/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/eca-rers2012/Problem03_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:53:09,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:53:09,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:53:09,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:53:09,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:53:09,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:53:09,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:53:09,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:53:09,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:53:09,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:53:09,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:53:09,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:53:09,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:53:09,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:53:09,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:53:09,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:53:09,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:53:09,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:53:09,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:53:09,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:53:09,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:53:09,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:53:09,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:53:09,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:53:09,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:53:09,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:53:09,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:53:09,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:53:09,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:53:09,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:53:09,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:53:09,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:53:09,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:53:09,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:53:09,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:53:09,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:53:09,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:53:09,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:53:09,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:53:09,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:53:09,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:53:09,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:53:09,774 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:53:09,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:53:09,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:53:09,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:53:09,779 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:53:09,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:53:09,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:53:09,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:53:09,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:53:09,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:53:09,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:53:09,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:53:09,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:53:09,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:53:09,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:53:09,782 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:53:09,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:53:09,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:53:09,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:53:09,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:53:09,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:53:09,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:53:09,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:53:09,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:53:09,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:53:09,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:53:09,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:53:09,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:53:09,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:53:09,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:53:10,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:53:10,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:53:10,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:53:10,219 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:53:10,219 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:53:10,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label15.c [2020-10-29 04:53:10,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc32f19d3/e350fb7aae5643bca72eb258efcb18bd/FLAGcfcfcbf67 [2020-10-29 04:53:11,068 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:53:11,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label15.c [2020-10-29 04:53:11,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc32f19d3/e350fb7aae5643bca72eb258efcb18bd/FLAGcfcfcbf67 [2020-10-29 04:53:11,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc32f19d3/e350fb7aae5643bca72eb258efcb18bd [2020-10-29 04:53:11,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:53:11,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:53:11,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:53:11,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:53:11,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:53:11,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:53:11" (1/1) ... [2020-10-29 04:53:11,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14315246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:11, skipping insertion in model container [2020-10-29 04:53:11,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:53:11" (1/1) ... [2020-10-29 04:53:11,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:53:11,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:53:12,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:53:12,150 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:53:12,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:53:12,452 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:53:12,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:12 WrapperNode [2020-10-29 04:53:12,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:53:12,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:53:12,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:53:12,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:53:12,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:12" (1/1) ... [2020-10-29 04:53:12,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:12" (1/1) ... [2020-10-29 04:53:12,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:12" (1/1) ... [2020-10-29 04:53:12,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:12" (1/1) ... [2020-10-29 04:53:12,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:12" (1/1) ... [2020-10-29 04:53:12,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:12" (1/1) ... [2020-10-29 04:53:12,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:12" (1/1) ... [2020-10-29 04:53:12,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:53:12,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:53:12,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:53:12,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:53:12,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:53:12,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:53:12,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:53:12,771 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:53:12,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:53:12,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:53:12,772 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:53:12,772 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:53:12,773 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:53:12,773 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:53:12,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:53:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:53:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:53:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:53:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:53:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:53:12,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:53:12,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:53:12,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:53:12,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:53:15,110 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:53:15,111 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:53:15,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:53:15 BoogieIcfgContainer [2020-10-29 04:53:15,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:53:15,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:53:15,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:53:15,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:53:15,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:53:11" (1/3) ... [2020-10-29 04:53:15,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fd6c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:53:15, skipping insertion in model container [2020-10-29 04:53:15,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:12" (2/3) ... [2020-10-29 04:53:15,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fd6c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:53:15, skipping insertion in model container [2020-10-29 04:53:15,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:53:15" (3/3) ... [2020-10-29 04:53:15,123 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label15.c [2020-10-29 04:53:15,135 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:53:15,141 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:53:15,155 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:53:15,186 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:53:15,186 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:53:15,186 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:53:15,186 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:53:15,187 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:53:15,187 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:53:15,187 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:53:15,187 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:53:15,212 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:53:15,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-29 04:53:15,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:15,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:15,233 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:15,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:15,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1945129884, now seen corresponding path program 1 times [2020-10-29 04:53:15,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:15,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110571458] [2020-10-29 04:53:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:20,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:20,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 04:53:20,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:53:20,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 04:53:20,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:20,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:53:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:53:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-29 04:53:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:53:21,354 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:21,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:21,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:21,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:21,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:21,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 04:53:21,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:21,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:21,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:53:21,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:53:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:53:21,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110571458] [2020-10-29 04:53:21,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:53:21,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:53:21,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495460273] [2020-10-29 04:53:21,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:53:21,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:21,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:53:21,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:53:21,553 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:53:21,859 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:53:25,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:25,488 INFO L93 Difference]: Finished difference Result 877 states and 1539 transitions. [2020-10-29 04:53:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:53:25,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 207 [2020-10-29 04:53:25,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:25,510 INFO L225 Difference]: With dead ends: 877 [2020-10-29 04:53:25,510 INFO L226 Difference]: Without dead ends: 484 [2020-10-29 04:53:25,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:53:25,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-10-29 04:53:25,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 466. [2020-10-29 04:53:25,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-29 04:53:25,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 751 transitions. [2020-10-29 04:53:25,644 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 751 transitions. Word has length 207 [2020-10-29 04:53:25,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:25,646 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 751 transitions. [2020-10-29 04:53:25,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:53:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 751 transitions. [2020-10-29 04:53:25,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 04:53:25,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:25,654 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:25,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:53:25,655 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:25,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:25,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1404249953, now seen corresponding path program 1 times [2020-10-29 04:53:25,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:25,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911586548] [2020-10-29 04:53:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:25,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:26,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:28,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:28,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:28,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-29 04:53:28,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:53:28,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2912 [2020-10-29 04:53:28,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:28,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 04:53:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-29 04:53:28,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:53:29,206 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:29,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:29,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:29,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:29,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:29,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:29,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:53:29,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:29,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:29,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:29,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 04:53:29,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:29,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:29,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:29,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:53:29,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:29,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:53:29,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:29,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:29,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:29,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:29,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 04:53:29,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:53:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:53:29,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911586548] [2020-10-29 04:53:29,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:29,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:53:29,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364180609] [2020-10-29 04:53:29,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:53:29,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:29,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:53:29,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:53:29,582 INFO L87 Difference]: Start difference. First operand 466 states and 751 transitions. Second operand 5 states. [2020-10-29 04:53:29,849 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:33,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:33,556 INFO L93 Difference]: Finished difference Result 1354 states and 2212 transitions. [2020-10-29 04:53:33,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:53:33,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-29 04:53:33,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:33,566 INFO L225 Difference]: With dead ends: 1354 [2020-10-29 04:53:33,567 INFO L226 Difference]: Without dead ends: 894 [2020-10-29 04:53:33,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:53:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-10-29 04:53:33,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 888. [2020-10-29 04:53:33,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-10-29 04:53:33,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1391 transitions. [2020-10-29 04:53:33,628 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1391 transitions. Word has length 217 [2020-10-29 04:53:33,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:33,628 INFO L481 AbstractCegarLoop]: Abstraction has 888 states and 1391 transitions. [2020-10-29 04:53:33,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:53:33,629 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1391 transitions. [2020-10-29 04:53:33,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-29 04:53:33,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:33,637 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:33,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:53:33,637 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:33,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:33,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1951688471, now seen corresponding path program 1 times [2020-10-29 04:53:33,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:33,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062541663] [2020-10-29 04:53:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:33,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:33,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:36,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:37,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:37,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-29 04:53:37,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:53:37,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3517 [2020-10-29 04:53:37,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:37,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:37,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 04:53:37,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 04:53:37,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:37,977 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:37,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:37,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:37,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:37,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:37,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:53:37,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:37,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:37,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:38,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:38,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:38,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:38,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:53:38,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:38,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 04:53:38,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:38,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:38,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 04:53:38,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:53:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:53:38,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062541663] [2020-10-29 04:53:38,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:38,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:53:38,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531466886] [2020-10-29 04:53:38,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:53:38,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:38,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:53:38,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:53:38,646 INFO L87 Difference]: Start difference. First operand 888 states and 1391 transitions. Second operand 5 states. [2020-10-29 04:53:39,210 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 04:53:42,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:42,211 INFO L93 Difference]: Finished difference Result 1947 states and 3107 transitions. [2020-10-29 04:53:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:53:42,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-29 04:53:42,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:42,225 INFO L225 Difference]: With dead ends: 1947 [2020-10-29 04:53:42,226 INFO L226 Difference]: Without dead ends: 956 [2020-10-29 04:53:42,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:53:42,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2020-10-29 04:53:42,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 952. [2020-10-29 04:53:42,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-10-29 04:53:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1462 transitions. [2020-10-29 04:53:42,307 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1462 transitions. Word has length 221 [2020-10-29 04:53:42,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:42,307 INFO L481 AbstractCegarLoop]: Abstraction has 952 states and 1462 transitions. [2020-10-29 04:53:42,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:53:42,308 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1462 transitions. [2020-10-29 04:53:42,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-29 04:53:42,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:42,314 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:42,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:53:42,314 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:42,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:42,315 INFO L82 PathProgramCache]: Analyzing trace with hash -755572307, now seen corresponding path program 1 times [2020-10-29 04:53:42,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:42,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553777900] [2020-10-29 04:53:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:42,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:42,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:43,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:45,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:45,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-29 04:53:45,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:53:45,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2657 [2020-10-29 04:53:45,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:45,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 04:53:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-29 04:53:45,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:45,354 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:45,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:45,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:45,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:45,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:45,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:45,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:53:45,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:45,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:45,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:45,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:45,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:45,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:45,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:45,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:45,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:45,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:53:45,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:45,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 04:53:45,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:45,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:53:45,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:53:45,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553777900] [2020-10-29 04:53:45,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:45,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:53:45,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339516504] [2020-10-29 04:53:45,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:53:45,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:45,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:53:45,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:53:45,616 INFO L87 Difference]: Start difference. First operand 952 states and 1462 transitions. Second operand 5 states. [2020-10-29 04:53:45,868 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:49,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:49,047 INFO L93 Difference]: Finished difference Result 2754 states and 4334 transitions. [2020-10-29 04:53:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:53:49,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-29 04:53:49,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:49,065 INFO L225 Difference]: With dead ends: 2754 [2020-10-29 04:53:49,065 INFO L226 Difference]: Without dead ends: 1808 [2020-10-29 04:53:49,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:53:49,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2020-10-29 04:53:49,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1802. [2020-10-29 04:53:49,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1802 states. [2020-10-29 04:53:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2665 transitions. [2020-10-29 04:53:49,145 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2665 transitions. Word has length 223 [2020-10-29 04:53:49,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:49,146 INFO L481 AbstractCegarLoop]: Abstraction has 1802 states and 2665 transitions. [2020-10-29 04:53:49,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:53:49,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2665 transitions. [2020-10-29 04:53:49,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-29 04:53:49,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:49,155 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:49,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:53:49,156 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:49,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:49,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1338968844, now seen corresponding path program 1 times [2020-10-29 04:53:49,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:49,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585692900] [2020-10-29 04:53:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:49,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:49,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:51,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:51,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 04:53:51,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:53:51,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1955 [2020-10-29 04:53:51,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:51,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:53:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:53:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-29 04:53:51,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:51,538 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:51,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:51,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:51,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:51,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:51,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:51,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 04:53:51,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:51,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:53:51,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:51,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:51,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:51,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:51,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:53:51,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:51,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 04:53:51,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:51,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:53:51,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:53:51,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585692900] [2020-10-29 04:53:51,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:51,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:53:51,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538599363] [2020-10-29 04:53:51,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:53:51,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:51,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:53:51,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:53:51,915 INFO L87 Difference]: Start difference. First operand 1802 states and 2665 transitions. Second operand 6 states. [2020-10-29 04:53:52,185 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:55,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:55,541 INFO L93 Difference]: Finished difference Result 5376 states and 8391 transitions. [2020-10-29 04:53:55,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:53:55,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 239 [2020-10-29 04:53:55,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:55,568 INFO L225 Difference]: With dead ends: 5376 [2020-10-29 04:53:55,569 INFO L226 Difference]: Without dead ends: 3580 [2020-10-29 04:53:55,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:53:55,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3580 states. [2020-10-29 04:53:55,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3580 to 3543. [2020-10-29 04:53:55,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3543 states. [2020-10-29 04:53:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 5175 transitions. [2020-10-29 04:53:55,734 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 5175 transitions. Word has length 239 [2020-10-29 04:53:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:55,736 INFO L481 AbstractCegarLoop]: Abstraction has 3543 states and 5175 transitions. [2020-10-29 04:53:55,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:53:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 5175 transitions. [2020-10-29 04:53:55,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-29 04:53:55,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:55,751 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:55,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:53:55,752 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:55,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:55,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1864609133, now seen corresponding path program 1 times [2020-10-29 04:53:55,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:55,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770995367] [2020-10-29 04:53:55,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:55,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:56,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:59,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:00,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:00,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-29 04:54:00,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:54:00,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-29 04:54:00,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:00,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:00,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:54:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:54:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-29 04:54:00,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:01,206 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:01,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:01,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:01,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:01,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:01,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:01,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:54:01,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:01,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:01,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:01,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:01,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:01,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:01,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:54:01,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:01,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:54:01,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:01,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:54:01,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:01,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:54:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:01,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:01,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:01,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 04:54:01,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:01,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 04:54:01,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:01,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:01,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:01,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:01,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 04:54:01,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:54:01,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770995367] [2020-10-29 04:54:01,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:01,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:54:01,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990502159] [2020-10-29 04:54:01,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:54:01,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:01,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:54:01,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:54:01,649 INFO L87 Difference]: Start difference. First operand 3543 states and 5175 transitions. Second operand 6 states. [2020-10-29 04:54:02,149 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:05,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:05,922 INFO L93 Difference]: Finished difference Result 10222 states and 16255 transitions. [2020-10-29 04:54:05,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:54:05,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 247 [2020-10-29 04:54:05,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:05,978 INFO L225 Difference]: With dead ends: 10222 [2020-10-29 04:54:05,979 INFO L226 Difference]: Without dead ends: 6685 [2020-10-29 04:54:05,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:54:06,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6685 states. [2020-10-29 04:54:06,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6685 to 6571. [2020-10-29 04:54:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6571 states. [2020-10-29 04:54:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 9247 transitions. [2020-10-29 04:54:06,289 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 9247 transitions. Word has length 247 [2020-10-29 04:54:06,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:06,290 INFO L481 AbstractCegarLoop]: Abstraction has 6571 states and 9247 transitions. [2020-10-29 04:54:06,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:54:06,290 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 9247 transitions. [2020-10-29 04:54:06,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-29 04:54:06,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:06,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:06,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:54:06,315 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:06,316 INFO L82 PathProgramCache]: Analyzing trace with hash 2001237081, now seen corresponding path program 1 times [2020-10-29 04:54:06,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:06,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420056697] [2020-10-29 04:54:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:06,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:06,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:09,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:10,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:10,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-29 04:54:10,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:10,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4081 [2020-10-29 04:54:10,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:10,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:54:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:54:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 04:54:10,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:10,803 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:10,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:10,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:10,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:10,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:10,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:10,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:54:10,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:10,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:10,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:10,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:10,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:54:10,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:10,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:10,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:10,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:10,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:54:10,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:10,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 04:54:10,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:10,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 04:54:10,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:10,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:54:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:11,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:11,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:11,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:54:11,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:11,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 04:54:11,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:11,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:11,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:54:11,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:11,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:54:11,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:54:11,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420056697] [2020-10-29 04:54:11,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:11,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:54:11,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781930268] [2020-10-29 04:54:11,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:54:11,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:11,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:54:11,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:54:11,347 INFO L87 Difference]: Start difference. First operand 6571 states and 9247 transitions. Second operand 9 states. [2020-10-29 04:54:11,631 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:54:12,002 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:13,592 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:54:19,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:19,055 INFO L93 Difference]: Finished difference Result 25775 states and 39160 transitions. [2020-10-29 04:54:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:54:19,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 253 [2020-10-29 04:54:19,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:19,176 INFO L225 Difference]: With dead ends: 25775 [2020-10-29 04:54:19,176 INFO L226 Difference]: Without dead ends: 19418 [2020-10-29 04:54:19,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:54:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19418 states. [2020-10-29 04:54:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19418 to 19205. [2020-10-29 04:54:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19205 states. [2020-10-29 04:54:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19205 states to 19205 states and 27387 transitions. [2020-10-29 04:54:19,996 INFO L78 Accepts]: Start accepts. Automaton has 19205 states and 27387 transitions. Word has length 253 [2020-10-29 04:54:19,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:19,997 INFO L481 AbstractCegarLoop]: Abstraction has 19205 states and 27387 transitions. [2020-10-29 04:54:19,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:54:19,998 INFO L276 IsEmpty]: Start isEmpty. Operand 19205 states and 27387 transitions. [2020-10-29 04:54:20,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-29 04:54:20,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:20,071 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:20,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:54:20,071 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:20,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:20,072 INFO L82 PathProgramCache]: Analyzing trace with hash -969831047, now seen corresponding path program 1 times [2020-10-29 04:54:20,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:20,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944621139] [2020-10-29 04:54:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:20,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:20,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:22,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:22,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:22,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-29 04:54:22,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:22,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2738 [2020-10-29 04:54:22,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:22,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:54:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:54:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-29 04:54:22,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:23,322 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:23,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:23,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:23,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:23,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:23,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:23,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 04:54:23,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:23,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:54:23,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:23,612 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:54:23,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:23,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:23,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:23,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:54:23,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:23,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 04:54:23,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:23,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:23,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:23,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:23,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:54:23,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:23,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 04:54:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:23,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:23,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:23,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:54:23,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:23,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 04:54:23,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:23,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:54:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:54:23,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 43 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:54:24,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944621139] [2020-10-29 04:54:24,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:24,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:54:24,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203171979] [2020-10-29 04:54:24,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:54:24,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:24,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:54:24,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:54:24,158 INFO L87 Difference]: Start difference. First operand 19205 states and 27387 transitions. Second operand 9 states. [2020-10-29 04:54:24,460 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:54:24,979 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 04:54:26,942 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-29 04:54:32,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:32,209 INFO L93 Difference]: Finished difference Result 57682 states and 84038 transitions. [2020-10-29 04:54:32,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:54:32,210 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 253 [2020-10-29 04:54:32,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:32,392 INFO L225 Difference]: With dead ends: 57682 [2020-10-29 04:54:32,392 INFO L226 Difference]: Without dead ends: 36693 [2020-10-29 04:54:32,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:54:32,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36693 states. [2020-10-29 04:54:33,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36693 to 36660. [2020-10-29 04:54:33,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36660 states. [2020-10-29 04:54:33,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36660 states to 36660 states and 51305 transitions. [2020-10-29 04:54:33,693 INFO L78 Accepts]: Start accepts. Automaton has 36660 states and 51305 transitions. Word has length 253 [2020-10-29 04:54:33,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:33,694 INFO L481 AbstractCegarLoop]: Abstraction has 36660 states and 51305 transitions. [2020-10-29 04:54:33,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:54:33,694 INFO L276 IsEmpty]: Start isEmpty. Operand 36660 states and 51305 transitions. [2020-10-29 04:54:33,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-29 04:54:33,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:33,808 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:33,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:54:33,809 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:33,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:33,810 INFO L82 PathProgramCache]: Analyzing trace with hash -2050081579, now seen corresponding path program 1 times [2020-10-29 04:54:33,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:33,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364444622] [2020-10-29 04:54:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:33,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:34,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:36,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:36,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-29 04:54:36,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:54:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2547 [2020-10-29 04:54:36,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:36,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:54:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:54:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-29 04:54:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:36,809 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:36,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:36,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:36,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:36,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:36,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:36,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:54:36,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:36,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:54:36,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:36,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:36,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:37,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:37,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 04:54:37,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:37,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 04:54:37,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:37,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 04:54:37,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:54:37,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364444622] [2020-10-29 04:54:37,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:37,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:54:37,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778152115] [2020-10-29 04:54:37,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:54:37,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:37,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:54:37,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:54:37,231 INFO L87 Difference]: Start difference. First operand 36660 states and 51305 transitions. Second operand 6 states. [2020-10-29 04:54:37,521 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:40,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:40,789 INFO L93 Difference]: Finished difference Result 86925 states and 123053 transitions. [2020-10-29 04:54:40,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:54:40,789 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 274 [2020-10-29 04:54:40,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:41,004 INFO L225 Difference]: With dead ends: 86925 [2020-10-29 04:54:41,004 INFO L226 Difference]: Without dead ends: 50479 [2020-10-29 04:54:41,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:54:41,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50479 states. [2020-10-29 04:54:42,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50479 to 50469. [2020-10-29 04:54:42,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50469 states. [2020-10-29 04:54:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50469 states to 50469 states and 66765 transitions. [2020-10-29 04:54:43,147 INFO L78 Accepts]: Start accepts. Automaton has 50469 states and 66765 transitions. Word has length 274 [2020-10-29 04:54:43,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:43,151 INFO L481 AbstractCegarLoop]: Abstraction has 50469 states and 66765 transitions. [2020-10-29 04:54:43,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:54:43,152 INFO L276 IsEmpty]: Start isEmpty. Operand 50469 states and 66765 transitions. [2020-10-29 04:54:43,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-29 04:54:43,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:43,283 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:43,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:54:43,284 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:43,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:43,284 INFO L82 PathProgramCache]: Analyzing trace with hash -2111969345, now seen corresponding path program 1 times [2020-10-29 04:54:43,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:43,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985232980] [2020-10-29 04:54:43,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:43,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:43,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:45,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:48,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:48,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-29 04:54:48,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:54:48,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 04:54:48,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:48,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:54:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:54:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:54:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:48,686 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:48,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:48,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:48,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:48,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:48,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:48,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:54:48,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:48,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:54:48,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:48,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:48,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:48,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:48,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:48,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:54:48,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:54:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 04:54:48,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:48,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 04:54:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:48,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:54:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:48,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:49,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:49,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:54:49,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:49,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 04:54:49,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:49,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:54:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:49,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 04:54:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:49,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:49,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:49,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:54:49,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:49,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 04:54:49,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:49,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 04:54:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 89 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-29 04:54:49,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985232980] [2020-10-29 04:54:49,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:49,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:54:49,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711786344] [2020-10-29 04:54:49,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:54:49,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:49,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:54:49,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:54:49,291 INFO L87 Difference]: Start difference. First operand 50469 states and 66765 transitions. Second operand 7 states. [2020-10-29 04:54:49,544 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:51,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:51,916 INFO L93 Difference]: Finished difference Result 96599 states and 128301 transitions. [2020-10-29 04:54:51,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:54:51,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-29 04:54:51,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:52,101 INFO L225 Difference]: With dead ends: 96599 [2020-10-29 04:54:52,102 INFO L226 Difference]: Without dead ends: 46344 [2020-10-29 04:54:52,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:54:52,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46344 states. [2020-10-29 04:54:53,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46344 to 46338. [2020-10-29 04:54:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46338 states. [2020-10-29 04:54:53,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46338 states to 46338 states and 60092 transitions. [2020-10-29 04:54:53,885 INFO L78 Accepts]: Start accepts. Automaton has 46338 states and 60092 transitions. Word has length 290 [2020-10-29 04:54:53,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:53,885 INFO L481 AbstractCegarLoop]: Abstraction has 46338 states and 60092 transitions. [2020-10-29 04:54:53,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:54:53,886 INFO L276 IsEmpty]: Start isEmpty. Operand 46338 states and 60092 transitions. [2020-10-29 04:54:53,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-29 04:54:53,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:53,932 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:53,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:54:53,932 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:53,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:53,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1639511940, now seen corresponding path program 1 times [2020-10-29 04:54:53,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:53,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120715225] [2020-10-29 04:54:53,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:54,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:54,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:55,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:56,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:56,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 04:54:56,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:56,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2744 [2020-10-29 04:54:56,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:56,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:56,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:54:56,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 04:54:56,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 04:54:56,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:57,081 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:57,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:57,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:57,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:57,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:57,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:54:57,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:57,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:57,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:57,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:57,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:57,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 04:54:57,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:57,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 04:54:57,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:57,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 04:54:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:57,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 04:54:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:57,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:57,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:57,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:57,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 04:54:57,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:54:57,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 04:54:57,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:57,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:57,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:57,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:57,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 04:54:57,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:57,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:54:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:57,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:57,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 04:54:57,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:57,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 04:54:57,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:57,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 04:54:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 138 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 04:54:57,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120715225] [2020-10-29 04:54:57,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:57,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:54:57,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462212130] [2020-10-29 04:54:57,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:54:57,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:57,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:54:57,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:54:57,736 INFO L87 Difference]: Start difference. First operand 46338 states and 60092 transitions. Second operand 8 states. [2020-10-29 04:54:58,004 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:54:58,511 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:59,618 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:02,871 INFO L93 Difference]: Finished difference Result 91232 states and 118770 transitions. [2020-10-29 04:55:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:55:02,871 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 301 [2020-10-29 04:55:02,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:03,203 INFO L225 Difference]: With dead ends: 91232 [2020-10-29 04:55:03,210 INFO L226 Difference]: Without dead ends: 45111 [2020-10-29 04:55:03,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:55:03,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45111 states. [2020-10-29 04:55:04,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45111 to 43371. [2020-10-29 04:55:04,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43371 states. [2020-10-29 04:55:04,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43371 states to 43371 states and 52806 transitions. [2020-10-29 04:55:04,414 INFO L78 Accepts]: Start accepts. Automaton has 43371 states and 52806 transitions. Word has length 301 [2020-10-29 04:55:04,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:04,415 INFO L481 AbstractCegarLoop]: Abstraction has 43371 states and 52806 transitions. [2020-10-29 04:55:04,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:55:04,415 INFO L276 IsEmpty]: Start isEmpty. Operand 43371 states and 52806 transitions. [2020-10-29 04:55:04,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-29 04:55:04,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:04,440 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:04,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:55:04,440 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:04,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:04,441 INFO L82 PathProgramCache]: Analyzing trace with hash -879633102, now seen corresponding path program 1 times [2020-10-29 04:55:04,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:04,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183998057] [2020-10-29 04:55:04,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:05,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:05,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-29 04:55:05,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:05,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-10-29 04:55:05,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:05,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 04:55:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 04:55:05,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:05,675 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:05,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:05,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:05,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:05,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:05,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:55:05,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:05,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:05,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:05,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:05,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:05,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:05,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:05,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:05,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:05,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 04:55:05,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:05,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 04:55:05,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:05,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 04:55:05,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:05,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 04:55:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:05,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:06,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:06,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 04:55:06,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:06,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-29 04:55:06,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:06,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 04:55:06,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:55:06,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183998057] [2020-10-29 04:55:06,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:06,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:55:06,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679543555] [2020-10-29 04:55:06,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:55:06,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:06,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:55:06,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:55:06,317 INFO L87 Difference]: Start difference. First operand 43371 states and 52806 transitions. Second operand 7 states. [2020-10-29 04:55:06,721 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:55:07,295 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:11,708 INFO L93 Difference]: Finished difference Result 93258 states and 119289 transitions. [2020-10-29 04:55:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:55:11,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-29 04:55:11,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:11,904 INFO L225 Difference]: With dead ends: 93258 [2020-10-29 04:55:11,904 INFO L226 Difference]: Without dead ends: 50104 [2020-10-29 04:55:11,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:55:12,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50104 states. [2020-10-29 04:55:13,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50104 to 46009. [2020-10-29 04:55:13,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46009 states. [2020-10-29 04:55:13,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46009 states to 46009 states and 55600 transitions. [2020-10-29 04:55:13,663 INFO L78 Accepts]: Start accepts. Automaton has 46009 states and 55600 transitions. Word has length 309 [2020-10-29 04:55:13,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:13,664 INFO L481 AbstractCegarLoop]: Abstraction has 46009 states and 55600 transitions. [2020-10-29 04:55:13,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:55:13,664 INFO L276 IsEmpty]: Start isEmpty. Operand 46009 states and 55600 transitions. [2020-10-29 04:55:13,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-29 04:55:13,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:13,689 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:13,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:55:13,690 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:13,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:13,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1090518048, now seen corresponding path program 1 times [2020-10-29 04:55:13,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:13,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454671897] [2020-10-29 04:55:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:13,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:15,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:16,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:18,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:18,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-29 04:55:18,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:55:18,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4663 [2020-10-29 04:55:18,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:18,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:18,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:55:18,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:18,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 04:55:18,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:18,721 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:18,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:18,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:18,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:18,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:18,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:18,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:55:18,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:18,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:18,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:18,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:18,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:18,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:18,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:55:18,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:18,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 04:55:18,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:18,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:55:18,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:19,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:55:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:19,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:19,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:19,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:55:19,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:19,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:55:19,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:19,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:19,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:19,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:19,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 04:55:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:19,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:55:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:19,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:19,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:19,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 04:55:19,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:19,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 04:55:19,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:19,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 04:55:19,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 109 proven. 40 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 04:55:19,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454671897] [2020-10-29 04:55:19,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:19,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:55:19,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922119810] [2020-10-29 04:55:19,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:55:19,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:19,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:55:19,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:55:19,357 INFO L87 Difference]: Start difference. First operand 46009 states and 55600 transitions. Second operand 9 states. [2020-10-29 04:55:19,656 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:55:20,880 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:55:23,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:23,703 INFO L93 Difference]: Finished difference Result 95913 states and 121253 transitions. [2020-10-29 04:55:23,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:55:23,704 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 312 [2020-10-29 04:55:23,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:23,875 INFO L225 Difference]: With dead ends: 95913 [2020-10-29 04:55:23,875 INFO L226 Difference]: Without dead ends: 50541 [2020-10-29 04:55:23,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:55:23,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50541 states. [2020-10-29 04:55:25,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50541 to 49429. [2020-10-29 04:55:25,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49429 states. [2020-10-29 04:55:25,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49429 states to 49429 states and 59473 transitions. [2020-10-29 04:55:25,882 INFO L78 Accepts]: Start accepts. Automaton has 49429 states and 59473 transitions. Word has length 312 [2020-10-29 04:55:25,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:25,883 INFO L481 AbstractCegarLoop]: Abstraction has 49429 states and 59473 transitions. [2020-10-29 04:55:25,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:55:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 49429 states and 59473 transitions. [2020-10-29 04:55:25,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-29 04:55:25,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:25,913 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:25,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:55:25,913 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:25,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:25,914 INFO L82 PathProgramCache]: Analyzing trace with hash -285496143, now seen corresponding path program 1 times [2020-10-29 04:55:25,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:25,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993670351] [2020-10-29 04:55:25,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:25,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:26,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:27,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:29,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:30,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:30,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:30,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-29 04:55:30,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:55:30,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4220 [2020-10-29 04:55:30,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:30,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:55:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 320 [2020-10-29 04:55:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:30,515 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:30,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:30,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:30,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:30,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:30,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:30,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:55:30,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:30,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:30,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:30,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:30,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:30,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:30,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:30,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:30,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:30,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 04:55:30,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:30,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 04:55:30,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:30,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 04:55:30,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 04:55:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:30,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:30,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:30,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:55:30,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:30,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 04:55:30,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:30,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:30,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:30,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:30,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 04:55:30,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 04:55:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:30,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:30,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:30,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 04:55:30,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:30,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 04:55:30,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:30,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:30,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:55:30,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:30,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 04:55:30,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 04:55:31,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993670351] [2020-10-29 04:55:31,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:31,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:55:31,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225271862] [2020-10-29 04:55:31,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:55:31,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:31,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:55:31,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:55:31,166 INFO L87 Difference]: Start difference. First operand 49429 states and 59473 transitions. Second operand 9 states. [2020-10-29 04:55:31,422 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:31,953 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:34,238 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:38,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:38,004 INFO L93 Difference]: Finished difference Result 148097 states and 185046 transitions. [2020-10-29 04:55:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 04:55:38,004 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 313 [2020-10-29 04:55:38,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:38,325 INFO L225 Difference]: With dead ends: 148097 [2020-10-29 04:55:38,326 INFO L226 Difference]: Without dead ends: 98881 [2020-10-29 04:55:38,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:55:38,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98881 states. [2020-10-29 04:55:41,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98881 to 95148. [2020-10-29 04:55:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95148 states. [2020-10-29 04:55:41,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95148 states to 95148 states and 114354 transitions. [2020-10-29 04:55:41,831 INFO L78 Accepts]: Start accepts. Automaton has 95148 states and 114354 transitions. Word has length 313 [2020-10-29 04:55:41,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:41,832 INFO L481 AbstractCegarLoop]: Abstraction has 95148 states and 114354 transitions. [2020-10-29 04:55:41,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:55:41,832 INFO L276 IsEmpty]: Start isEmpty. Operand 95148 states and 114354 transitions. [2020-10-29 04:55:41,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-29 04:55:41,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:41,865 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:41,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:55:41,865 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:41,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:41,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1918707017, now seen corresponding path program 1 times [2020-10-29 04:55:41,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:41,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280764360] [2020-10-29 04:55:41,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:41,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:42,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:42,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:45,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:46,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:46,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-29 04:55:46,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:55:46,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 04:55:46,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:46,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:46,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:55:46,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:46,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 04:55:46,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:47,249 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:47,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:47,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:47,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:47,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:47,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 04:55:47,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:47,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:47,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:47,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:47,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:47,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:47,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:47,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:47,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:47,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 04:55:47,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:47,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 04:55:47,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:47,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:55:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 04:55:47,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:47,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 04:55:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:47,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:47,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:47,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:55:47,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:47,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 04:55:47,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:47,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 04:55:47,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:47,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 04:55:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:47,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:47,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:47,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 04:55:47,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:47,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-29 04:55:47,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:47,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:47,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:47,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:47,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 04:55:47,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:55:48,201 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 148 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 04:55:48,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280764360] [2020-10-29 04:55:48,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:48,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:55:48,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560670888] [2020-10-29 04:55:48,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:55:48,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:48,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:55:48,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:55:48,203 INFO L87 Difference]: Start difference. First operand 95148 states and 114354 transitions. Second operand 11 states. [2020-10-29 04:55:48,469 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:49,382 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 163 [2020-10-29 04:55:50,940 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-29 04:55:51,947 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:52,566 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-29 04:55:53,960 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 164 [2020-10-29 04:55:56,237 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-29 04:55:57,869 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:56:09,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:09,821 INFO L93 Difference]: Finished difference Result 322606 states and 439316 transitions. [2020-10-29 04:56:09,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 04:56:09,822 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 325 [2020-10-29 04:56:09,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:11,795 INFO L225 Difference]: With dead ends: 322606 [2020-10-29 04:56:11,795 INFO L226 Difference]: Without dead ends: 228511 [2020-10-29 04:56:11,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=477, Invalid=1973, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 04:56:12,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228511 states. [2020-10-29 04:56:19,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228511 to 216449. [2020-10-29 04:56:19,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216449 states. [2020-10-29 04:56:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216449 states to 216449 states and 264916 transitions. [2020-10-29 04:56:20,232 INFO L78 Accepts]: Start accepts. Automaton has 216449 states and 264916 transitions. Word has length 325 [2020-10-29 04:56:20,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:20,232 INFO L481 AbstractCegarLoop]: Abstraction has 216449 states and 264916 transitions. [2020-10-29 04:56:20,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:56:20,232 INFO L276 IsEmpty]: Start isEmpty. Operand 216449 states and 264916 transitions. [2020-10-29 04:56:20,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-29 04:56:20,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:20,330 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:20,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:56:20,331 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:20,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:20,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1015245954, now seen corresponding path program 1 times [2020-10-29 04:56:20,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:20,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256535476] [2020-10-29 04:56:20,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:20,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:20,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking...