/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/array-crafted/mapavg4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:19:12,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:19:12,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:19:12,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:19:12,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:19:12,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:19:12,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:19:12,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:19:12,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:19:12,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:19:12,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:19:12,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:19:12,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:19:12,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:19:12,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:19:12,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:19:12,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:19:12,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:19:12,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:19:12,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:19:12,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:19:12,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:19:12,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:19:12,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:19:12,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:19:12,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:19:12,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:19:12,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:19:12,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:19:12,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:19:12,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:19:12,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:19:12,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:19:12,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:19:12,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:19:12,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:19:12,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:19:12,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:19:12,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:19:12,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:19:12,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:19:12,715 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 03:19:12,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:19:12,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:19:12,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:19:12,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:19:12,773 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:19:12,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:19:12,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:19:12,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:19:12,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:19:12,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:19:12,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:19:12,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:19:12,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:19:12,776 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:19:12,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:19:12,777 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:19:12,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:19:12,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:19:12,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:19:12,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:19:12,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:19:12,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:19:12,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:19:12,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:19:12,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:19:12,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:19:12,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:19:12,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:19:12,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:19:12,781 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:19:13,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:19:13,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:19:13,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:19:13,300 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:19:13,300 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:19:13,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg4.i [2020-10-29 03:19:13,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e493c8b2e/f4f8bb64952f4971a43567f070ed7fbd/FLAG805f9d4fd [2020-10-29 03:19:14,144 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:19:14,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapavg4.i [2020-10-29 03:19:14,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e493c8b2e/f4f8bb64952f4971a43567f070ed7fbd/FLAG805f9d4fd [2020-10-29 03:19:14,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e493c8b2e/f4f8bb64952f4971a43567f070ed7fbd [2020-10-29 03:19:14,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:19:14,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:19:14,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:19:14,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:19:14,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:19:14,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:19:14" (1/1) ... [2020-10-29 03:19:14,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d962d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:14, skipping insertion in model container [2020-10-29 03:19:14,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:19:14" (1/1) ... [2020-10-29 03:19:14,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:19:14,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:19:14,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:19:14,698 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:19:14,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:19:14,741 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:19:14,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:14 WrapperNode [2020-10-29 03:19:14,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:19:14,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:19:14,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:19:14,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:19:14,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:14" (1/1) ... [2020-10-29 03:19:14,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:14" (1/1) ... [2020-10-29 03:19:14,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:14" (1/1) ... [2020-10-29 03:19:14,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:14" (1/1) ... [2020-10-29 03:19:14,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:14" (1/1) ... [2020-10-29 03:19:14,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:14" (1/1) ... [2020-10-29 03:19:14,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:14" (1/1) ... [2020-10-29 03:19:14,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:19:14,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:19:14,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:19:14,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:19:14,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:14" (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 03:19:14,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:19:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:19:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:19:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2020-10-29 03:19:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:19:14,874 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:19:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:19:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:19:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:19:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:19:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:19:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:19:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2020-10-29 03:19:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:19:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:19:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:19:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:19:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:19:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:19:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:19:15,257 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:19:15,257 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:19:15,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:19:15 BoogieIcfgContainer [2020-10-29 03:19:15,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:19:15,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:19:15,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:19:15,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:19:15,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:19:14" (1/3) ... [2020-10-29 03:19:15,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506c9ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:19:15, skipping insertion in model container [2020-10-29 03:19:15,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:14" (2/3) ... [2020-10-29 03:19:15,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506c9ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:19:15, skipping insertion in model container [2020-10-29 03:19:15,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:19:15" (3/3) ... [2020-10-29 03:19:15,270 INFO L111 eAbstractionObserver]: Analyzing ICFG mapavg4.i [2020-10-29 03:19:15,284 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:19:15,289 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:19:15,307 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:19:15,351 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:19:15,351 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:19:15,351 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:19:15,352 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:19:15,352 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:19:15,352 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:19:15,352 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:19:15,352 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:19:15,395 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-29 03:19:15,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:19:15,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:15,412 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:15,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:15,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:15,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1157692497, now seen corresponding path program 1 times [2020-10-29 03:19:15,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:15,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878839224] [2020-10-29 03:19:15,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:15,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:15,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:15,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:15,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:16,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:16,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:17,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:17,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:19:17,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:19:17,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1858 [2020-10-29 03:19:17,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:17,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:17,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:19:17,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:17,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:19:17,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:19:17,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:17,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:17,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:17,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:17,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:17,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:19:17,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:17,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:17,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:17,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:17,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:17,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:17,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:17,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:17,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:17,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:17,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:17,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 03:19:17,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:17,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:17,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:18,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 03:19:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:18,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:18,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:18,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:18,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:18,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:18,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 03:19:18,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:18,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:18,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:19:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:18,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:19:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:18,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:18,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:18,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:18,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:18,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 03:19:18,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:18,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:19:18,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 03:19:18,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878839224] [2020-10-29 03:19:18,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:19:18,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 03:19:18,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508334664] [2020-10-29 03:19:18,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:19:18,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:18,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:19:18,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:19:18,399 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 11 states. [2020-10-29 03:19:18,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:18,837 INFO L93 Difference]: Finished difference Result 87 states and 129 transitions. [2020-10-29 03:19:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:19:18,839 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 03:19:18,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:18,850 INFO L225 Difference]: With dead ends: 87 [2020-10-29 03:19:18,851 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:19:18,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:19:18,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:19:18,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2020-10-29 03:19:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:19:18,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2020-10-29 03:19:18,913 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 34 [2020-10-29 03:19:18,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:18,913 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-10-29 03:19:18,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:19:18,913 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2020-10-29 03:19:18,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:19:18,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:18,916 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:19:18,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:19:18,917 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:18,918 INFO L82 PathProgramCache]: Analyzing trace with hash -902142097, now seen corresponding path program 1 times [2020-10-29 03:19:18,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:18,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820253105] [2020-10-29 03:19:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:18,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:18,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:18,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:19,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:20,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:20,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:19:20,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:20,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1954 [2020-10-29 03:19:20,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:20,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:19:20,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:20,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:20,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:20,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:20,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:19:20,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:20,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:20,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:20,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:20,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:20,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:19:20,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 03:19:20,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:20,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:19:20,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:20,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 03:19:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:20,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:21,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:21,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 03:19:21,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:21,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:21,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:21,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:21,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:19:21,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:21,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:19:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:21,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:21,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:21,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 03:19:21,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:21,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:19:21,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 03:19:21,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820253105] [2020-10-29 03:19:21,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:21,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:19:21,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093265671] [2020-10-29 03:19:21,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:19:21,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:21,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:19:21,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:19:21,047 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 5 states. [2020-10-29 03:19:21,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:21,201 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2020-10-29 03:19:21,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:19:21,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-29 03:19:21,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:21,203 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:19:21,203 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 03:19:21,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:19:21,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 03:19:21,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-29 03:19:21,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 03:19:21,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-29 03:19:21,213 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 36 [2020-10-29 03:19:21,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:21,213 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-29 03:19:21,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:19:21,213 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-29 03:19:21,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:19:21,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:21,215 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:21,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:19:21,216 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:21,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:21,216 INFO L82 PathProgramCache]: Analyzing trace with hash 860862093, now seen corresponding path program 2 times [2020-10-29 03:19:21,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:21,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856036989] [2020-10-29 03:19:21,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:21,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:22,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:26,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:19:26,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:26,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 03:19:26,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:26,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:26,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 03:19:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:26,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:26,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:26,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:26,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:26,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:26,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 03:19:26,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:26,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:26,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:26,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:26,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:26,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:19:26,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:26,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 03:19:26,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:26,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:26,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:26,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 03:19:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:26,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:26,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:19:26,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:26,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 03:19:26,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:26,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:26,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:26,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:26,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:26,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:19:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:26,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:26,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:19:26,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:26,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 03:19:26,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:26,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 03:19:26,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856036989] [2020-10-29 03:19:26,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:26,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:19:26,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135868752] [2020-10-29 03:19:26,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:19:26,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:26,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:19:26,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:19:26,530 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-29 03:19:26,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:26,749 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-29 03:19:26,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:19:26,750 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-29 03:19:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:26,751 INFO L225 Difference]: With dead ends: 56 [2020-10-29 03:19:26,751 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 03:19:26,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:19:26,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 03:19:26,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-29 03:19:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:19:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-29 03:19:26,766 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-29 03:19:26,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:26,766 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-29 03:19:26,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:19:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-29 03:19:26,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:19:26,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:26,774 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:26,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:19:26,774 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:26,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:26,775 INFO L82 PathProgramCache]: Analyzing trace with hash -791718293, now seen corresponding path program 3 times [2020-10-29 03:19:26,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:26,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169003736] [2020-10-29 03:19:26,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:26,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:28,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:31,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:31,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:19:31,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:31,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 03:19:31,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:31,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:31,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:31,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:31,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:31,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:31,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:31,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:31,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:31,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:31,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:19:31,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:31,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:31,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:31,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:31,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:31,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:31,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:31,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:31,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:31,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:19:31,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:31,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 03:19:31,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:31,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:31,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:31,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:31,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:31,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:31,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:19:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:31,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:31,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:19:32,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:32,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 03:19:32,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:32,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:32,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:32,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:32,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:19:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:19:32,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:32,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 03:19:32,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:32,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:32,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-29 03:19:32,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169003736] [2020-10-29 03:19:32,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:32,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:19:32,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496003779] [2020-10-29 03:19:32,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:19:32,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:32,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:19:32,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:19:32,089 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-29 03:19:32,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:32,301 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-29 03:19:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:19:32,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-29 03:19:32,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:32,303 INFO L225 Difference]: With dead ends: 60 [2020-10-29 03:19:32,303 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 03:19:32,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:19:32,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 03:19:32,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-29 03:19:32,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 03:19:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-29 03:19:32,315 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-29 03:19:32,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:32,315 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-29 03:19:32,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:19:32,315 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-29 03:19:32,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:19:32,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:32,317 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:32,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:19:32,318 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:32,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:32,318 INFO L82 PathProgramCache]: Analyzing trace with hash 717772745, now seen corresponding path program 4 times [2020-10-29 03:19:32,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:32,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107563028] [2020-10-29 03:19:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:34,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:37,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:37,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:19:37,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:37,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:19:37,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:37,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 03:19:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:37,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:19:37,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:37,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:37,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:37,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:37,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:37,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:19:37,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:37,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:37,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:37,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:37,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:37,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:37,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:37,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:37,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:37,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:37,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:19:37,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:37,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 03:19:37,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:37,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:37,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:37,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:37,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:19:37,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 03:19:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:37,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:37,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:37,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:19:37,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:37,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 03:19:37,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:37,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:37,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:37,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:37,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:37,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:37,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:19:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:37,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:37,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:37,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:37,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:19:37,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:37,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 03:19:37,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:37,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:37,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:37,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:37,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 03:19:37,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107563028] [2020-10-29 03:19:37,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:37,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:19:37,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058878527] [2020-10-29 03:19:37,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:19:37,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:37,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:19:37,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:19:37,703 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-29 03:19:37,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:37,967 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-29 03:19:37,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:19:37,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-29 03:19:37,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:37,969 INFO L225 Difference]: With dead ends: 64 [2020-10-29 03:19:37,969 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 03:19:37,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:19:37,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 03:19:37,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-29 03:19:37,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 03:19:37,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-29 03:19:37,977 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-29 03:19:37,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:37,978 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-29 03:19:37,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:19:37,978 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-29 03:19:37,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:19:37,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:37,979 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:37,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:19:37,980 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:37,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:37,980 INFO L82 PathProgramCache]: Analyzing trace with hash 820714151, now seen corresponding path program 5 times [2020-10-29 03:19:37,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:37,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370046212] [2020-10-29 03:19:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:37,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:41,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:19:43,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:43,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:19:43,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 03:19:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:43,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:43,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:43,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:43,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:19:43,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:43,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:43,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:19:43,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:43,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 03:19:43,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:43,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:43,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:19:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:19:43,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:43,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 03:19:43,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:43,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:43,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:19:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:19:43,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:43,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 03:19:43,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:43,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:43,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:43,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 03:19:43,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370046212] [2020-10-29 03:19:43,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:43,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:19:43,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532304693] [2020-10-29 03:19:43,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:19:43,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:43,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:19:43,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:19:43,393 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-29 03:19:43,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:43,688 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-29 03:19:43,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:19:43,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-29 03:19:43,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:43,690 INFO L225 Difference]: With dead ends: 68 [2020-10-29 03:19:43,690 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 03:19:43,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:19:43,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 03:19:43,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-29 03:19:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:19:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-29 03:19:43,703 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-29 03:19:43,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:43,703 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-29 03:19:43,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:19:43,704 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-29 03:19:43,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:19:43,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:43,708 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:43,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:19:43,708 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:43,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:43,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1199570693, now seen corresponding path program 6 times [2020-10-29 03:19:43,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:43,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222641124] [2020-10-29 03:19:43,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:48,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:48,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:48,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 03:19:48,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:48,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:19:48,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:48,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 03:19:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:48,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:48,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:48,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:48,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:48,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:48,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:48,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:19:48,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:48,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:48,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:48,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:48,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:48,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:48,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:48,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:48,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:48,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:19:48,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 03:19:48,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:48,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 03:19:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:48,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:49,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:19:49,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:49,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 03:19:49,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:49,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:49,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:49,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:49,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:49,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:49,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:19:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:49,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:49,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:19:49,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:49,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 03:19:49,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:49,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:49,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:49,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:49,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-29 03:19:49,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222641124] [2020-10-29 03:19:49,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:49,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:19:49,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734328342] [2020-10-29 03:19:49,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:19:49,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:49,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:19:49,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:19:49,156 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-29 03:19:49,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:49,460 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-29 03:19:49,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:19:49,461 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-29 03:19:49,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:49,462 INFO L225 Difference]: With dead ends: 72 [2020-10-29 03:19:49,462 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 03:19:49,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:19:49,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 03:19:49,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-29 03:19:49,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 03:19:49,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-29 03:19:49,474 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-29 03:19:49,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:49,477 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-29 03:19:49,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:19:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-29 03:19:49,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:19:49,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:49,481 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:49,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:19:49,481 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:49,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:49,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1030186211, now seen corresponding path program 7 times [2020-10-29 03:19:49,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:49,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846080538] [2020-10-29 03:19:49,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:49,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:54,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:54,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:19:54,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:19:54,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:19:54,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:54,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:54,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:54,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:54,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:54,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:54,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:54,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:54,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:54,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:19:54,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:54,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:54,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:54,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:54,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:54,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:54,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:54,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:54,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:54,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:19:54,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:54,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 03:19:54,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:54,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:54,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:54,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:54,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:54,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:54,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:19:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:54,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:54,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:54,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:54,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:19:54,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:54,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 03:19:54,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:54,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:54,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:54,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:54,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:54,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:54,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:19:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:54,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:54,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:54,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:19:54,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:54,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 03:19:54,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:54,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:54,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:54,996 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 03:19:54,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846080538] [2020-10-29 03:19:54,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:54,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:19:54,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284662343] [2020-10-29 03:19:54,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:19:54,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:54,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:19:54,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:19:54,999 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-29 03:19:55,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:55,329 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-29 03:19:55,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:19:55,331 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-29 03:19:55,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:55,331 INFO L225 Difference]: With dead ends: 76 [2020-10-29 03:19:55,332 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 03:19:55,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:19:55,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 03:19:55,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-29 03:19:55,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:19:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-29 03:19:55,345 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-29 03:19:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:55,348 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-29 03:19:55,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:19:55,348 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-29 03:19:55,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 03:19:55,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:55,349 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:55,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:19:55,349 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:55,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:55,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1038504895, now seen corresponding path program 8 times [2020-10-29 03:19:55,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:55,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090000897] [2020-10-29 03:19:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:55,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:00,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 03:20:00,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:00,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:20:00,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:00,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:00,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:00,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:00,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:00,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:00,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:00,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:00,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:00,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:00,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:00,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:00,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:00,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:00,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:00,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:00,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:20:00,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 03:20:00,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:00,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:00,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:00,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:20:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:00,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:00,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:20:00,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:00,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 03:20:00,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:00,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:00,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:00,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:00,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:00,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:00,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:20:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:00,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:20:00,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:00,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 03:20:00,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:00,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:00,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:00,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:00,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:00,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 03:20:00,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090000897] [2020-10-29 03:20:00,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:00,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:20:00,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295049581] [2020-10-29 03:20:00,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:20:00,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:00,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:20:00,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:20:00,917 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 12 states. [2020-10-29 03:20:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:01,320 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-29 03:20:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:20:01,321 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-29 03:20:01,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:01,321 INFO L225 Difference]: With dead ends: 80 [2020-10-29 03:20:01,321 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:20:01,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:20:01,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:20:01,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-29 03:20:01,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:20:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-29 03:20:01,331 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 82 [2020-10-29 03:20:01,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:01,331 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-29 03:20:01,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:20:01,331 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-29 03:20:01,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 03:20:01,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:01,332 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:01,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:20:01,333 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:01,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:01,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1537684767, now seen corresponding path program 9 times [2020-10-29 03:20:01,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:01,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336553226] [2020-10-29 03:20:01,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:01,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:01,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:01,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:06,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 03:20:06,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:06,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:20:06,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:06,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:06,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:06,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:06,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:06,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:06,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:06,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:06,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:06,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:06,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:06,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:06,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:06,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:06,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:06,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:06,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:06,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:06,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:20:06,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 03:20:06,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:06,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:06,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:06,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:20:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:06,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:06,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:20:06,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:06,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 03:20:06,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:06,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:06,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:06,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:06,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:06,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:06,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:20:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:06,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:06,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:20:06,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:06,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 03:20:06,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:06,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:06,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:06,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:06,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:06,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 03:20:06,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336553226] [2020-10-29 03:20:06,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:06,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:20:06,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610870273] [2020-10-29 03:20:06,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:20:06,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:06,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:20:06,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:20:06,794 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-10-29 03:20:07,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:07,237 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-29 03:20:07,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:20:07,237 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-29 03:20:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:07,238 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:20:07,238 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:20:07,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:20:07,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:20:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-29 03:20:07,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:20:07,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-29 03:20:07,249 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 88 [2020-10-29 03:20:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:07,249 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-29 03:20:07,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:20:07,249 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-29 03:20:07,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 03:20:07,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:07,250 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:07,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:20:07,251 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:07,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:07,251 INFO L82 PathProgramCache]: Analyzing trace with hash -591896707, now seen corresponding path program 10 times [2020-10-29 03:20:07,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:07,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770750894] [2020-10-29 03:20:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:07,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:07,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:07,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:07,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:12,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 03:20:12,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:12,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:20:12,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:12,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 03:20:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:12,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:12,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:12,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:12,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:12,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:12,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:20:12,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:12,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:12,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:12,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:12,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:12,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:12,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:20:12,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:12,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 03:20:12,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:12,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:12,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:12,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:12,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:12,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:12,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 03:20:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:12,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:12,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:20:12,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:12,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 03:20:12,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:12,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:12,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:12,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:20:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:12,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:12,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:20:12,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:12,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 03:20:12,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:12,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:12,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 03:20:12,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770750894] [2020-10-29 03:20:12,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:12,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:20:12,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60558091] [2020-10-29 03:20:12,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:20:12,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:12,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:20:12,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:20:12,768 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 14 states. [2020-10-29 03:20:13,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:13,268 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-29 03:20:13,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:20:13,269 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-29 03:20:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:13,271 INFO L225 Difference]: With dead ends: 88 [2020-10-29 03:20:13,271 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:20:13,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:20:13,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:20:13,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-29 03:20:13,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:20:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-29 03:20:13,280 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 94 [2020-10-29 03:20:13,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:13,280 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-29 03:20:13,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:20:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-29 03:20:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 03:20:13,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:13,282 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:13,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:20:13,282 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:13,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1519225691, now seen corresponding path program 11 times [2020-10-29 03:20:13,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:13,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003232663] [2020-10-29 03:20:13,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:13,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:13,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:13,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:13,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:18,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 03:20:18,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:18,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:20:18,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:18,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 03:20:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:18,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:18,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:18,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:18,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:18,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:18,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:18,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:18,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:18,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:18,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:18,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:20:18,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:18,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 03:20:18,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:18,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:18,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:18,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:20:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:18,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:20:18,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:18,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 03:20:18,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:18,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:18,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:18,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:20:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:18,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:18,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:20:18,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 03:20:18,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:18,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:18,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 03:20:18,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003232663] [2020-10-29 03:20:18,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:18,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:20:18,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931157518] [2020-10-29 03:20:18,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:20:18,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:18,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:20:18,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:20:18,994 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 15 states. [2020-10-29 03:20:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:19,616 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-29 03:20:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:20:19,616 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 100 [2020-10-29 03:20:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:19,617 INFO L225 Difference]: With dead ends: 92 [2020-10-29 03:20:19,618 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 03:20:19,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:20:19,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 03:20:19,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-29 03:20:19,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 03:20:19,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-29 03:20:19,635 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 100 [2020-10-29 03:20:19,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:19,635 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-29 03:20:19,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:20:19,635 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-29 03:20:19,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 03:20:19,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:19,641 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:19,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:20:19,642 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:19,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:19,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1560340295, now seen corresponding path program 12 times [2020-10-29 03:20:19,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:19,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178486265] [2020-10-29 03:20:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:19,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:19,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:19,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:19,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:24,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:24,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 03:20:24,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:24,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:20:24,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:24,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:24,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:24,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:24,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:24,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:24,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:24,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:24,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:24,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:24,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:24,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:24,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:24,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:24,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:24,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:24,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:24,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:24,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:20:24,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:24,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-29 03:20:24,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:24,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:24,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:24,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:24,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:20:25,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:20:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:25,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:25,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:25,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:25,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:20:25,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:25,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-29 03:20:25,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:25,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:25,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:25,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:25,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:25,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:25,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:20:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:25,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:25,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:25,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:25,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:20:25,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:25,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 03:20:25,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:25,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:25,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:25,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:25,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:25,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 03:20:25,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178486265] [2020-10-29 03:20:25,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:25,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:20:25,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344584284] [2020-10-29 03:20:25,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:20:25,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:25,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:20:25,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:20:25,658 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 16 states. [2020-10-29 03:20:26,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:26,188 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-29 03:20:26,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:20:26,188 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 106 [2020-10-29 03:20:26,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:26,189 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:20:26,190 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:20:26,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:20:26,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:20:26,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-29 03:20:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:20:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-29 03:20:26,211 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 106 [2020-10-29 03:20:26,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:26,211 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-29 03:20:26,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:20:26,211 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-29 03:20:26,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:20:26,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:26,212 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:26,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:20:26,213 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:26,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:26,213 INFO L82 PathProgramCache]: Analyzing trace with hash 847079319, now seen corresponding path program 13 times [2020-10-29 03:20:26,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:26,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808153425] [2020-10-29 03:20:26,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:26,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:26,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:26,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:26,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:31,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 03:20:31,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:31,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:20:31,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:31,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:31,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 03:20:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:31,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:31,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:31,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:31,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:31,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:31,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:20:31,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:31,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:31,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:31,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:31,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:31,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:31,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:31,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:31,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:20:31,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:31,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-29 03:20:31,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:31,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:31,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:31,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:31,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:31,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:31,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:20:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:31,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:31,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:20:31,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:31,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 03:20:31,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:31,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:31,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:31,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:31,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:20:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:31,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:32,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:32,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:20:32,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-29 03:20:32,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:32,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:32,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-29 03:20:32,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808153425] [2020-10-29 03:20:32,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:32,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:20:32,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915707130] [2020-10-29 03:20:32,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:20:32,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:32,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:20:32,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:20:32,214 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 17 states. [2020-10-29 03:20:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:32,835 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-29 03:20:32,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:20:32,835 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2020-10-29 03:20:32,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:32,836 INFO L225 Difference]: With dead ends: 100 [2020-10-29 03:20:32,836 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 03:20:32,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:20:32,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 03:20:32,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-29 03:20:32,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:20:32,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-29 03:20:32,854 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 112 [2020-10-29 03:20:32,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:32,857 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-29 03:20:32,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:20:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-29 03:20:32,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 03:20:32,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:32,858 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:32,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:20:32,859 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:32,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:32,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1441736715, now seen corresponding path program 14 times [2020-10-29 03:20:32,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:32,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975229203] [2020-10-29 03:20:32,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:32,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:32,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:32,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:32,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:37,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:37,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 03:20:37,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:20:37,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:37,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 03:20:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:37,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:37,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:37,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:37,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:37,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:37,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:37,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:37,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:37,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:37,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:37,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:37,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:37,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:37,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:37,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:38,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:20:38,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:38,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 03:20:38,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:38,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:38,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:38,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:38,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:20:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:38,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:38,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:20:38,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:38,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 03:20:38,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:38,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:38,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:38,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:20:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:38,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:38,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:20:38,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:38,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 03:20:38,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:38,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:38,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 03:20:38,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975229203] [2020-10-29 03:20:38,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:38,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:20:38,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243831280] [2020-10-29 03:20:38,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:20:38,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:38,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:20:38,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:20:38,701 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 18 states. [2020-10-29 03:20:39,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:39,317 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-29 03:20:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:20:39,317 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 118 [2020-10-29 03:20:39,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:39,318 INFO L225 Difference]: With dead ends: 104 [2020-10-29 03:20:39,319 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:20:39,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:20:39,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:20:39,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-29 03:20:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:20:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-29 03:20:39,327 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 118 [2020-10-29 03:20:39,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:39,327 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-29 03:20:39,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:20:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-29 03:20:39,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 03:20:39,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:39,329 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:39,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:20:39,329 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:39,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:39,330 INFO L82 PathProgramCache]: Analyzing trace with hash -983971373, now seen corresponding path program 15 times [2020-10-29 03:20:39,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:39,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696527041] [2020-10-29 03:20:39,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:39,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:39,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:39,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:39,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:44,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:44,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 03:20:44,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:44,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:20:44,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:44,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:44,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:44,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:44,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:44,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:44,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:44,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:44,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:44,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:44,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:44,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:44,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:44,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:44,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:44,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:20:44,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:44,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 03:20:44,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:44,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:44,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:44,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:20:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:44,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:44,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:45,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:45,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:20:45,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:45,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-29 03:20:45,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:45,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:45,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:45,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:20:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:45,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:45,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:45,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:45,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:20:45,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:45,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-29 03:20:45,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:45,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:45,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:45,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:45,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:45,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-29 03:20:45,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696527041] [2020-10-29 03:20:45,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:45,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:20:45,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236263029] [2020-10-29 03:20:45,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:20:45,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:45,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:20:45,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:20:45,366 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 19 states. [2020-10-29 03:20:46,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:46,057 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-29 03:20:46,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:20:46,058 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 124 [2020-10-29 03:20:46,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:46,059 INFO L225 Difference]: With dead ends: 108 [2020-10-29 03:20:46,059 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 03:20:46,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:20:46,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 03:20:46,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-29 03:20:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 03:20:46,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-29 03:20:46,073 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 124 [2020-10-29 03:20:46,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:46,073 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-29 03:20:46,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:20:46,073 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-29 03:20:46,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 03:20:46,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:46,075 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:46,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:20:46,075 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:46,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:46,076 INFO L82 PathProgramCache]: Analyzing trace with hash -795828943, now seen corresponding path program 16 times [2020-10-29 03:20:46,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:46,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505241883] [2020-10-29 03:20:46,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:46,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:46,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:46,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:46,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:51,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 03:20:51,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:51,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:20:51,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:51,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:51,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:51,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:51,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:51,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:51,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:51,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:20:51,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:51,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 03:20:51,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:51,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:51,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:51,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:20:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:51,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:51,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:20:51,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:51,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 03:20:51,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:51,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:51,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:51,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:51,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:51,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:51,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:20:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:51,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:52,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:52,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:20:52,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:52,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 03:20:52,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:52,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:52,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:52,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:52,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:52,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-29 03:20:52,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505241883] [2020-10-29 03:20:52,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:52,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:20:52,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017346956] [2020-10-29 03:20:52,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:20:52,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:52,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:20:52,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:20:52,045 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 20 states. [2020-10-29 03:20:52,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:52,792 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-29 03:20:52,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:20:52,793 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 130 [2020-10-29 03:20:52,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:52,794 INFO L225 Difference]: With dead ends: 112 [2020-10-29 03:20:52,794 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:20:52,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:20:52,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:20:52,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-29 03:20:52,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 03:20:52,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-29 03:20:52,802 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 130 [2020-10-29 03:20:52,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:52,802 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-29 03:20:52,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:20:52,802 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-29 03:20:52,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 03:20:52,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:52,804 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:52,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:20:52,804 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:52,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:52,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1635405297, now seen corresponding path program 17 times [2020-10-29 03:20:52,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:52,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146934098] [2020-10-29 03:20:52,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:52,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:52,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:52,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:57,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:57,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 03:20:57,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:57,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:20:57,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:57,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:57,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:20:57,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 03:20:57,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:20:57,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:57,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:57,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:57,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:57,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:57,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:57,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:57,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:57,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:57,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:57,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:57,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:57,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:57,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:57,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:57,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:58,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:58,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:20:58,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:58,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-29 03:20:58,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:58,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:58,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:20:58,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:58,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:20:58,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:58,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:20:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:58,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:58,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:58,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:20:58,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:58,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 03:20:58,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:58,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:20:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:20:58,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:58,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 03:20:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:58,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:58,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:58,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:20:58,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:58,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-29 03:20:58,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:58,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:58,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:20:58,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:58,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:20:58,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-29 03:20:58,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146934098] [2020-10-29 03:20:58,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:58,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:20:58,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997937291] [2020-10-29 03:20:58,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:20:58,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:58,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:20:58,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:20:58,889 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 21 states. [2020-10-29 03:20:59,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:59,717 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-29 03:20:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:20:59,718 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 136 [2020-10-29 03:20:59,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:59,719 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:20:59,719 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 03:20:59,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:20:59,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 03:20:59,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-29 03:20:59,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:20:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-29 03:20:59,734 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 136 [2020-10-29 03:20:59,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:59,735 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-29 03:20:59,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:20:59,735 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-29 03:20:59,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 03:20:59,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:59,738 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:59,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:20:59,738 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:59,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:59,739 INFO L82 PathProgramCache]: Analyzing trace with hash -22976403, now seen corresponding path program 18 times [2020-10-29 03:20:59,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:59,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129466487] [2020-10-29 03:20:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:59,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:59,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:59,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:59,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:04,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:04,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 03:21:04,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:04,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 03:21:04,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:04,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:04,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:04,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:04,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:04,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:04,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:04,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:04,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:04,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:04,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:04,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:04,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:04,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:04,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:04,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:05,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:05,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:21:05,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:05,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-29 03:21:05,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:05,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:05,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:05,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:05,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:05,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:05,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:21:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:05,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:05,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:05,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:05,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:21:05,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:05,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-29 03:21:05,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:05,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:05,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:05,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:21:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:05,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:05,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:05,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:05,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:21:05,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:05,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-29 03:21:05,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:05,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:05,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:05,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:05,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:05,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-29 03:21:06,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129466487] [2020-10-29 03:21:06,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:06,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:21:06,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484693554] [2020-10-29 03:21:06,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:21:06,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:06,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:21:06,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:21:06,011 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 22 states. [2020-10-29 03:21:06,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:06,870 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-29 03:21:06,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:21:06,871 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 142 [2020-10-29 03:21:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:06,872 INFO L225 Difference]: With dead ends: 120 [2020-10-29 03:21:06,872 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:21:06,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:21:06,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:21:06,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-29 03:21:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:21:06,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-29 03:21:06,880 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 142 [2020-10-29 03:21:06,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:06,881 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-29 03:21:06,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:21:06,881 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-29 03:21:06,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 03:21:06,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:06,882 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:06,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:21:06,883 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:06,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:06,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1293672373, now seen corresponding path program 19 times [2020-10-29 03:21:06,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:06,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524923827] [2020-10-29 03:21:06,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:06,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:06,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:06,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:11,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:11,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 03:21:11,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:11,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:21:11,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:11,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:11,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:11,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-29 03:21:11,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:11,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:11,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:11,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:11,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:11,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:11,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:11,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:21:11,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:11,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:11,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:11,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:11,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:11,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:11,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:11,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:11,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:12,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:12,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:21:12,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:12,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-29 03:21:12,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:12,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:12,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:12,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:21:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:13,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:13,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:21:13,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:13,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-29 03:21:13,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:13,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:13,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:13,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:13,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:13,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:13,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 03:21:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:13,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:13,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:13,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:13,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:21:13,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:13,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-29 03:21:13,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:13,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:13,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-29 03:21:13,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524923827] [2020-10-29 03:21:13,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:13,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:21:13,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037464212] [2020-10-29 03:21:13,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:21:13,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:13,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:21:13,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:21:13,550 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 23 states. [2020-10-29 03:21:14,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:14,440 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-29 03:21:14,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:21:14,441 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 148 [2020-10-29 03:21:14,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:14,442 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:21:14,442 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:21:14,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:21:14,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:21:14,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-29 03:21:14,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:21:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-29 03:21:14,453 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 148 [2020-10-29 03:21:14,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:14,454 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-29 03:21:14,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:21:14,454 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-29 03:21:14,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 03:21:14,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:14,459 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:14,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:21:14,459 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:14,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:14,460 INFO L82 PathProgramCache]: Analyzing trace with hash -437896791, now seen corresponding path program 20 times [2020-10-29 03:21:14,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:14,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422126978] [2020-10-29 03:21:14,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:14,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:14,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:14,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:14,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:19,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:19,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 03:21:19,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:19,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:21:19,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:19,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:19,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:19,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:19,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:19,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:19,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:19,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:19,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:19,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:19,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:19,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:19,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:19,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:19,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:19,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:19,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:19,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:21:19,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:19,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-29 03:21:19,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:19,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:20,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:21:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:20,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:20,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:20,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:21:20,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:20,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-29 03:21:20,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:20,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:20,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:20,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:20,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:20,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:20,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:21:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:20,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:20,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:20,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:20,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:21:20,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:20,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-29 03:21:20,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:20,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:20,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:21,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-29 03:21:21,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422126978] [2020-10-29 03:21:21,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:21,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:21:21,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274217559] [2020-10-29 03:21:21,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:21:21,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:21,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:21:21,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:21:21,007 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 24 states. [2020-10-29 03:21:22,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:22,004 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-29 03:21:22,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:21:22,005 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 154 [2020-10-29 03:21:22,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:22,006 INFO L225 Difference]: With dead ends: 128 [2020-10-29 03:21:22,007 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 03:21:22,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:21:22,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 03:21:22,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-29 03:21:22,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 03:21:22,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-29 03:21:22,014 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 154 [2020-10-29 03:21:22,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:22,014 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-29 03:21:22,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:21:22,014 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-29 03:21:22,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 03:21:22,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:22,016 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:22,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:21:22,016 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:22,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:22,017 INFO L82 PathProgramCache]: Analyzing trace with hash 551031943, now seen corresponding path program 21 times [2020-10-29 03:21:22,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:22,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232174833] [2020-10-29 03:21:22,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:22,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:22,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:22,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:22,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:27,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:27,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 03:21:27,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 03:21:27,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:27,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 03:21:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:27,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:27,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:27,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:27,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:27,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:27,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:27,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:27,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:27,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:27,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:27,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:27,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:27,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:27,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:21:27,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:27,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-29 03:21:27,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:27,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:27,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:21:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:27,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:28,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:28,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:21:28,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:28,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-29 03:21:28,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:28,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:28,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:28,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:28,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:28,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:28,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 03:21:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:28,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:28,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:28,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:28,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:21:28,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:28,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-29 03:21:28,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:28,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:28,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-29 03:21:28,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232174833] [2020-10-29 03:21:28,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:28,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:21:28,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502348625] [2020-10-29 03:21:28,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:21:28,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:28,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:21:28,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:21:28,626 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 25 states. [2020-10-29 03:21:29,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:29,648 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-29 03:21:29,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:21:29,649 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 160 [2020-10-29 03:21:29,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:29,650 INFO L225 Difference]: With dead ends: 132 [2020-10-29 03:21:29,651 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 03:21:29,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:21:29,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 03:21:29,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-29 03:21:29,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:21:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-29 03:21:29,658 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 160 [2020-10-29 03:21:29,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:29,659 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-29 03:21:29,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:21:29,659 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-29 03:21:29,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 03:21:29,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:29,662 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:29,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:21:29,663 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:29,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:29,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1048440603, now seen corresponding path program 22 times [2020-10-29 03:21:29,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:29,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139527768] [2020-10-29 03:21:29,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:29,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:29,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:29,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:34,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:34,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 03:21:34,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:21:34,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:34,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:34,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:34,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:34,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:34,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:34,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:34,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:34,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:34,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:34,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:34,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:35,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:35,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:21:35,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:35,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-29 03:21:35,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:35,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:35,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:35,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:21:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:35,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:35,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:36,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:36,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:21:36,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:36,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-29 03:21:36,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:36,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:36,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:36,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:21:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:36,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:36,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:36,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:21:36,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:36,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-29 03:21:36,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:36,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:36,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:36,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:36,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:36,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:36,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-29 03:21:36,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139527768] [2020-10-29 03:21:36,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:36,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:21:36,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499446489] [2020-10-29 03:21:36,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:21:36,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:36,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:21:36,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:21:36,591 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 26 states. [2020-10-29 03:21:37,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:37,695 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-29 03:21:37,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:21:37,695 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 166 [2020-10-29 03:21:37,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:37,696 INFO L225 Difference]: With dead ends: 136 [2020-10-29 03:21:37,696 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:21:37,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:21:37,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:21:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-29 03:21:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:21:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-29 03:21:37,704 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 166 [2020-10-29 03:21:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:37,704 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-29 03:21:37,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:21:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-29 03:21:37,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 03:21:37,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:37,706 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:37,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:21:37,706 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:37,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:37,707 INFO L82 PathProgramCache]: Analyzing trace with hash -263942461, now seen corresponding path program 23 times [2020-10-29 03:21:37,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:37,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018328056] [2020-10-29 03:21:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:37,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:37,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:37,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:37,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:42,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:42,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 03:21:42,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:42,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:21:42,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:42,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:42,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:42,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:42,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:42,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:42,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:42,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:42,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:42,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:42,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:42,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:42,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:42,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:43,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:43,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:21:43,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-29 03:21:43,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:43,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:43,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:21:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:43,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:44,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:44,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:21:44,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:44,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-29 03:21:44,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:44,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:44,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:44,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:44,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:44,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:44,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 03:21:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:44,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:44,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:44,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:44,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:21:44,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:44,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-29 03:21:44,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:44,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:44,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:44,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:44,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:44,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-29 03:21:44,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018328056] [2020-10-29 03:21:44,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:44,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:21:44,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858104215] [2020-10-29 03:21:44,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:21:44,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:44,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:21:44,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:21:44,544 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 27 states. [2020-10-29 03:21:45,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:45,735 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-29 03:21:45,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:21:45,736 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 172 [2020-10-29 03:21:45,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:45,737 INFO L225 Difference]: With dead ends: 140 [2020-10-29 03:21:45,737 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 03:21:45,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:21:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 03:21:45,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-29 03:21:45,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:21:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-29 03:21:45,746 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 172 [2020-10-29 03:21:45,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:45,747 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-29 03:21:45,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:21:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-29 03:21:45,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 03:21:45,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:45,749 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:45,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:21:45,750 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:45,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:45,751 INFO L82 PathProgramCache]: Analyzing trace with hash 370667041, now seen corresponding path program 24 times [2020-10-29 03:21:45,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:45,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960793000] [2020-10-29 03:21:45,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:45,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:45,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:45,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:45,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:50,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:50,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 03:21:50,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:50,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:21:50,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:50,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:50,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:50,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 03:21:50,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:50,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:50,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:50,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:50,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:50,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:50,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:50,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:50,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:50,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:50,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:50,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:50,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:50,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:50,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:50,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:51,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:51,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:21:51,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:51,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-29 03:21:51,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:51,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:51,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:51,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:51,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:51,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:21:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:51,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:52,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:52,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:21:52,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:52,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-29 03:21:52,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:52,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:52,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:52,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:21:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:52,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:52,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:52,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:21:52,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:52,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-10-29 03:21:52,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:52,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:52,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:52,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:52,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:52,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-29 03:21:52,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960793000] [2020-10-29 03:21:52,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:52,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:21:52,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535652673] [2020-10-29 03:21:52,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:21:52,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:52,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:21:52,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:21:52,912 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 28 states. [2020-10-29 03:21:54,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:54,133 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-29 03:21:54,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:21:54,134 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 178 [2020-10-29 03:21:54,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:54,135 INFO L225 Difference]: With dead ends: 144 [2020-10-29 03:21:54,136 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 03:21:54,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:21:54,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 03:21:54,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-29 03:21:54,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:21:54,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-29 03:21:54,144 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 178 [2020-10-29 03:21:54,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:54,144 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-29 03:21:54,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:21:54,144 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-29 03:21:54,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 03:21:54,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:54,146 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:54,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:21:54,146 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:54,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:54,146 INFO L82 PathProgramCache]: Analyzing trace with hash -762540289, now seen corresponding path program 25 times [2020-10-29 03:21:54,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:54,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945936872] [2020-10-29 03:21:54,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:54,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:54,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:54,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:54,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:59,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:59,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-29 03:21:59,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:59,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:21:59,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:59,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:21:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 03:21:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:21:59,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:59,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:59,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:59,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:59,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:59,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:59,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:59,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:59,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:59,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:59,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:59,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:59,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:21:59,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:59,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-10-29 03:21:59,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:59,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:59,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:21:59,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:59,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:21:59,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:00,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:22:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:00,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:00,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:00,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:22:00,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:00,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-29 03:22:00,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:00,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:00,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:22:00,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:00,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:22:00,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:00,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 03:22:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:00,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:00,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:01,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:01,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:22:01,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:01,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-29 03:22:01,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:01,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:01,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:22:01,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:01,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:22:01,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-29 03:22:01,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945936872] [2020-10-29 03:22:01,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:01,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:22:01,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622008844] [2020-10-29 03:22:01,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:22:01,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:01,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:22:01,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:22:01,263 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 29 states. [2020-10-29 03:22:02,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:02,569 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-29 03:22:02,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:22:02,569 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 184 [2020-10-29 03:22:02,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:02,570 INFO L225 Difference]: With dead ends: 148 [2020-10-29 03:22:02,570 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:22:02,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:22:02,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:22:02,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-29 03:22:02,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:22:02,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-29 03:22:02,577 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 184 [2020-10-29 03:22:02,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:02,577 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-29 03:22:02,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:22:02,577 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-29 03:22:02,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 03:22:02,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:02,578 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:02,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:22:02,579 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:02,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:02,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1909117277, now seen corresponding path program 26 times [2020-10-29 03:22:02,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:02,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548321373] [2020-10-29 03:22:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:02,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:02,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:02,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:02,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:07,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:07,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 03:22:07,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:07,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 03:22:07,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:07,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:07,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:07,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:07,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:07,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-29 03:22:07,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:07,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:07,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:07,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:07,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:07,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:07,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:07,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:07,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:07,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:07,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:07,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:07,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:07,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:08,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:08,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:22:08,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:08,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-29 03:22:08,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:08,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:08,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:08,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:22:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:08,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:08,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:09,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:09,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:22:09,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:09,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-29 03:22:09,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:09,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:09,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:09,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:09,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:09,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:09,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 03:22:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:09,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:09,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:09,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:09,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:22:09,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:09,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-10-29 03:22:09,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:09,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:09,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:09,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:09,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:09,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:09,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-29 03:22:09,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548321373] [2020-10-29 03:22:09,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:09,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:22:09,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380527349] [2020-10-29 03:22:09,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:22:09,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:09,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:22:09,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:22:09,859 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 30 states. [2020-10-29 03:22:11,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:11,229 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-29 03:22:11,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:22:11,230 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 190 [2020-10-29 03:22:11,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:11,231 INFO L225 Difference]: With dead ends: 152 [2020-10-29 03:22:11,231 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:22:11,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:22:11,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:22:11,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-29 03:22:11,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:22:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-29 03:22:11,240 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 190 [2020-10-29 03:22:11,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:11,240 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-29 03:22:11,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:22:11,241 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-29 03:22:11,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 03:22:11,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:11,242 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:11,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:22:11,242 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:11,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:11,243 INFO L82 PathProgramCache]: Analyzing trace with hash -493677253, now seen corresponding path program 27 times [2020-10-29 03:22:11,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:11,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532234537] [2020-10-29 03:22:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:11,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:11,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:11,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:11,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:16,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:16,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 03:22:16,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:16,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:22:16,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:16,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:16,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:16,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:16,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:16,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:16,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:16,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:16,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:16,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:16,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:16,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:16,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:16,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:16,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:16,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:16,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:16,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:16,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:22:16,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:16,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-10-29 03:22:16,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:16,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:16,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:17,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:22:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:17,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:17,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:18,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:18,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:22:18,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:18,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-29 03:22:18,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:18,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:18,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:18,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:18,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:18,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:18,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 03:22:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:18,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:18,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:22:18,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:18,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-29 03:22:18,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:18,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:18,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-29 03:22:18,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532234537] [2020-10-29 03:22:18,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:18,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:22:18,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475919385] [2020-10-29 03:22:18,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:22:18,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:18,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:22:18,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:22:18,592 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 31 states. [2020-10-29 03:22:19,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:19,993 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-29 03:22:19,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:22:19,993 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 196 [2020-10-29 03:22:19,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:19,994 INFO L225 Difference]: With dead ends: 156 [2020-10-29 03:22:19,994 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:22:19,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:22:19,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:22:20,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-29 03:22:20,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:22:20,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-29 03:22:20,005 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 196 [2020-10-29 03:22:20,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:20,006 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-29 03:22:20,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:22:20,006 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-29 03:22:20,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 03:22:20,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:20,008 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:20,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:22:20,008 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:20,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:20,009 INFO L82 PathProgramCache]: Analyzing trace with hash 742242969, now seen corresponding path program 28 times [2020-10-29 03:22:20,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:20,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423953061] [2020-10-29 03:22:20,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:20,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:20,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:20,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:20,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:25,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:25,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 03:22:25,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:22:25,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:25,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:25,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:25,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:25,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:25,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:25,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:25,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:25,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:25,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:25,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:25,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:25,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:25,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:25,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:25,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:25,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:22:25,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:25,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-29 03:22:25,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:25,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:25,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:26,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 03:22:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:26,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:26,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:26,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:26,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:22:26,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-29 03:22:26,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:26,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:26,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 03:22:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:26,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:26,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:27,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:27,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:22:27,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:27,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-29 03:22:27,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:27,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:27,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:27,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:27,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:27,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:27,426 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-29 03:22:27,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423953061] [2020-10-29 03:22:27,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:27,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:22:27,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699691087] [2020-10-29 03:22:27,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:22:27,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:27,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:22:27,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:22:27,428 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 32 states. [2020-10-29 03:22:28,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:28,809 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-29 03:22:28,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:22:28,810 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 202 [2020-10-29 03:22:28,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:28,811 INFO L225 Difference]: With dead ends: 160 [2020-10-29 03:22:28,811 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:22:28,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 03:22:28,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:22:28,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-29 03:22:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:22:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-29 03:22:28,819 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 202 [2020-10-29 03:22:28,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:28,820 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-29 03:22:28,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:22:28,820 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-29 03:22:28,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 03:22:28,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:28,821 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:28,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:22:28,821 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:28,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:28,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1689985399, now seen corresponding path program 29 times [2020-10-29 03:22:28,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:28,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178826542] [2020-10-29 03:22:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:28,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:28,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:28,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:28,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:33,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:33,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 03:22:33,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:33,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-29 03:22:33,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:33,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 03:22:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:33,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:33,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:33,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:33,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:33,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:33,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:33,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:33,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:33,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:33,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:33,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:33,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:33,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:33,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:33,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:33,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:34,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:34,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:22:34,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:34,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 864 [2020-10-29 03:22:34,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:34,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:34,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:34,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:34,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:34,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:35,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 03:22:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:35,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:36,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:36,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:22:36,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:36,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-10-29 03:22:36,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:36,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:36,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:36,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:36,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:36,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:36,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 03:22:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:36,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:36,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:36,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:36,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:22:36,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:36,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 702 [2020-10-29 03:22:36,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:36,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:36,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-29 03:22:36,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178826542] [2020-10-29 03:22:36,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:36,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:22:36,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524843260] [2020-10-29 03:22:36,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:22:36,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:36,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:22:36,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:22:36,786 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 33 states. [2020-10-29 03:22:38,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:38,306 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-29 03:22:38,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:22:38,307 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 208 [2020-10-29 03:22:38,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:38,308 INFO L225 Difference]: With dead ends: 164 [2020-10-29 03:22:38,308 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 03:22:38,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 03:22:38,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 03:22:38,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-29 03:22:38,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 03:22:38,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-29 03:22:38,317 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 208 [2020-10-29 03:22:38,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:38,318 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-29 03:22:38,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:22:38,318 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-29 03:22:38,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 03:22:38,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:38,319 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:38,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:22:38,319 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:38,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:38,320 INFO L82 PathProgramCache]: Analyzing trace with hash 647211477, now seen corresponding path program 30 times [2020-10-29 03:22:38,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:38,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532889136] [2020-10-29 03:22:38,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:38,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:38,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:38,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:38,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:43,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:43,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-29 03:22:43,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:43,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:22:43,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:43,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:43,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:43,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:43,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:43,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:43,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:43,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:43,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:22:43,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:43,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:43,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:43,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:43,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:43,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:43,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:43,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:44,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:44,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:22:44,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:44,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-29 03:22:44,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:44,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:44,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:44,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 03:22:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:44,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:44,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:45,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:45,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:22:45,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:45,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-29 03:22:45,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:45,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:45,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:45,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:45,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-29 03:22:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:45,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:45,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:46,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:46,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:22:46,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:46,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-29 03:22:46,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:46,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:46,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:46,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-29 03:22:46,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532889136] [2020-10-29 03:22:46,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:46,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:22:46,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899611316] [2020-10-29 03:22:46,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:22:46,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:46,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:22:46,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:22:46,179 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 34 states. [2020-10-29 03:22:47,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:47,861 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-29 03:22:47,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:22:47,863 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 214 [2020-10-29 03:22:47,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:47,864 INFO L225 Difference]: With dead ends: 168 [2020-10-29 03:22:47,864 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:22:47,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 03:22:47,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:22:47,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-29 03:22:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:22:47,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-29 03:22:47,872 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 214 [2020-10-29 03:22:47,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:47,872 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-29 03:22:47,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:22:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-29 03:22:47,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 03:22:47,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:47,874 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:47,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:22:47,874 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:47,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:47,875 INFO L82 PathProgramCache]: Analyzing trace with hash -2031635533, now seen corresponding path program 31 times [2020-10-29 03:22:47,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:47,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129752482] [2020-10-29 03:22:47,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:47,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:47,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:47,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:52,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:52,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-29 03:22:52,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:52,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:22:52,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:52,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:52,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:22:52,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:52,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:22:52,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:52,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:52,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:52,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:52,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:52,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:52,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:52,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:52,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:52,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:52,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:52,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:53,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:53,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:22:53,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:53,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-10-29 03:22:53,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:53,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:22:53,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:53,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:22:53,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:54,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 03:22:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:54,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:54,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:55,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:55,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:22:55,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:55,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-10-29 03:22:55,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:55,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:55,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:22:55,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:55,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:22:55,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:55,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-29 03:22:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:55,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:55,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking...