/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/Problem16_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:56:07,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:56:07,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:56:07,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:56:07,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:56:07,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:56:07,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:56:07,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:56:07,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:56:07,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:56:07,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:56:07,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:56:07,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:56:07,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:56:07,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:56:07,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:56:07,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:56:07,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:56:07,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:56:07,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:56:07,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:56:07,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:56:07,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:56:07,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:56:07,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:56:07,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:56:07,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:56:07,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:56:07,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:56:07,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:56:07,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:56:07,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:56:07,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:56:07,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:56:07,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:56:07,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:56:07,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:56:07,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:56:07,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:56:07,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:56:07,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:56:07,619 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 07:56:07,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:56:07,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:56:07,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:56:07,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:56:07,661 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:56:07,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:56:07,662 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:56:07,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:56:07,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:56:07,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:56:07,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:56:07,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:56:07,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:56:07,663 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:56:07,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:56:07,663 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:56:07,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:56:07,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:56:07,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:56:07,664 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:56:07,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:56:07,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:56:07,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:56:07,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:56:07,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:56:07,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:56:07,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:56:07,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:56:07,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:56:07,666 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:56:08,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:56:08,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:56:08,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:56:08,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:56:08,099 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:56:08,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label05.c [2020-10-29 07:56:08,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c0960ad0/7a52ec4e62594261b8920b8a4135e432/FLAG8676d6986 [2020-10-29 07:56:08,947 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:56:08,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label05.c [2020-10-29 07:56:08,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c0960ad0/7a52ec4e62594261b8920b8a4135e432/FLAG8676d6986 [2020-10-29 07:56:09,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c0960ad0/7a52ec4e62594261b8920b8a4135e432 [2020-10-29 07:56:09,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:56:09,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:56:09,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:56:09,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:56:09,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:56:09,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:56:09" (1/1) ... [2020-10-29 07:56:09,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a25bbf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:56:09, skipping insertion in model container [2020-10-29 07:56:09,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:56:09" (1/1) ... [2020-10-29 07:56:09,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:56:09,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:56:10,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:56:10,233 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:56:10,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:56:10,500 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:56:10,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:56:10 WrapperNode [2020-10-29 07:56:10,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:56:10,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:56:10,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:56:10,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:56:10,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:56:10" (1/1) ... [2020-10-29 07:56:10,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:56:10" (1/1) ... [2020-10-29 07:56:10,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:56:10" (1/1) ... [2020-10-29 07:56:10,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:56:10" (1/1) ... [2020-10-29 07:56:10,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:56:10" (1/1) ... [2020-10-29 07:56:10,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:56:10" (1/1) ... [2020-10-29 07:56:10,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:56:10" (1/1) ... [2020-10-29 07:56:10,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:56:10,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:56:10,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:56:10,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:56:10,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:56:10" (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 07:56:10,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:56:10,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:56:10,874 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:56:10,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:56:10,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:56:10,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:56:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:56:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:56:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:56:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:56:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:56:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:56:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:56:10,878 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:56:10,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:56:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:56:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:56:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:56:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:56:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:56:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:56:13,723 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:56:13,726 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:56:13,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:56:13 BoogieIcfgContainer [2020-10-29 07:56:13,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:56:13,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:56:13,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:56:13,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:56:13,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:56:09" (1/3) ... [2020-10-29 07:56:13,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa521e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:56:13, skipping insertion in model container [2020-10-29 07:56:13,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:56:10" (2/3) ... [2020-10-29 07:56:13,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa521e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:56:13, skipping insertion in model container [2020-10-29 07:56:13,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:56:13" (3/3) ... [2020-10-29 07:56:13,742 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label05.c [2020-10-29 07:56:13,758 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:56:13,765 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:56:13,782 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:56:13,832 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:56:13,832 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:56:13,832 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:56:13,832 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:56:13,833 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:56:13,833 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:56:13,833 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:56:13,833 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:56:13,876 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-29 07:56:13,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 07:56:13,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:13,884 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] [2020-10-29 07:56:13,885 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:13,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:13,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1612006268, now seen corresponding path program 1 times [2020-10-29 07:56:13,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:13,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952569270] [2020-10-29 07:56:13,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:14,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:14,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:14,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 07:56:14,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:14,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-29 07:56:14,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:14,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:56:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:56:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 07:56:14,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:56:14,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:14,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:14,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:14,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:14,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:14,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 07:56:14,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:14,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:14,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:14,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:14,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:56:14,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:56:14,874 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 07:56:14,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952569270] [2020-10-29 07:56:14,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:56:14,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:56:14,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031551274] [2020-10-29 07:56:14,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:56:14,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:14,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:56:14,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:56:14,915 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-29 07:56:19,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:19,796 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-29 07:56:19,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:56:19,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-29 07:56:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:19,822 INFO L225 Difference]: With dead ends: 1174 [2020-10-29 07:56:19,823 INFO L226 Difference]: Without dead ends: 697 [2020-10-29 07:56:19,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:56:19,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-29 07:56:19,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-29 07:56:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-29 07:56:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-29 07:56:19,972 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 26 [2020-10-29 07:56:19,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:19,973 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-29 07:56:19,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:56:19,973 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-29 07:56:19,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 07:56:19,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:19,979 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:56:19,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:56:19,980 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:19,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:19,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1937786658, now seen corresponding path program 1 times [2020-10-29 07:56:19,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:19,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832683553] [2020-10-29 07:56:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:20,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:20,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:21,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:21,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 07:56:21,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:56:21,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1079 [2020-10-29 07:56:21,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:21,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:21,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:56:21,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:56:21,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:56:21,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:56:21,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:21,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:21,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:21,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:21,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:21,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:56:21,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:21,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:21,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:21,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:21,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:56:21,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:56:21,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:21,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:21,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:21,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:56:21,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:21,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 07:56:21,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:21,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:56:21,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:56:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:56:21,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832683553] [2020-10-29 07:56:21,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:56:21,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:56:21,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973430286] [2020-10-29 07:56:21,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:56:21,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:21,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:56:21,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:56:21,578 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 7 states. [2020-10-29 07:56:26,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:26,819 INFO L93 Difference]: Finished difference Result 1741 states and 2663 transitions. [2020-10-29 07:56:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:56:26,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-29 07:56:26,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:26,827 INFO L225 Difference]: With dead ends: 1741 [2020-10-29 07:56:26,828 INFO L226 Difference]: Without dead ends: 1057 [2020-10-29 07:56:26,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:56:26,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2020-10-29 07:56:26,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1040. [2020-10-29 07:56:26,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-10-29 07:56:26,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1424 transitions. [2020-10-29 07:56:26,881 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1424 transitions. Word has length 101 [2020-10-29 07:56:26,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:26,882 INFO L481 AbstractCegarLoop]: Abstraction has 1040 states and 1424 transitions. [2020-10-29 07:56:26,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:56:26,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1424 transitions. [2020-10-29 07:56:26,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 07:56:26,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:26,886 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:56:26,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:56:26,887 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:26,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:26,887 INFO L82 PathProgramCache]: Analyzing trace with hash 30607196, now seen corresponding path program 1 times [2020-10-29 07:56:26,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:26,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360100121] [2020-10-29 07:56:26,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:26,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:27,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:27,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:27,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 07:56:27,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:56:27,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-10-29 07:56:27,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:27,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:27,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:56:27,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:56:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:56:27,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:27,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:27,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:27,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:27,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:27,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 07:56:27,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:27,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:27,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:56:27,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:56:27,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:27,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:28,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:28,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:56:28,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:28,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 07:56:28,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:28,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:28,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:28,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:28,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:56:28,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:56:28,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360100121] [2020-10-29 07:56:28,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:56:28,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:56:28,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092285355] [2020-10-29 07:56:28,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:56:28,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:28,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:56:28,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:56:28,117 INFO L87 Difference]: Start difference. First operand 1040 states and 1424 transitions. Second operand 7 states. [2020-10-29 07:56:33,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:33,542 INFO L93 Difference]: Finished difference Result 3173 states and 4420 transitions. [2020-10-29 07:56:33,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:56:33,545 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2020-10-29 07:56:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:33,565 INFO L225 Difference]: With dead ends: 3173 [2020-10-29 07:56:33,565 INFO L226 Difference]: Without dead ends: 2139 [2020-10-29 07:56:33,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:56:33,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2020-10-29 07:56:33,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2090. [2020-10-29 07:56:33,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2020-10-29 07:56:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 2621 transitions. [2020-10-29 07:56:33,655 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 2621 transitions. Word has length 102 [2020-10-29 07:56:33,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:33,655 INFO L481 AbstractCegarLoop]: Abstraction has 2090 states and 2621 transitions. [2020-10-29 07:56:33,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:56:33,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 2621 transitions. [2020-10-29 07:56:33,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 07:56:33,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:33,661 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 07:56:33,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:56:33,661 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:33,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:33,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1627198314, now seen corresponding path program 1 times [2020-10-29 07:56:33,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:33,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448164430] [2020-10-29 07:56:33,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:33,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:33,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:34,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:34,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:35,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:36,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:36,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-29 07:56:36,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:56:36,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2887 [2020-10-29 07:56:36,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:36,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:36,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:56:36,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:56:36,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 07:56:36,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:56:36,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:36,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:36,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:36,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:36,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:56:36,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:36,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:56:36,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:56:36,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:36,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:36,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:37,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:37,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:56:37,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:56:37,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 07:56:37,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:37,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:37,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:37,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:37,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:56:37,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:56:37,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 07:56:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:37,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:37,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:37,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 07:56:37,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:37,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 07:56:37,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:37,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 07:56:37,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:56:37,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448164430] [2020-10-29 07:56:37,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:37,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:56:37,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095532675] [2020-10-29 07:56:37,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:56:37,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:37,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:56:37,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:56:37,360 INFO L87 Difference]: Start difference. First operand 2090 states and 2621 transitions. Second operand 8 states. [2020-10-29 07:56:43,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:43,015 INFO L93 Difference]: Finished difference Result 4921 states and 6343 transitions. [2020-10-29 07:56:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:56:43,016 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 189 [2020-10-29 07:56:43,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:43,033 INFO L225 Difference]: With dead ends: 4921 [2020-10-29 07:56:43,033 INFO L226 Difference]: Without dead ends: 2837 [2020-10-29 07:56:43,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:56:43,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2020-10-29 07:56:43,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 2450. [2020-10-29 07:56:43,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2450 states. [2020-10-29 07:56:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 3043 transitions. [2020-10-29 07:56:43,126 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 3043 transitions. Word has length 189 [2020-10-29 07:56:43,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:43,127 INFO L481 AbstractCegarLoop]: Abstraction has 2450 states and 3043 transitions. [2020-10-29 07:56:43,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:56:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 3043 transitions. [2020-10-29 07:56:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-29 07:56:43,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:43,135 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-29 07:56:43,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:56:43,135 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:43,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:43,136 INFO L82 PathProgramCache]: Analyzing trace with hash 807348936, now seen corresponding path program 1 times [2020-10-29 07:56:43,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:43,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127866685] [2020-10-29 07:56:43,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:43,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:43,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:45,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:45,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:48,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:48,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-29 07:56:48,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:56:48,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 07:56:48,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:48,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 07:56:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 07:56:48,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:48,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:48,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:48,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:48,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:48,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:48,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:56:48,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:48,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:48,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:48,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:48,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:56:48,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:48,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:48,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:48,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:56:48,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:48,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:56:48,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:48,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:56:48,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:48,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 07:56:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:48,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:48,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:48,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:56:48,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:48,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 07:56:48,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:48,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 07:56:48,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:48,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-29 07:56:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:48,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:48,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:48,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 07:56:48,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:48,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 07:56:48,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:48,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-29 07:56:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:48,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 155 proven. 114 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 07:56:49,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127866685] [2020-10-29 07:56:49,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:49,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:56:49,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990874041] [2020-10-29 07:56:49,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:56:49,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:49,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:56:49,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:56:49,133 INFO L87 Difference]: Start difference. First operand 2450 states and 3043 transitions. Second operand 7 states. [2020-10-29 07:56:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:55,162 INFO L93 Difference]: Finished difference Result 6318 states and 8048 transitions. [2020-10-29 07:56:55,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:56:55,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-29 07:56:55,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:55,187 INFO L225 Difference]: With dead ends: 6318 [2020-10-29 07:56:55,187 INFO L226 Difference]: Without dead ends: 3874 [2020-10-29 07:56:55,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:56:55,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2020-10-29 07:56:55,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 3503. [2020-10-29 07:56:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3503 states. [2020-10-29 07:56:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 4236 transitions. [2020-10-29 07:56:55,326 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 4236 transitions. Word has length 370 [2020-10-29 07:56:55,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:55,327 INFO L481 AbstractCegarLoop]: Abstraction has 3503 states and 4236 transitions. [2020-10-29 07:56:55,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:56:55,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 4236 transitions. [2020-10-29 07:56:55,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-29 07:56:55,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:55,344 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:56:55,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:56:55,344 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:55,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:55,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1975515524, now seen corresponding path program 1 times [2020-10-29 07:56:55,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:55,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736576914] [2020-10-29 07:56:55,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:55,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:55,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:56,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:59,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:00,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:00,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-29 07:57:00,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:57:00,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 07:57:00,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:00,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:57:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:57:00,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-29 07:57:00,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:57:00,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:00,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:00,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:00,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:00,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:00,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:57:00,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:00,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:57:00,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:57:00,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:00,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:01,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:01,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 07:57:01,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:01,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-29 07:57:01,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:01,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:01,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:01,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:01,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 07:57:01,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:01,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-29 07:57:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:01,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:01,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:57:01,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:01,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 07:57:01,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:01,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 07:57:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:01,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:57:01,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-29 07:57:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:01,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:01,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:01,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 07:57:01,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:01,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 07:57:01,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:01,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:01,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:01,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 07:57:01,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:01,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:02,376 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 54 proven. 203 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 07:57:02,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736576914] [2020-10-29 07:57:02,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:02,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:57:02,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561475818] [2020-10-29 07:57:02,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:57:02,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:02,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:57:02,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:57:02,383 INFO L87 Difference]: Start difference. First operand 3503 states and 4236 transitions. Second operand 7 states. [2020-10-29 07:57:09,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:09,980 INFO L93 Difference]: Finished difference Result 7389 states and 8908 transitions. [2020-10-29 07:57:09,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:57:09,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 488 [2020-10-29 07:57:09,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:10,005 INFO L225 Difference]: With dead ends: 7389 [2020-10-29 07:57:10,005 INFO L226 Difference]: Without dead ends: 3892 [2020-10-29 07:57:10,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:57:10,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2020-10-29 07:57:10,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 3844. [2020-10-29 07:57:10,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3844 states. [2020-10-29 07:57:10,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 4602 transitions. [2020-10-29 07:57:10,123 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 4602 transitions. Word has length 488 [2020-10-29 07:57:10,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:10,124 INFO L481 AbstractCegarLoop]: Abstraction has 3844 states and 4602 transitions. [2020-10-29 07:57:10,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:57:10,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 4602 transitions. [2020-10-29 07:57:10,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-10-29 07:57:10,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:10,142 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2020-10-29 07:57:10,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:57:10,143 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:10,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:10,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1317364140, now seen corresponding path program 1 times [2020-10-29 07:57:10,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:10,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169685451] [2020-10-29 07:57:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:10,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:10,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:11,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:14,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:14,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 588 [2020-10-29 07:57:14,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:57:14,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4271 [2020-10-29 07:57:14,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:14,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:14,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:14,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 414 [2020-10-29 07:57:14,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-29 07:57:14,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:57:14,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:14,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:14,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:14,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:14,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:14,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:57:14,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:14,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:14,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:57:14,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:14,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:14,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:14,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:57:14,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:14,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 07:57:14,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:14,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:14,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:14,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:14,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:14,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:14,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 07:57:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:15,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:15,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 07:57:15,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:15,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 07:57:15,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:15,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 07:57:15,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:15,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-29 07:57:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:15,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:15,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:15,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 07:57:15,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:15,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 07:57:15,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:15,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:15,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:15,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:15,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 07:57:15,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 341 proven. 2 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-29 07:57:15,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169685451] [2020-10-29 07:57:15,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:15,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:57:15,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289608909] [2020-10-29 07:57:15,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:57:15,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:15,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:57:15,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:57:15,860 INFO L87 Difference]: Start difference. First operand 3844 states and 4602 transitions. Second operand 7 states. [2020-10-29 07:57:22,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:22,212 INFO L93 Difference]: Finished difference Result 9090 states and 11192 transitions. [2020-10-29 07:57:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:57:22,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 572 [2020-10-29 07:57:22,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:22,241 INFO L225 Difference]: With dead ends: 9090 [2020-10-29 07:57:22,241 INFO L226 Difference]: Without dead ends: 5252 [2020-10-29 07:57:22,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:57:22,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5252 states. [2020-10-29 07:57:22,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5252 to 5226. [2020-10-29 07:57:22,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5226 states. [2020-10-29 07:57:22,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5226 states to 5226 states and 6298 transitions. [2020-10-29 07:57:22,400 INFO L78 Accepts]: Start accepts. Automaton has 5226 states and 6298 transitions. Word has length 572 [2020-10-29 07:57:22,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:22,401 INFO L481 AbstractCegarLoop]: Abstraction has 5226 states and 6298 transitions. [2020-10-29 07:57:22,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:57:22,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5226 states and 6298 transitions. [2020-10-29 07:57:22,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-10-29 07:57:22,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:22,423 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:57:22,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:57:22,424 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:22,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:22,424 INFO L82 PathProgramCache]: Analyzing trace with hash 513289602, now seen corresponding path program 1 times [2020-10-29 07:57:22,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:22,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390436526] [2020-10-29 07:57:22,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:22,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:22,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:23,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:24,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:24,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:27,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:27,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 597 [2020-10-29 07:57:27,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:57:27,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 07:57:27,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:27,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:27,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-29 07:57:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-29 07:57:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:27,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:27,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:27,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:27,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:27,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:57:27,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:27,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:27,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:27,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:27,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:27,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:27,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:57:27,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:27,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:57:27,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:27,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:27,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:27,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:27,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:57:27,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:27,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 07:57:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:27,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:28,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:28,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 07:57:28,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:28,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-29 07:57:28,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:28,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 07:57:28,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:28,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-29 07:57:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:28,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:28,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:28,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:57:28,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:28,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:57:28,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:28,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:28,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:28,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 07:57:28,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:28,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:28,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-29 07:57:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:28,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:28,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:28,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 07:57:28,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:28,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 07:57:28,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:28,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 07:57:28,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:28,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 168 proven. 209 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-10-29 07:57:28,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390436526] [2020-10-29 07:57:28,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:28,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:57:28,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229254171] [2020-10-29 07:57:28,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:57:28,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:28,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:57:28,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:57:28,911 INFO L87 Difference]: Start difference. First operand 5226 states and 6298 transitions. Second operand 7 states. [2020-10-29 07:57:35,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:35,548 INFO L93 Difference]: Finished difference Result 13217 states and 16154 transitions. [2020-10-29 07:57:35,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:57:35,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 579 [2020-10-29 07:57:35,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:35,580 INFO L225 Difference]: With dead ends: 13217 [2020-10-29 07:57:35,580 INFO L226 Difference]: Without dead ends: 7262 [2020-10-29 07:57:35,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:57:35,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7262 states. [2020-10-29 07:57:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7262 to 6884. [2020-10-29 07:57:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6884 states. [2020-10-29 07:57:35,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6884 states to 6884 states and 7421 transitions. [2020-10-29 07:57:35,772 INFO L78 Accepts]: Start accepts. Automaton has 6884 states and 7421 transitions. Word has length 579 [2020-10-29 07:57:35,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:35,773 INFO L481 AbstractCegarLoop]: Abstraction has 6884 states and 7421 transitions. [2020-10-29 07:57:35,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:57:35,773 INFO L276 IsEmpty]: Start isEmpty. Operand 6884 states and 7421 transitions. [2020-10-29 07:57:35,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2020-10-29 07:57:35,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:35,785 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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] [2020-10-29 07:57:35,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:57:35,785 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:35,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:35,786 INFO L82 PathProgramCache]: Analyzing trace with hash -454560404, now seen corresponding path program 1 times [2020-10-29 07:57:35,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:35,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803499050] [2020-10-29 07:57:35,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:36,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:36,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:36,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:36,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:40,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:40,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 642 [2020-10-29 07:57:40,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:57:40,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 07:57:40,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:40,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 07:57:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-29 07:57:40,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:41,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:41,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:41,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:41,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:41,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:41,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:57:41,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:41,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:41,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:41,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:41,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:41,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:41,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:57:41,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:41,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 07:57:41,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:41,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:57:41,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:41,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 07:57:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:41,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:41,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-29 07:57:41,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:41,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-29 07:57:41,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:41,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:41,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:41,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:41,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-29 07:57:41,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:41,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-29 07:57:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:41,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:41,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:41,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 07:57:41,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:41,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 07:57:41,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:41,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-29 07:57:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:41,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:41,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-29 07:57:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:41,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:41,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:41,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 07:57:41,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:41,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 07:57:41,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:41,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 07:57:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:41,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 177 proven. 275 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2020-10-29 07:57:42,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803499050] [2020-10-29 07:57:42,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:42,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:57:42,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962220401] [2020-10-29 07:57:42,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:57:42,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:42,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:57:42,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:57:42,153 INFO L87 Difference]: Start difference. First operand 6884 states and 7421 transitions. Second operand 7 states. [2020-10-29 07:57:46,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:46,722 INFO L93 Difference]: Finished difference Result 19916 states and 21688 transitions. [2020-10-29 07:57:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:57:46,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 624 [2020-10-29 07:57:46,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:46,763 INFO L225 Difference]: With dead ends: 19916 [2020-10-29 07:57:46,763 INFO L226 Difference]: Without dead ends: 12692 [2020-10-29 07:57:46,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:57:46,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12692 states. [2020-10-29 07:57:47,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12692 to 11669. [2020-10-29 07:57:47,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11669 states. [2020-10-29 07:57:47,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11669 states to 11669 states and 12687 transitions. [2020-10-29 07:57:47,053 INFO L78 Accepts]: Start accepts. Automaton has 11669 states and 12687 transitions. Word has length 624 [2020-10-29 07:57:47,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:47,053 INFO L481 AbstractCegarLoop]: Abstraction has 11669 states and 12687 transitions. [2020-10-29 07:57:47,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:57:47,054 INFO L276 IsEmpty]: Start isEmpty. Operand 11669 states and 12687 transitions. [2020-10-29 07:57:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2020-10-29 07:57:47,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:47,077 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 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 07:57:47,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:57:47,078 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:47,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1303028142, now seen corresponding path program 1 times [2020-10-29 07:57:47,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:47,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471932696] [2020-10-29 07:57:47,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:47,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:47,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:51,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:52,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:52,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 863 [2020-10-29 07:57:52,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:57:52,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-29 07:57:52,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:52,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:57:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:57:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 496 [2020-10-29 07:57:52,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:57:52,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:52,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:52,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:52,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:52,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:52,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:57:52,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:52,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:52,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:52,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:52,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:57:52,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:57:52,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:52,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:53,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:53,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:57:53,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:53,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-29 07:57:53,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:53,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-29 07:57:53,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:53,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 07:57:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:53,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:53,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:53,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 07:57:53,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:53,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-29 07:57:53,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:53,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 07:57:53,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:53,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-29 07:57:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:53,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:53,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:57:53,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:53,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:57:53,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:53,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:53,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:53,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 07:57:53,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:53,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:53,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2020-10-29 07:57:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:53,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:53,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 07:57:53,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:53,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 07:57:53,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:53,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:53,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:53,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-29 07:57:53,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:53,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 81 proven. 608 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-29 07:57:54,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471932696] [2020-10-29 07:57:54,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:54,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:57:54,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720025175] [2020-10-29 07:57:54,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:57:54,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:54,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:57:54,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:57:54,536 INFO L87 Difference]: Start difference. First operand 11669 states and 12687 transitions. Second operand 7 states. [2020-10-29 07:57:58,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:58,659 INFO L93 Difference]: Finished difference Result 23348 states and 25410 transitions. [2020-10-29 07:57:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:57:58,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 845 [2020-10-29 07:57:58,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:58,700 INFO L225 Difference]: With dead ends: 23348 [2020-10-29 07:57:58,700 INFO L226 Difference]: Without dead ends: 12022 [2020-10-29 07:57:58,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:57:58,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12022 states. [2020-10-29 07:57:58,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12022 to 12012. [2020-10-29 07:57:58,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12012 states. [2020-10-29 07:57:58,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12012 states to 12012 states and 13049 transitions. [2020-10-29 07:57:58,973 INFO L78 Accepts]: Start accepts. Automaton has 12012 states and 13049 transitions. Word has length 845 [2020-10-29 07:57:58,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:58,975 INFO L481 AbstractCegarLoop]: Abstraction has 12012 states and 13049 transitions. [2020-10-29 07:57:58,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:57:58,975 INFO L276 IsEmpty]: Start isEmpty. Operand 12012 states and 13049 transitions. [2020-10-29 07:57:58,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2020-10-29 07:57:58,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:58,998 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:57:58,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:57:58,998 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:58,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:58,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1251453106, now seen corresponding path program 1 times [2020-10-29 07:57:58,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:59,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607136523] [2020-10-29 07:57:59,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:59,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:59,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:59,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:02,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:04,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:04,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 907 [2020-10-29 07:58:04,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:58:04,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-29 07:58:04,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:04,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:58:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 615 [2020-10-29 07:58:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-29 07:58:04,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:04,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:58:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:04,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:04,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:58:04,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:04,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:58:04,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:04,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:04,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:58:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:04,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:04,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:04,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:58:04,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:04,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 07:58:04,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:04,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:04,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:04,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 07:58:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:04,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:04,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:04,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 07:58:04,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:58:04,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:04,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:04,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:04,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 07:58:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:04,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:04,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:04,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:58:04,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:04,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:58:04,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:04,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:04,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:04,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 07:58:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:04,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:04,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:58:04,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:04,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 07:58:04,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:04,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:04,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:58:04,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:04,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:58:04,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:58:04,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-29 07:58:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:04,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:05,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:05,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 07:58:05,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:05,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 07:58:05,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:05,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:05,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:58:05,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:58:05,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-29 07:58:05,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 692 proven. 2 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2020-10-29 07:58:06,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607136523] [2020-10-29 07:58:06,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:58:06,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:58:06,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577871600] [2020-10-29 07:58:06,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:58:06,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:58:06,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:58:06,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:58:06,399 INFO L87 Difference]: Start difference. First operand 12012 states and 13049 transitions. Second operand 7 states. [2020-10-29 07:58:11,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:58:11,225 INFO L93 Difference]: Finished difference Result 24373 states and 26558 transitions. [2020-10-29 07:58:11,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:58:11,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 887 [2020-10-29 07:58:11,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:58:11,283 INFO L225 Difference]: With dead ends: 24373 [2020-10-29 07:58:11,283 INFO L226 Difference]: Without dead ends: 13043 [2020-10-29 07:58:11,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:58:11,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13043 states. [2020-10-29 07:58:11,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13043 to 13033. [2020-10-29 07:58:11,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13033 states. [2020-10-29 07:58:11,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13033 states to 13033 states and 14110 transitions. [2020-10-29 07:58:11,582 INFO L78 Accepts]: Start accepts. Automaton has 13033 states and 14110 transitions. Word has length 887 [2020-10-29 07:58:11,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:58:11,584 INFO L481 AbstractCegarLoop]: Abstraction has 13033 states and 14110 transitions. [2020-10-29 07:58:11,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:58:11,584 INFO L276 IsEmpty]: Start isEmpty. Operand 13033 states and 14110 transitions. [2020-10-29 07:58:11,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2020-10-29 07:58:11,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:58:11,610 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:58:11,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:58:11,610 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:58:11,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:58:11,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1529414340, now seen corresponding path program 1 times [2020-10-29 07:58:11,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:58:11,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812738945] [2020-10-29 07:58:11,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:58:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:11,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:12,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:12,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:16,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:16,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 908 [2020-10-29 07:58:16,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:58:16,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 07:58:16,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:16,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:16,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:58:16,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 616 [2020-10-29 07:58:16,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-29 07:58:16,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:17,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:58:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:17,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:17,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:17,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:58:17,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:17,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:58:17,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:17,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:17,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:17,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:17,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:58:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:17,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:17,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:17,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:58:17,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:17,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 07:58:17,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:17,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:17,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:17,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:17,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:17,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:17,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 07:58:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:17,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:17,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:17,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 07:58:17,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:17,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:58:17,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:17,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:17,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:17,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:17,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:17,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 07:58:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:17,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:17,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:17,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:58:17,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:17,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:58:17,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:17,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:17,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:17,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 07:58:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:17,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:17,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:17,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 07:58:17,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:17,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:58:17,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:17,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:58:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 07:58:17,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:17,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-29 07:58:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:17,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:17,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:17,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 07:58:17,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:17,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-29 07:58:17,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:17,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:58:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:58:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-29 07:58:17,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 693 proven. 2 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2020-10-29 07:58:18,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812738945] [2020-10-29 07:58:18,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:58:18,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:58:18,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665182963] [2020-10-29 07:58:18,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:58:18,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:58:18,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:58:18,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:58:18,876 INFO L87 Difference]: Start difference. First operand 13033 states and 14110 transitions. Second operand 8 states. [2020-10-29 07:58:26,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:58:26,441 INFO L93 Difference]: Finished difference Result 30130 states and 32708 transitions. [2020-10-29 07:58:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:58:26,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 888 [2020-10-29 07:58:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:58:26,492 INFO L225 Difference]: With dead ends: 30130 [2020-10-29 07:58:26,492 INFO L226 Difference]: Without dead ends: 17101 [2020-10-29 07:58:26,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:58:26,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17101 states. [2020-10-29 07:58:26,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17101 to 16758. [2020-10-29 07:58:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16758 states. [2020-10-29 07:58:26,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16758 states to 16758 states and 18009 transitions. [2020-10-29 07:58:26,820 INFO L78 Accepts]: Start accepts. Automaton has 16758 states and 18009 transitions. Word has length 888 [2020-10-29 07:58:26,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:58:26,822 INFO L481 AbstractCegarLoop]: Abstraction has 16758 states and 18009 transitions. [2020-10-29 07:58:26,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:58:26,822 INFO L276 IsEmpty]: Start isEmpty. Operand 16758 states and 18009 transitions. [2020-10-29 07:58:26,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2020-10-29 07:58:26,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:58:26,854 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:58:26,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:58:26,854 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:58:26,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:58:26,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1667179838, now seen corresponding path program 1 times [2020-10-29 07:58:26,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:58:26,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976830233] [2020-10-29 07:58:26,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:58:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:27,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:27,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:27,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:29,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:32,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:32,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 933 [2020-10-29 07:58:32,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:58:32,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 07:58:32,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:32,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:58:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-29 07:58:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-29 07:58:32,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:32,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:58:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:32,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:32,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:32,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:58:32,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:32,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:58:32,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:32,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:32,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:32,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:32,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:32,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:32,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:58:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:32,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:32,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:32,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:58:32,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:32,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:58:32,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:32,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:32,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:32,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:32,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:32,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:32,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 07:58:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:32,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:32,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:32,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 07:58:32,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:32,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:58:32,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:32,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:32,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:32,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 07:58:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:32,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:32,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:32,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:58:32,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:32,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:58:32,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:32,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:32,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:32,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:32,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:32,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:32,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 07:58:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:32,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:32,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:32,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:58:32,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:32,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 07:58:32,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:32,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:58:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:58:32,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:32,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-29 07:58:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:32,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:32,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:32,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 07:58:32,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:32,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-29 07:58:32,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:32,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:58:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:58:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-29 07:58:32,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 718 proven. 2 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2020-10-29 07:58:34,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976830233] [2020-10-29 07:58:34,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:58:34,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:58:34,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240018622] [2020-10-29 07:58:34,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:58:34,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:58:34,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:58:34,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:58:34,477 INFO L87 Difference]: Start difference. First operand 16758 states and 18009 transitions. Second operand 7 states. [2020-10-29 07:58:39,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:58:39,551 INFO L93 Difference]: Finished difference Result 33865 states and 36548 transitions. [2020-10-29 07:58:39,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:58:39,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 913 [2020-10-29 07:58:39,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:58:39,608 INFO L225 Difference]: With dead ends: 33865 [2020-10-29 07:58:39,608 INFO L226 Difference]: Without dead ends: 17789 [2020-10-29 07:58:39,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:58:39,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17789 states. [2020-10-29 07:58:39,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17789 to 17777. [2020-10-29 07:58:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17777 states. [2020-10-29 07:58:39,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17777 states to 17777 states and 19059 transitions. [2020-10-29 07:58:39,957 INFO L78 Accepts]: Start accepts. Automaton has 17777 states and 19059 transitions. Word has length 913 [2020-10-29 07:58:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:58:39,959 INFO L481 AbstractCegarLoop]: Abstraction has 17777 states and 19059 transitions. [2020-10-29 07:58:39,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:58:39,959 INFO L276 IsEmpty]: Start isEmpty. Operand 17777 states and 19059 transitions. [2020-10-29 07:58:39,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2020-10-29 07:58:39,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:58:39,990 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:58:39,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:58:39,991 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:58:39,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:58:39,991 INFO L82 PathProgramCache]: Analyzing trace with hash 652946190, now seen corresponding path program 1 times [2020-10-29 07:58:39,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:58:39,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148880103] [2020-10-29 07:58:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:58:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:40,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:40,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:40,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:45,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:45,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1025 [2020-10-29 07:58:45,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:58:45,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-29 07:58:45,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:45,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:45,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:58:45,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-29 07:58:45,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 07:58:45,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:45,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:58:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:45,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:45,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:45,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:58:45,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:45,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:58:45,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:45,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:45,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:45,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:58:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:45,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:45,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:45,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:58:45,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:45,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 07:58:45,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:45,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:45,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:45,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 07:58:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:45,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:45,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:45,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 07:58:45,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:45,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 07:58:45,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:45,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:58:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 07:58:45,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:45,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 07:58:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:45,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:45,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:45,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 07:58:45,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 07:58:45,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:45,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:58:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:58:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 07:58:45,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:45,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2020-10-29 07:58:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:45,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:45,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 07:58:45,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:45,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 07:58:45,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:45,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-29 07:58:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:45,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:46,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2020-10-29 07:58:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:46,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:46,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:46,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 07:58:46,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:46,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 07:58:46,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:46,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:46,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:46,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-29 07:58:46,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:46,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 430 proven. 312 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2020-10-29 07:58:46,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148880103] [2020-10-29 07:58:46,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:58:46,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:58:46,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047078051] [2020-10-29 07:58:46,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:58:46,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:58:46,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:58:46,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:58:46,822 INFO L87 Difference]: Start difference. First operand 17777 states and 19059 transitions. Second operand 7 states. [2020-10-29 07:58:52,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:58:52,073 INFO L93 Difference]: Finished difference Result 36912 states and 39663 transitions. [2020-10-29 07:58:52,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:58:52,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1005 [2020-10-29 07:58:52,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:58:52,134 INFO L225 Difference]: With dead ends: 36912 [2020-10-29 07:58:52,134 INFO L226 Difference]: Without dead ends: 19478 [2020-10-29 07:58:52,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:58:52,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19478 states. [2020-10-29 07:58:52,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19478 to 18794. [2020-10-29 07:58:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18794 states. [2020-10-29 07:58:52,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18794 states to 18794 states and 19949 transitions. [2020-10-29 07:58:52,493 INFO L78 Accepts]: Start accepts. Automaton has 18794 states and 19949 transitions. Word has length 1005 [2020-10-29 07:58:52,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:58:52,495 INFO L481 AbstractCegarLoop]: Abstraction has 18794 states and 19949 transitions. [2020-10-29 07:58:52,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:58:52,495 INFO L276 IsEmpty]: Start isEmpty. Operand 18794 states and 19949 transitions. [2020-10-29 07:58:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2020-10-29 07:58:52,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:58:52,531 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:52,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 07:58:52,531 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:58:52,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:58:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash 822720298, now seen corresponding path program 1 times [2020-10-29 07:58:52,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:58:52,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311403597] [2020-10-29 07:58:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:58:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:52,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:53,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:53,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:57,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:57,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1039 [2020-10-29 07:58:57,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:58:57,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-29 07:58:57,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:57,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:58:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 544 [2020-10-29 07:58:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-29 07:58:57,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:58,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:58:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:58,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:58,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:58,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:58:58,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:58,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:58:58,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:58,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:58,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:58,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:58,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:58,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:58,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:58:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:58,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:58,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:58,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:58:58,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:58,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 07:58:58,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:58,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:58,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:58,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 07:58:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:58,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:58,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:58,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 07:58:58,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:58,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:58:58,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:58,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:58,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:58,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:58,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:58,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:58,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 07:58:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:58,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:58,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:58,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:58:58,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:58,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 07:58:58,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:58,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:58:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:58:58,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:58,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 07:58:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:58,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:58,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:58,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-29 07:58:58,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:58,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-29 07:58:58,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:58,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:58:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:58:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-29 07:58:58,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:58,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2020-10-29 07:58:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:58,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:58,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:58,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 07:58:58,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:58,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 07:58:58,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:58,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-29 07:58:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:58,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1733 backedges. 595 proven. 200 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2020-10-29 07:58:59,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311403597] [2020-10-29 07:58:59,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:58:59,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:58:59,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736725330] [2020-10-29 07:58:59,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:58:59,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:58:59,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:58:59,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:58:59,689 INFO L87 Difference]: Start difference. First operand 18794 states and 19949 transitions. Second operand 7 states. [2020-10-29 07:59:03,173 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:59:04,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:59:04,484 INFO L93 Difference]: Finished difference Result 38272 states and 40657 transitions. [2020-10-29 07:59:04,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:59:04,485 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1019 [2020-10-29 07:59:04,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:59:04,531 INFO L225 Difference]: With dead ends: 38272 [2020-10-29 07:59:04,531 INFO L226 Difference]: Without dead ends: 20160 [2020-10-29 07:59:04,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:59:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20160 states. [2020-10-29 07:59:04,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20160 to 20152. [2020-10-29 07:59:04,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20152 states. [2020-10-29 07:59:04,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20152 states to 20152 states and 21378 transitions. [2020-10-29 07:59:04,885 INFO L78 Accepts]: Start accepts. Automaton has 20152 states and 21378 transitions. Word has length 1019 [2020-10-29 07:59:04,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:59:04,886 INFO L481 AbstractCegarLoop]: Abstraction has 20152 states and 21378 transitions. [2020-10-29 07:59:04,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:59:04,886 INFO L276 IsEmpty]: Start isEmpty. Operand 20152 states and 21378 transitions. [2020-10-29 07:59:04,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2020-10-29 07:59:04,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:59:04,915 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 07:59:04,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 07:59:04,916 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:59:04,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:59:04,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1313687840, now seen corresponding path program 1 times [2020-10-29 07:59:04,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:59:04,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245749770] [2020-10-29 07:59:04,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:59:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:05,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:10,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:59:10,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1084 [2020-10-29 07:59:10,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:59:10,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-29 07:59:10,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:59:10,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:59:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:59:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 792 [2020-10-29 07:59:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-29 07:59:10,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:59:10,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:59:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:10,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:59:10,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:59:10,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:59:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:59:10,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:59:10,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:59:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:59:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:59:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:59:10,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:59:10,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:59:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:10,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:10,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:59:10,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 07:59:10,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:59:10,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 07:59:10,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:59:10,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:59:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:59:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:59:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:59:10,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:59:10,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 07:59:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:10,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:10,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:59:10,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 07:59:10,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:59:10,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 07:59:10,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:59:10,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:59:10,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:59:10,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:59:10,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:59:10,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:59:10,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-29 07:59:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:10,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:10,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:59:10,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-29 07:59:10,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:59:10,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:59:10,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:59:10,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:59:10,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:59:10,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:59:10,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:59:10,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:59:10,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-29 07:59:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:11,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:11,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:59:11,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 07:59:11,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:59:11,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 07:59:11,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:59:11,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:59:11,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:59:11,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:59:11,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 07:59:11,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:59:11,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-29 07:59:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:11,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:11,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:59:11,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 07:59:11,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:59:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-29 07:59:11,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:59:11,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:59:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:59:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:59:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-29 07:59:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:59:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1858 backedges. 869 proven. 2 refuted. 0 times theorem prover too weak. 987 trivial. 0 not checked. [2020-10-29 07:59:12,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245749770] [2020-10-29 07:59:12,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:59:12,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:59:12,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350375646] [2020-10-29 07:59:12,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:59:12,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:59:12,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:59:12,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:59:12,831 INFO L87 Difference]: Start difference. First operand 20152 states and 21378 transitions. Second operand 7 states. [2020-10-29 07:59:17,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:59:17,558 INFO L93 Difference]: Finished difference Result 43362 states and 46133 transitions. [2020-10-29 07:59:17,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:59:17,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1064 [2020-10-29 07:59:17,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:59:17,612 INFO L225 Difference]: With dead ends: 43362 [2020-10-29 07:59:17,613 INFO L226 Difference]: Without dead ends: 23892 [2020-10-29 07:59:17,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:59:17,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23892 states. [2020-10-29 07:59:18,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23892 to 23209. [2020-10-29 07:59:18,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23209 states. [2020-10-29 07:59:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23209 states to 23209 states and 24727 transitions. [2020-10-29 07:59:18,182 INFO L78 Accepts]: Start accepts. Automaton has 23209 states and 24727 transitions. Word has length 1064 [2020-10-29 07:59:18,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:59:18,183 INFO L481 AbstractCegarLoop]: Abstraction has 23209 states and 24727 transitions. [2020-10-29 07:59:18,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:59:18,184 INFO L276 IsEmpty]: Start isEmpty. Operand 23209 states and 24727 transitions. [2020-10-29 07:59:18,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2020-10-29 07:59:18,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:59:18,209 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:18,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 07:59:18,210 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:59:18,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:59:18,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1206369790, now seen corresponding path program 1 times [2020-10-29 07:59:18,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:59:18,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070995017] [2020-10-29 07:59:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:59:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:18,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:19,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:59:19,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1089 [2020-10-29 07:59:19,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:59:19,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1325 [2020-10-29 07:59:19,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:59:19,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:59:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:59:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1061 [2020-10-29 07:59:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 07:59:19,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:59:19,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:59:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:19,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:20,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:59:20,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:59:20,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:59:20,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:59:20,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:59:20,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:59:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:59:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:59:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:59:20,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:59:20,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:59:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:20,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:20,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:59:20,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:59:20,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:59:20,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 07:59:20,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:59:20,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:59:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:59:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:59:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:59:20,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:59:20,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 07:59:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:20,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:20,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:59:20,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 07:59:20,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:59:20,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 07:59:20,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:59:20,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:59:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:59:20,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:59:20,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:59:20,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:59:20,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 07:59:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:20,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:20,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:59:20,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-29 07:59:20,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:59:20,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 07:59:20,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:59:20,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:59:20,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:59:20,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:59:20,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:59:20,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:59:20,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-29 07:59:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:20,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:59:20,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 07:59:20,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:59:20,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:59:20,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:59:20,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:59:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:59:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:59:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:59:20,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:59:20,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-10-29 07:59:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:20,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:20,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:59:20,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 07:59:20,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:59:20,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 07:59:20,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:59:20,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:59:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:59:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:59:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-29 07:59:20,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:59:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 97 proven. 5 refuted. 0 times theorem prover too weak. 1762 trivial. 0 not checked. [2020-10-29 07:59:21,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070995017] [2020-10-29 07:59:21,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:59:21,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:59:21,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165964748] [2020-10-29 07:59:21,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:59:21,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:59:21,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:59:21,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:59:21,460 INFO L87 Difference]: Start difference. First operand 23209 states and 24727 transitions. Second operand 5 states. [2020-10-29 07:59:25,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:59:25,434 INFO L93 Difference]: Finished difference Result 45738 states and 48756 transitions. [2020-10-29 07:59:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:59:25,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1069 [2020-10-29 07:59:25,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:59:25,488 INFO L225 Difference]: With dead ends: 45738 [2020-10-29 07:59:25,489 INFO L226 Difference]: Without dead ends: 23211 [2020-10-29 07:59:25,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:59:25,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23211 states. [2020-10-29 07:59:25,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23211 to 22533. [2020-10-29 07:59:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22533 states. [2020-10-29 07:59:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22533 states to 22533 states and 23841 transitions. [2020-10-29 07:59:25,927 INFO L78 Accepts]: Start accepts. Automaton has 22533 states and 23841 transitions. Word has length 1069 [2020-10-29 07:59:25,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:59:25,928 INFO L481 AbstractCegarLoop]: Abstraction has 22533 states and 23841 transitions. [2020-10-29 07:59:25,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:59:25,928 INFO L276 IsEmpty]: Start isEmpty. Operand 22533 states and 23841 transitions. [2020-10-29 07:59:25,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1195 [2020-10-29 07:59:25,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:59:25,960 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:59:25,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 07:59:25,961 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:59:25,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:59:25,962 INFO L82 PathProgramCache]: Analyzing trace with hash 355317804, now seen corresponding path program 1 times [2020-10-29 07:59:25,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:59:25,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640536285] [2020-10-29 07:59:25,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:59:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:26,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:26,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:29,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking...