchain (without parser) took 126416.44 ms. Allocated memory was 152.0 MB in the beginning and 974.1 MB in the end (delta: 822.1 MB). Free memory was 127.0 MB in the beginning and 469.4 MB in the end (delta: -342.4 MB). Peak memory consumption was 481.2 MB. Max. memory is 8.0 GB. [2020-10-29 04:16:21,843 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 152.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 04:16:21,843 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.53 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 115.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 04:16:21,844 INFO L168 Benchmark]: Boogie Preprocessor took 53.42 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 113.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 04:16:21,844 INFO L168 Benchmark]: RCFGBuilder took 818.99 ms. Allocated memory is still 152.0 MB. Free memory was 113.3 MB in the beginning and 123.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2020-10-29 04:16:21,845 INFO L168 Benchmark]: TraceAbstraction took 125134.05 ms. Allocated memory was 152.0 MB in the beginning and 974.1 MB in the end (delta: 822.1 MB). Free memory was 123.4 MB in the beginning and 469.4 MB in the end (delta: -346.0 MB). Peak memory consumption was 476.1 MB. Max. memory is 8.0 GB. [2020-10-29 04:16:21,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 152.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 394.53 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 115.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.42 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 113.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 818.99 ms. Allocated memory is still 152.0 MB. Free memory was 113.3 MB in the beginning and 123.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 125134.05 ms. Allocated memory was 152.0 MB in the beginning and 974.1 MB in the end (delta: 822.1 MB). Free memory was 123.4 MB in the beginning and 469.4 MB in the end (delta: -346.0 MB). Peak memory consumption was 476.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 108, overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L116] unsigned int a, b, r; [L118] b = __VERIFIER_nondet_uint() [L120] a = 234770789 [L122] CALL, EXPR mp_add(a, b) [L34] unsigned char a0, a1, a2, a3; [L35] unsigned char b0, b1, b2, b3; [L36] unsigned char r0, r1, r2, r3; [L37] unsigned short carry; [L38] unsigned short partial_sum; [L39] unsigned int r; [L40] unsigned char i; [L41] unsigned char na, nb; [L42] a0 = a [L43] a1 = a >> 8 [L44] a2 = a >> 16U [L45] a3 = a >> 24U [L46] b0 = b [L47] b1 = b >> 8U [L48] b2 = b >> 16U [L49] b3 = b >> 24U [L50] na = (unsigned char)4 [L51] COND FALSE !(a3 == (unsigned char)0) [L60] nb = (unsigned char)4 [L61] COND TRUE b3 == (unsigned char)0 [L62] nb = nb - 1 [L63] COND TRUE b2 == (unsigned char)0 [L64] nb = nb - 1 [L65] COND TRUE b1 == (unsigned char)0 [L66] nb = nb - 1 [L70] carry = (unsigned short)0 [L71] i = (unsigned char)0 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND TRUE i == (unsigned char)0 [L76] partial_sum = partial_sum + a0 [L77] COND FALSE !(i == (unsigned char)1) [L78] COND FALSE !(i == (unsigned char)2) [L79] COND FALSE !(i == (unsigned char)3) [L81] COND TRUE i < nb [L82] COND TRUE i == (unsigned char)0 [L82] partial_sum = partial_sum + b0 [L83] COND FALSE !(i == (unsigned char)1) [L84] COND FALSE !(i == (unsigned char)2) [L85] COND FALSE !(i == (unsigned char)3) [L87] COND TRUE partial_sum > ((unsigned char)255) [L88] partial_sum = partial_sum & ((unsigned char)255) [L89] carry = (unsigned short)1 [L91] COND TRUE i == (unsigned char)0 [L91] r0 = (unsigned char)partial_sum [L92] COND FALSE !(i == (unsigned char)1) [L93] COND FALSE !(i == (unsigned char)2) [L94] COND FALSE !(i == (unsigned char)3) [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND FALSE !(i == (unsigned char)0) [L77] COND TRUE i == (unsigned char)1 [L77] partial_sum = partial_sum + a1 [L78] COND FALSE !(i == (unsigned char)2) [L79] COND FALSE !(i == (unsigned char)3) [L81] COND FALSE !(i < nb) [L87] COND FALSE !(partial_sum > ((unsigned char)255)) [L91] COND FALSE !(i == (unsigned char)0) [L92] COND TRUE i == (unsigned char)1 [L92] r1 = (unsigned char)partial_sum [L93] COND FALSE !(i == (unsigned char)2) [L94] COND FALSE !(i == (unsigned char)3) [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND FALSE !(i == (unsigned char)0) [L77] COND FALSE !(i == (unsigned char)1) [L78] COND TRUE i == (unsigned char)2 [L78] partial_sum = partial_sum + a2 [L79] COND FALSE !(i == (unsigned char)3) [L81] COND FALSE !(i < nb) [L87] COND FALSE !(partial_sum > ((unsigned char)255)) [L91] COND FALSE !(i == (unsigned char)0) [L92] COND FALSE !(i == (unsigned char)1) [L93] COND TRUE i == (unsigned char)2 [L93] r2 = (unsigned char)partial_sum [L94] COND FALSE !(i == (unsigned char)3) [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND FALSE !(i == (unsigned char)0) [L77] COND FALSE !(i == (unsigned char)1) [L78] COND FALSE !(i == (unsigned char)2) [L79] COND TRUE i == (unsigned char)3 [L79] partial_sum = partial_sum + a3 [L81] COND FALSE !(i < nb) [L87] COND FALSE !(partial_sum > ((unsigned char)255)) [L91] COND FALSE !(i == (unsigned char)0) [L92] COND FALSE !(i == (unsigned char)1) [L93] COND FALSE !(i == (unsigned char)2) [L94] COND TRUE i == (unsigned char)3 [L94] r3 = (unsigned char)partial_sum [L96] i = i + (unsigned char)1 [L72] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) [L99] COND FALSE !(i < (unsigned char)4) [L108] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L110] return r; [L122] RET, EXPR mp_add(a, b) [L122] r = mp_add(a, b) [L124] CALL __VERIFIER_assert(r == a + b) [L16] COND TRUE !(cond) [L17] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "byte_add_1-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 125.0s, OverallIterations: 17, TraceHistogramMax: 4, AutomataDifference: 22.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1075 SDtfs, 4323 SDslu, 414 SDs, 0 SdLazy, 7787 SolverSat, 580 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3667occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 16 MinimizatonAttempts, 3106 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 101.2s InterpolantComputationTime, 902 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 804 ConstructedInterpolants, 0 QuantifiedInterpolants, 266724 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 269/446 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...