/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=SHALLOWEST --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/Problem14_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:25:48,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:25:48,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:25:48,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:25:48,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:25:48,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:25:48,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:25:48,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:25:48,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:25:48,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:25:48,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:25:48,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:25:48,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:25:48,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:25:48,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:25:48,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:25:48,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:25:48,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:25:48,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:25:48,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:25:49,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:25:49,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:25:49,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:25:49,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:25:49,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:25:49,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:25:49,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:25:49,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:25:49,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:25:49,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:25:49,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:25:49,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:25:49,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:25:49,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:25:49,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:25:49,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:25:49,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:25:49,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:25:49,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:25:49,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:25:49,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:25:49,059 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 [2020-10-26 23:25:49,115 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:25:49,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:25:49,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:25:49,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:25:49,120 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:25:49,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:25:49,121 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:25:49,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:25:49,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:25:49,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:25:49,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:25:49,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:25:49,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:25:49,123 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:25:49,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:25:49,124 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:25:49,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:25:49,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:25:49,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:25:49,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:25:49,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:25:49,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:25:49,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:25:49,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:25:49,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:25:49,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:25:49,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:25:49,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:25:49,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:25:49,127 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:25:49,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:25:49,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:25:49,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:25:49,577 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:25:49,577 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:25:49,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label25.c [2020-10-26 23:25:49,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae23da0f6/b9bb80a4ded54e0f8d856851e4ae1710/FLAG2ad8f66df [2020-10-26 23:25:50,443 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:25:50,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label25.c [2020-10-26 23:25:50,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae23da0f6/b9bb80a4ded54e0f8d856851e4ae1710/FLAG2ad8f66df [2020-10-26 23:25:50,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae23da0f6/b9bb80a4ded54e0f8d856851e4ae1710 [2020-10-26 23:25:50,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:25:50,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:25:50,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:25:50,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:25:50,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:25:50,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:25:50" (1/1) ... [2020-10-26 23:25:50,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@464bf060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:50, skipping insertion in model container [2020-10-26 23:25:50,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:25:50" (1/1) ... [2020-10-26 23:25:50,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:25:50,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:25:51,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:25:51,246 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:25:51,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:25:51,524 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:25:51,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51 WrapperNode [2020-10-26 23:25:51,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:25:51,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:25:51,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:25:51,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:25:51,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (1/1) ... [2020-10-26 23:25:51,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (1/1) ... [2020-10-26 23:25:51,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (1/1) ... [2020-10-26 23:25:51,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (1/1) ... [2020-10-26 23:25:51,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (1/1) ... [2020-10-26 23:25:51,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (1/1) ... [2020-10-26 23:25:51,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (1/1) ... [2020-10-26 23:25:51,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:25:51,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:25:51,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:25:51,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:25:51,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (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 [2020-10-26 23:25:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:25:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:25:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:25:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:25:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:25:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:25:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:25:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:25:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:25:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:25:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:25:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:25:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:25:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:25:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:25:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:25:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:25:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:25:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:25:53,694 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:25:53,694 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:25:53,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:25:53 BoogieIcfgContainer [2020-10-26 23:25:53,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:25:53,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:25:53,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:25:53,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:25:53,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:25:50" (1/3) ... [2020-10-26 23:25:53,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4dda05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:25:53, skipping insertion in model container [2020-10-26 23:25:53,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (2/3) ... [2020-10-26 23:25:53,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4dda05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:25:53, skipping insertion in model container [2020-10-26 23:25:53,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:25:53" (3/3) ... [2020-10-26 23:25:53,706 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label25.c [2020-10-26 23:25:53,718 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:25:53,724 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:25:53,737 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:25:53,766 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:25:53,766 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:25:53,766 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:25:53,767 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:25:53,767 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:25:53,767 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:25:53,767 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:25:53,767 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:25:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:25:53,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-26 23:25:53,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:53,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:53,804 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:53,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:53,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1671573206, now seen corresponding path program 1 times [2020-10-26 23:25:53,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:53,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234294747] [2020-10-26 23:25:53,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:54,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:54,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:54,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:25:54,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:54,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-10-26 23:25:54,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:25:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:25:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 23:25:54,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:25:54,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:54,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:55,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:55,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:55,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:55,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:25:55,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:25:55,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:25:55,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234294747] [2020-10-26 23:25:55,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:25:55,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:25:55,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660355348] [2020-10-26 23:25:55,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:25:55,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:55,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:25:55,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:25:55,067 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-26 23:25:58,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:58,875 INFO L93 Difference]: Finished difference Result 891 states and 1618 transitions. [2020-10-26 23:25:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:25:58,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-26 23:25:58,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:58,898 INFO L225 Difference]: With dead ends: 891 [2020-10-26 23:25:58,898 INFO L226 Difference]: Without dead ends: 565 [2020-10-26 23:25:58,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:25:58,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-26 23:25:59,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 561. [2020-10-26 23:25:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-26 23:25:59,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 856 transitions. [2020-10-26 23:25:59,078 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 856 transitions. Word has length 71 [2020-10-26 23:25:59,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:59,080 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 856 transitions. [2020-10-26 23:25:59,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:25:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 856 transitions. [2020-10-26 23:25:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-26 23:25:59,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:59,097 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:59,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:25:59,098 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:59,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:59,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1481986889, now seen corresponding path program 1 times [2020-10-26 23:25:59,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:59,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646328067] [2020-10-26 23:25:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:59,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:59,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:00,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:00,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:00,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-26 23:26:00,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:26:00,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1433 [2020-10-26 23:26:00,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:26:00,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:00,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:26:00,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:00,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:00,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:00,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:00,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:00,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:00,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:26:00,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:00,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:00,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:00,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:00,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:00,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:26:00,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:00,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-26 23:26:00,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:00,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:00,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:00,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:26:00,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:26:01,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646328067] [2020-10-26 23:26:01,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:26:01,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:26:01,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933835760] [2020-10-26 23:26:01,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:01,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:01,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:01,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:01,054 INFO L87 Difference]: Start difference. First operand 561 states and 856 transitions. Second operand 7 states. [2020-10-26 23:26:03,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:03,738 INFO L93 Difference]: Finished difference Result 1690 states and 2628 transitions. [2020-10-26 23:26:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:26:03,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-26 23:26:03,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:03,752 INFO L225 Difference]: With dead ends: 1690 [2020-10-26 23:26:03,752 INFO L226 Difference]: Without dead ends: 1135 [2020-10-26 23:26:03,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:26:03,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2020-10-26 23:26:03,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1123. [2020-10-26 23:26:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-10-26 23:26:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1625 transitions. [2020-10-26 23:26:03,828 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1625 transitions. Word has length 140 [2020-10-26 23:26:03,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:03,830 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1625 transitions. [2020-10-26 23:26:03,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:03,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1625 transitions. [2020-10-26 23:26:03,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-26 23:26:03,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:03,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:03,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:26:03,837 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:03,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:03,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1852885555, now seen corresponding path program 1 times [2020-10-26 23:26:03,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:03,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439295335] [2020-10-26 23:26:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:03,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:03,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:04,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:04,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:04,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-26 23:26:04,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:26:04,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-10-26 23:26:04,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:26:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 23:26:04,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:05,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:05,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:05,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:05,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:05,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:05,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:26:05,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:05,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:05,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:05,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:05,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:05,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:05,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:05,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:05,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:26:05,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:26:05,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:26:05,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:26:05,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439295335] [2020-10-26 23:26:05,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:26:05,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:26:05,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416481609] [2020-10-26 23:26:05,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:05,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:05,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:05,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:05,240 INFO L87 Difference]: Start difference. First operand 1123 states and 1625 transitions. Second operand 7 states. [2020-10-26 23:26:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:08,164 INFO L93 Difference]: Finished difference Result 3066 states and 4748 transitions. [2020-10-26 23:26:08,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:26:08,167 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-10-26 23:26:08,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:08,187 INFO L225 Difference]: With dead ends: 3066 [2020-10-26 23:26:08,187 INFO L226 Difference]: Without dead ends: 1949 [2020-10-26 23:26:08,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:26:08,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2020-10-26 23:26:08,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1881. [2020-10-26 23:26:08,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2020-10-26 23:26:08,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2540 transitions. [2020-10-26 23:26:08,313 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2540 transitions. Word has length 143 [2020-10-26 23:26:08,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:08,315 INFO L481 AbstractCegarLoop]: Abstraction has 1881 states and 2540 transitions. [2020-10-26 23:26:08,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2540 transitions. [2020-10-26 23:26:08,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-26 23:26:08,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:08,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:08,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:26:08,319 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:08,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:08,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1017444561, now seen corresponding path program 1 times [2020-10-26 23:26:08,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:08,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520777280] [2020-10-26 23:26:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:08,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:08,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:09,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:10,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:10,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-26 23:26:10,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:26:10,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1993 [2020-10-26 23:26:10,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:10,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:26:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:26:10,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-26 23:26:10,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:10,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:10,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:10,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:10,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:10,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:26:10,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:10,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:10,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:10,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:10,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:10,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:10,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:10,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:10,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:26:10,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:10,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:26:10,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:26:10,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:26:10,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520777280] [2020-10-26 23:26:10,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:26:10,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:26:10,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745537954] [2020-10-26 23:26:10,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:10,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:10,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:10,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:10,858 INFO L87 Difference]: Start difference. First operand 1881 states and 2540 transitions. Second operand 7 states. [2020-10-26 23:26:13,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:13,039 INFO L93 Difference]: Finished difference Result 3226 states and 4464 transitions. [2020-10-26 23:26:13,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:26:13,040 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-10-26 23:26:13,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:13,055 INFO L225 Difference]: With dead ends: 3226 [2020-10-26 23:26:13,055 INFO L226 Difference]: Without dead ends: 2085 [2020-10-26 23:26:13,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:26:13,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-10-26 23:26:13,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2071. [2020-10-26 23:26:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2071 states. [2020-10-26 23:26:13,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2736 transitions. [2020-10-26 23:26:13,146 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2736 transitions. Word has length 144 [2020-10-26 23:26:13,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:13,147 INFO L481 AbstractCegarLoop]: Abstraction has 2071 states and 2736 transitions. [2020-10-26 23:26:13,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:13,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2736 transitions. [2020-10-26 23:26:13,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-26 23:26:13,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:13,154 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:26:13,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:26:13,154 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:13,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:13,155 INFO L82 PathProgramCache]: Analyzing trace with hash -619307396, now seen corresponding path program 1 times [2020-10-26 23:26:13,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:13,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363083573] [2020-10-26 23:26:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:13,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:13,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:13,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:14,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:14,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:16,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:16,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-26 23:26:16,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:26:16,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2981 [2020-10-26 23:26:16,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:26:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-26 23:26:16,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:16,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:16,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:16,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:16,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:16,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:16,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:26:16,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:16,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:16,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:16,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:16,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:16,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:16,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:16,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:26:16,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:16,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:26:16,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:26:16,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:16,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:26:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:16,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:16,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:16,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:26:16,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:16,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:26:16,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:26:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:26:16,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 66 proven. 129 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:26:16,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363083573] [2020-10-26 23:26:16,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:16,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:26:16,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859149820] [2020-10-26 23:26:16,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:26:16,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:16,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:26:16,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:26:16,936 INFO L87 Difference]: Start difference. First operand 2071 states and 2736 transitions. Second operand 9 states. [2020-10-26 23:26:20,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:20,111 INFO L93 Difference]: Finished difference Result 3315 states and 4770 transitions. [2020-10-26 23:26:20,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:26:20,113 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 228 [2020-10-26 23:26:20,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:20,128 INFO L225 Difference]: With dead ends: 3315 [2020-10-26 23:26:20,128 INFO L226 Difference]: Without dead ends: 2117 [2020-10-26 23:26:20,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:26:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2020-10-26 23:26:20,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 2073. [2020-10-26 23:26:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2020-10-26 23:26:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2547 transitions. [2020-10-26 23:26:20,215 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2547 transitions. Word has length 228 [2020-10-26 23:26:20,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:20,216 INFO L481 AbstractCegarLoop]: Abstraction has 2073 states and 2547 transitions. [2020-10-26 23:26:20,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:26:20,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2547 transitions. [2020-10-26 23:26:20,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-26 23:26:20,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:20,221 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:20,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:26:20,221 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:20,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:20,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1803603312, now seen corresponding path program 1 times [2020-10-26 23:26:20,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:20,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138037324] [2020-10-26 23:26:20,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:20,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:20,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:20,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:20,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:22,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:23,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:23,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-26 23:26:23,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:26:23,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3290 [2020-10-26 23:26:23,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:23,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:26:23,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:23,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:26:23,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:23,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:23,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:23,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:23,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:23,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:23,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:26:23,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:23,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:23,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:23,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:23,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:23,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:23,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:23,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:23,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:26:23,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:23,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 23:26:23,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:23,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:23,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:23,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:26:23,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:24,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:26:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:24,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:24,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:26:24,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:24,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 23:26:24,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:26:24,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 127 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:26:24,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138037324] [2020-10-26 23:26:24,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:24,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:24,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138925889] [2020-10-26 23:26:24,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:26:24,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:24,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:26:24,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:26:24,541 INFO L87 Difference]: Start difference. First operand 2073 states and 2547 transitions. Second operand 8 states. [2020-10-26 23:26:27,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:27,247 INFO L93 Difference]: Finished difference Result 3990 states and 5205 transitions. [2020-10-26 23:26:27,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:26:27,248 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 238 [2020-10-26 23:26:27,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:27,264 INFO L225 Difference]: With dead ends: 3990 [2020-10-26 23:26:27,265 INFO L226 Difference]: Without dead ends: 2843 [2020-10-26 23:26:27,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:26:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2020-10-26 23:26:27,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2623. [2020-10-26 23:26:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2623 states. [2020-10-26 23:26:27,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 3157 transitions. [2020-10-26 23:26:27,359 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 3157 transitions. Word has length 238 [2020-10-26 23:26:27,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:27,360 INFO L481 AbstractCegarLoop]: Abstraction has 2623 states and 3157 transitions. [2020-10-26 23:26:27,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:26:27,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 3157 transitions. [2020-10-26 23:26:27,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-26 23:26:27,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:27,371 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 23:26:27,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:26:27,372 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:27,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:27,372 INFO L82 PathProgramCache]: Analyzing trace with hash 2004734579, now seen corresponding path program 1 times [2020-10-26 23:26:27,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:27,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613695870] [2020-10-26 23:26:27,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:27,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:27,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:28,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:29,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:30,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:32,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:32,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-26 23:26:32,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:26:32,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-26 23:26:32,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:26:32,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:26:32,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:32,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:32,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:32,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:32,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:32,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:26:32,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:32,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:32,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:32,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:32,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:32,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:26:32,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:32,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:26:32,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:26:32,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:32,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:26:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:32,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:33,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:33,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:33,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:26:33,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:26:33,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-26 23:26:33,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:33,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:33,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:33,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:26:33,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:33,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-26 23:26:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:33,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:33,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:33,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:26:33,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:33,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:26:33,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:33,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:33,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:26:33,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:33,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:26:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 274 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-26 23:26:33,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613695870] [2020-10-26 23:26:33,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:33,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:33,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648133649] [2020-10-26 23:26:33,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:33,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:33,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:33,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:33,782 INFO L87 Difference]: Start difference. First operand 2623 states and 3157 transitions. Second operand 7 states. [2020-10-26 23:26:35,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:35,496 INFO L93 Difference]: Finished difference Result 4447 states and 5497 transitions. [2020-10-26 23:26:35,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:26:35,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 361 [2020-10-26 23:26:35,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:35,508 INFO L225 Difference]: With dead ends: 4447 [2020-10-26 23:26:35,509 INFO L226 Difference]: Without dead ends: 2079 [2020-10-26 23:26:35,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:26:35,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2020-10-26 23:26:35,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 2057. [2020-10-26 23:26:35,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2057 states. [2020-10-26 23:26:35,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2357 transitions. [2020-10-26 23:26:35,592 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2357 transitions. Word has length 361 [2020-10-26 23:26:35,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:35,592 INFO L481 AbstractCegarLoop]: Abstraction has 2057 states and 2357 transitions. [2020-10-26 23:26:35,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2357 transitions. [2020-10-26 23:26:35,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-26 23:26:35,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:35,600 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:26:35,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:26:35,601 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:35,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:35,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1476111209, now seen corresponding path program 1 times [2020-10-26 23:26:35,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:35,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065460169] [2020-10-26 23:26:35,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:35,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:36,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:36,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:38,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:38,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-26 23:26:38,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:26:38,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2660 [2020-10-26 23:26:38,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:38,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:38,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:26:38,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:26:38,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:38,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:38,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:38,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:38,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:38,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:38,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:26:38,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:38,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:38,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:38,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:38,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:38,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:38,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:38,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:26:38,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:38,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:38,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:38,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:38,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:26:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:38,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:38,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:38,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:38,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 23:26:38,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:26:38,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:38,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:26:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:38,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:38,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:38,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:26:38,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:38,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 23:26:38,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:38,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:38,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:38,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:26:38,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-26 23:26:39,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065460169] [2020-10-26 23:26:39,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:39,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:39,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221987064] [2020-10-26 23:26:39,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:39,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:39,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:39,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:39,135 INFO L87 Difference]: Start difference. First operand 2057 states and 2357 transitions. Second operand 7 states. [2020-10-26 23:26:40,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:40,987 INFO L93 Difference]: Finished difference Result 3942 states and 4569 transitions. [2020-10-26 23:26:40,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:26:40,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 363 [2020-10-26 23:26:40,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:41,000 INFO L225 Difference]: With dead ends: 3942 [2020-10-26 23:26:41,000 INFO L226 Difference]: Without dead ends: 2257 [2020-10-26 23:26:41,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:26:41,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2020-10-26 23:26:41,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2241. [2020-10-26 23:26:41,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2241 states. [2020-10-26 23:26:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 2551 transitions. [2020-10-26 23:26:41,072 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 2551 transitions. Word has length 363 [2020-10-26 23:26:41,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:41,073 INFO L481 AbstractCegarLoop]: Abstraction has 2241 states and 2551 transitions. [2020-10-26 23:26:41,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 2551 transitions. [2020-10-26 23:26:41,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-26 23:26:41,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:41,083 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:41,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:26:41,084 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:41,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:41,085 INFO L82 PathProgramCache]: Analyzing trace with hash 432696142, now seen corresponding path program 2 times [2020-10-26 23:26:41,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:41,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812181206] [2020-10-26 23:26:41,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:41,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:41,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:41,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:42,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-26 23:26:46,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:26:46,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 23:26:46,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:26:46,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:26:46,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-26 23:26:46,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:46,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:26:46,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:46,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:46,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:26:46,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:46,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:26:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:46,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:26:46,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:46,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:26:46,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:26:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:46,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:26:46,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-26 23:26:46,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:46,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:46,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:26:46,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:26:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:47,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:47,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:26:47,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:47,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:26:47,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:47,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:26:47,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 612 proven. 72 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 23:26:47,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812181206] [2020-10-26 23:26:47,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:47,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:26:47,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701060711] [2020-10-26 23:26:47,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:26:47,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:47,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:26:47,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:26:47,385 INFO L87 Difference]: Start difference. First operand 2241 states and 2551 transitions. Second operand 8 states. [2020-10-26 23:26:49,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:49,473 INFO L93 Difference]: Finished difference Result 4322 states and 4997 transitions. [2020-10-26 23:26:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:26:49,474 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 473 [2020-10-26 23:26:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:49,485 INFO L225 Difference]: With dead ends: 4322 [2020-10-26 23:26:49,486 INFO L226 Difference]: Without dead ends: 2453 [2020-10-26 23:26:49,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:26:49,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2453 states. [2020-10-26 23:26:49,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2453 to 2427. [2020-10-26 23:26:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2020-10-26 23:26:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 2745 transitions. [2020-10-26 23:26:49,555 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 2745 transitions. Word has length 473 [2020-10-26 23:26:49,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:49,556 INFO L481 AbstractCegarLoop]: Abstraction has 2427 states and 2745 transitions. [2020-10-26 23:26:49,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:26:49,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 2745 transitions. [2020-10-26 23:26:49,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2020-10-26 23:26:49,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:49,573 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-26 23:26:49,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:26:49,573 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:49,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:49,574 INFO L82 PathProgramCache]: Analyzing trace with hash -785460819, now seen corresponding path program 1 times [2020-10-26 23:26:49,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:49,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123359521] [2020-10-26 23:26:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:49,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:49,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:50,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:53,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:54,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:54,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:54,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 652 [2020-10-26 23:26:54,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:26:54,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-26 23:26:54,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:26:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:26:54,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:54,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:54,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:54,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:54,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:54,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:26:54,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:54,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:54,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:54,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:54,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 23:26:54,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:54,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:54,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:54,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:54,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:54,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:26:54,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:54,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:54,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:54,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:26:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:55,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:55,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:55,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:55,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:26:55,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:55,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:55,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:55,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:26:55,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:55,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:26:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:55,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:55,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:55,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:55,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:55,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 23:26:55,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:55,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:55,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:55,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:26:55,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:55,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:26:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:55,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:55,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:55,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:26:55,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:55,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:26:55,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 23:26:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:55,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:55,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-26 23:26:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:55,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:55,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:55,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:26:55,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:55,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:26:55,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:55,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:55,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:26:55,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:55,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 549 proven. 179 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2020-10-26 23:26:55,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123359521] [2020-10-26 23:26:55,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:55,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:55,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913376001] [2020-10-26 23:26:55,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:55,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:55,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:55,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:55,781 INFO L87 Difference]: Start difference. First operand 2427 states and 2745 transitions. Second operand 7 states. [2020-10-26 23:26:59,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:59,035 INFO L93 Difference]: Finished difference Result 5437 states and 6362 transitions. [2020-10-26 23:26:59,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:26:59,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 632 [2020-10-26 23:26:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:59,053 INFO L225 Difference]: With dead ends: 5437 [2020-10-26 23:26:59,053 INFO L226 Difference]: Without dead ends: 3382 [2020-10-26 23:26:59,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:26:59,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3382 states. [2020-10-26 23:26:59,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3382 to 3361. [2020-10-26 23:26:59,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3361 states. [2020-10-26 23:26:59,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3361 states to 3361 states and 3921 transitions. [2020-10-26 23:26:59,171 INFO L78 Accepts]: Start accepts. Automaton has 3361 states and 3921 transitions. Word has length 632 [2020-10-26 23:26:59,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:59,172 INFO L481 AbstractCegarLoop]: Abstraction has 3361 states and 3921 transitions. [2020-10-26 23:26:59,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:59,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3361 states and 3921 transitions. [2020-10-26 23:26:59,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2020-10-26 23:26:59,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:59,193 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-26 23:26:59,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:26:59,194 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:59,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:59,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1223913373, now seen corresponding path program 1 times [2020-10-26 23:26:59,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:59,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753674828] [2020-10-26 23:26:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:59,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:59,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:01,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:03,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:03,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 659 [2020-10-26 23:27:03,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:27:03,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4221 [2020-10-26 23:27:03,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:03,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:03,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:27:03,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:27:03,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:03,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:03,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:03,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:03,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:03,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:27:03,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:03,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:03,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:03,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:03,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:03,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:27:03,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:03,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:03,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:03,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:03,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:03,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:03,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:27:03,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:03,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:03,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:03,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:03,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:03,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:03,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:27:03,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:03,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:03,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:04,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:04,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:27:04,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:27:04,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:27:04,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:04,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:27:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:04,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:04,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:04,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:04,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:04,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:27:04,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:04,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:27:04,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 610 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-26 23:27:04,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753674828] [2020-10-26 23:27:04,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:04,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:04,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558876043] [2020-10-26 23:27:04,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:04,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:04,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:04,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:04,421 INFO L87 Difference]: Start difference. First operand 3361 states and 3921 transitions. Second operand 7 states. [2020-10-26 23:27:06,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:06,544 INFO L93 Difference]: Finished difference Result 6550 states and 7716 transitions. [2020-10-26 23:27:06,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:27:06,545 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 639 [2020-10-26 23:27:06,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:06,561 INFO L225 Difference]: With dead ends: 6550 [2020-10-26 23:27:06,561 INFO L226 Difference]: Without dead ends: 3561 [2020-10-26 23:27:06,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:27:06,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2020-10-26 23:27:06,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3547. [2020-10-26 23:27:06,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3547 states. [2020-10-26 23:27:06,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 4122 transitions. [2020-10-26 23:27:06,671 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 4122 transitions. Word has length 639 [2020-10-26 23:27:06,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:06,672 INFO L481 AbstractCegarLoop]: Abstraction has 3547 states and 4122 transitions. [2020-10-26 23:27:06,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:06,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 4122 transitions. [2020-10-26 23:27:06,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2020-10-26 23:27:06,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:06,680 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-26 23:27:06,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:27:06,680 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:06,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:06,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1429339201, now seen corresponding path program 1 times [2020-10-26 23:27:06,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:06,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502344896] [2020-10-26 23:27:06,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:06,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:06,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:07,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:08,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 677 [2020-10-26 23:27:11,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:27:11,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-26 23:27:11,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:11,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:27:11,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:27:11,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:11,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:11,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:11,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:11,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:27:11,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:11,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:11,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:11,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:11,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:27:11,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:11,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:11,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:12,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:12,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:12,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:12,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:12,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:27:12,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:12,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:12,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:12,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:12,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:12,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:12,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:27:12,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:27:12,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:12,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:12,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:12,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:12,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:27:12,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:12,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 23:27:12,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:27:12,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:12,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:27:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:12,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:12,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:12,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:12,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:12,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:27:12,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:12,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:27:12,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:12,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 664 proven. 72 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2020-10-26 23:27:12,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502344896] [2020-10-26 23:27:12,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:12,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:12,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878182141] [2020-10-26 23:27:12,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:12,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:12,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:12,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:12,688 INFO L87 Difference]: Start difference. First operand 3547 states and 4122 transitions. Second operand 7 states. [2020-10-26 23:27:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:14,946 INFO L93 Difference]: Finished difference Result 8206 states and 9732 transitions. [2020-10-26 23:27:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:27:14,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 657 [2020-10-26 23:27:14,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:14,972 INFO L225 Difference]: With dead ends: 8206 [2020-10-26 23:27:14,973 INFO L226 Difference]: Without dead ends: 5031 [2020-10-26 23:27:14,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:27:14,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2020-10-26 23:27:15,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 4835. [2020-10-26 23:27:15,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4835 states. [2020-10-26 23:27:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 5547 transitions. [2020-10-26 23:27:15,119 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 5547 transitions. Word has length 657 [2020-10-26 23:27:15,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:15,121 INFO L481 AbstractCegarLoop]: Abstraction has 4835 states and 5547 transitions. [2020-10-26 23:27:15,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 5547 transitions. [2020-10-26 23:27:15,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2020-10-26 23:27:15,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:15,131 INFO L422 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:15,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:27:15,132 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:15,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:15,133 INFO L82 PathProgramCache]: Analyzing trace with hash -24964107, now seen corresponding path program 1 times [2020-10-26 23:27:15,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:15,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874905945] [2020-10-26 23:27:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:15,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:15,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:16,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:18,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:18,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 700 [2020-10-26 23:27:18,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:27:18,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3483 [2020-10-26 23:27:18,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:27:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 23:27:18,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:18,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:18,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:18,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:18,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:18,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:18,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:27:18,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:18,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:18,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:18,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:18,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:18,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:18,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:18,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:27:18,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:18,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:18,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:18,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:18,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:19,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:19,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:19,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:19,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:27:19,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:19,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:19,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:19,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:19,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:19,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:19,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:19,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:27:19,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:19,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:19,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:19,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:19,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:19,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:27:19,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:19,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:27:19,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:27:19,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:19,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:27:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:19,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:19,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:19,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:27:19,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:19,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:27:19,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:19,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:27:19,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 765 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-26 23:27:19,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874905945] [2020-10-26 23:27:19,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:19,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:19,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386063664] [2020-10-26 23:27:19,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:19,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:19,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:19,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:19,647 INFO L87 Difference]: Start difference. First operand 4835 states and 5547 transitions. Second operand 7 states. [2020-10-26 23:27:21,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:21,773 INFO L93 Difference]: Finished difference Result 10976 states and 13034 transitions. [2020-10-26 23:27:21,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:27:21,778 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 680 [2020-10-26 23:27:21,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:21,799 INFO L225 Difference]: With dead ends: 10976 [2020-10-26 23:27:21,799 INFO L226 Difference]: Without dead ends: 6513 [2020-10-26 23:27:21,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:27:21,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6513 states. [2020-10-26 23:27:21,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6513 to 6503. [2020-10-26 23:27:21,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6503 states. [2020-10-26 23:27:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6503 states to 6503 states and 7635 transitions. [2020-10-26 23:27:21,944 INFO L78 Accepts]: Start accepts. Automaton has 6503 states and 7635 transitions. Word has length 680 [2020-10-26 23:27:21,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:21,945 INFO L481 AbstractCegarLoop]: Abstraction has 6503 states and 7635 transitions. [2020-10-26 23:27:21,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:21,946 INFO L276 IsEmpty]: Start isEmpty. Operand 6503 states and 7635 transitions. [2020-10-26 23:27:21,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2020-10-26 23:27:21,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:21,956 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:21,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:27:21,957 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:21,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:21,957 INFO L82 PathProgramCache]: Analyzing trace with hash -382671460, now seen corresponding path program 1 times [2020-10-26 23:27:21,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:21,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355757746] [2020-10-26 23:27:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:22,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:24,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:26,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:26,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 834 [2020-10-26 23:27:26,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:27:26,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4666 [2020-10-26 23:27:26,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:26,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:26,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:27:26,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:27:26,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:27,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:27,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:27,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:27,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:27,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:27,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:27:27,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:27,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:27,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:27,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:27,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:27,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:27,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:27,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:27:27,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:27,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:27,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:27,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:27,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:27,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:27,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:27,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:27,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:27:27,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:27,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:27,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:27,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:27,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:27,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:27,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:27:27,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:27,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:27,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:27,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:27,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:27:27,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:27,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:27:27,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:27,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:27,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:27,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:27,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:27,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:27:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:27,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:27,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:27,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:27:27,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:27,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:27:27,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:27:27,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:27,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:27:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:27,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:27,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:27,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:27,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:27,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:27:27,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:27,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:27,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:27,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:27:27,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 748 proven. 2 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-26 23:27:27,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355757746] [2020-10-26 23:27:27,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:27,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:27,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652180151] [2020-10-26 23:27:27,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:27,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:27,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:27,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:27,942 INFO L87 Difference]: Start difference. First operand 6503 states and 7635 transitions. Second operand 7 states. [2020-10-26 23:27:30,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:30,318 INFO L93 Difference]: Finished difference Result 13198 states and 15680 transitions. [2020-10-26 23:27:30,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:27:30,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 812 [2020-10-26 23:27:30,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:30,349 INFO L225 Difference]: With dead ends: 13198 [2020-10-26 23:27:30,350 INFO L226 Difference]: Without dead ends: 6881 [2020-10-26 23:27:30,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:27:30,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6881 states. [2020-10-26 23:27:30,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6881 to 6505. [2020-10-26 23:27:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6505 states. [2020-10-26 23:27:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6505 states to 6505 states and 7598 transitions. [2020-10-26 23:27:30,505 INFO L78 Accepts]: Start accepts. Automaton has 6505 states and 7598 transitions. Word has length 812 [2020-10-26 23:27:30,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:30,507 INFO L481 AbstractCegarLoop]: Abstraction has 6505 states and 7598 transitions. [2020-10-26 23:27:30,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:30,507 INFO L276 IsEmpty]: Start isEmpty. Operand 6505 states and 7598 transitions. [2020-10-26 23:27:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2020-10-26 23:27:30,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:30,523 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:30,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:27:30,523 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:30,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:30,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1131651972, now seen corresponding path program 1 times [2020-10-26 23:27:30,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:30,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281818365] [2020-10-26 23:27:30,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:30,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:31,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:31,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:35,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:35,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 928 [2020-10-26 23:27:35,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:27:35,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 23:27:35,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:27:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:27:35,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-26 23:27:35,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:35,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:35,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:35,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:35,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:35,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:35,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:27:35,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:35,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:35,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:35,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:35,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:35,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:35,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:35,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:35,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:35,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:27:35,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:35,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:35,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:35,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:35,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:35,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:35,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:35,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:36,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:36,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:36,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:27:36,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:36,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:36,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:36,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:36,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:36,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:36,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:36,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:27:36,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:36,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:36,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:36,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:36,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:36,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:36,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:36,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:36,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:27:36,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:36,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:27:36,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:36,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:36,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:27:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:36,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:36,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:36,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:27:36,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:36,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-26 23:27:36,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:36,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:36,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:36,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:27:36,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:36,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:27:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:36,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:36,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:36,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:27:36,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:36,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:27:36,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:27:36,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-26 23:27:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:36,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:36,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:36,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:36,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:36,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:27:36,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:27:36,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:36,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 756 [2020-10-26 23:27:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:36,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:36,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:36,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:36,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:27:36,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:27:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2902 backedges. 1296 proven. 152 refuted. 0 times theorem prover too weak. 1454 trivial. 0 not checked. [2020-10-26 23:27:37,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281818365] [2020-10-26 23:27:37,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:37,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:37,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203649389] [2020-10-26 23:27:37,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:37,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:37,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:37,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:37,140 INFO L87 Difference]: Start difference. First operand 6505 states and 7598 transitions. Second operand 7 states. [2020-10-26 23:27:40,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:40,296 INFO L93 Difference]: Finished difference Result 13757 states and 16155 transitions. [2020-10-26 23:27:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:27:40,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 902 [2020-10-26 23:27:40,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:40,336 INFO L225 Difference]: With dead ends: 13757 [2020-10-26 23:27:40,336 INFO L226 Difference]: Without dead ends: 7624 [2020-10-26 23:27:40,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:27:40,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7624 states. [2020-10-26 23:27:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7624 to 7611. [2020-10-26 23:27:40,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7611 states. [2020-10-26 23:27:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7611 states to 7611 states and 8840 transitions. [2020-10-26 23:27:40,526 INFO L78 Accepts]: Start accepts. Automaton has 7611 states and 8840 transitions. Word has length 902 [2020-10-26 23:27:40,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:40,528 INFO L481 AbstractCegarLoop]: Abstraction has 7611 states and 8840 transitions. [2020-10-26 23:27:40,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:40,528 INFO L276 IsEmpty]: Start isEmpty. Operand 7611 states and 8840 transitions. [2020-10-26 23:27:40,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2020-10-26 23:27:40,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:40,546 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:40,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:27:40,547 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:40,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:40,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1825835024, now seen corresponding path program 1 times [2020-10-26 23:27:40,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:40,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608997966] [2020-10-26 23:27:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:40,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:41,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:41,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:41,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:42,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:43,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:45,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:45,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 946 [2020-10-26 23:27:45,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:27:45,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-26 23:27:45,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:27:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:27:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-26 23:27:45,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:45,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:45,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:45,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:45,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:45,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:45,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:27:45,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:45,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:45,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:45,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:45,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:45,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:45,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:27:45,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:45,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:45,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:45,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:45,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:46,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:46,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:46,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:46,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:46,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:46,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:27:46,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:46,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:46,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:46,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:46,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:46,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:46,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:46,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:27:46,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:46,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:46,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:46,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:46,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:46,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:46,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:46,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:27:46,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:27:46,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:27:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:46,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:27:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:46,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:46,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:46,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:46,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:46,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:27:46,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 23:27:46,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:46,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:46,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:46,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:27:46,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:46,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-10-26 23:27:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:46,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:46,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:46,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:46,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:27:46,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:27:46,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:27:46,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:46,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:27:46,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:46,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-10-26 23:27:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:46,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:46,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:46,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:46,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:27:46,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:27:46,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:46,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 774 [2020-10-26 23:27:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:46,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:46,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:46,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:46,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:46,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-26 23:27:46,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:46,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:46,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:27:46,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:46,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3033 backedges. 1588 proven. 366 refuted. 0 times theorem prover too weak. 1079 trivial. 0 not checked. [2020-10-26 23:27:48,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608997966] [2020-10-26 23:27:48,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:48,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:27:48,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689395170] [2020-10-26 23:27:48,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:27:48,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:48,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:27:48,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:27:48,083 INFO L87 Difference]: Start difference. First operand 7611 states and 8840 transitions. Second operand 8 states. [2020-10-26 23:27:50,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:50,313 INFO L93 Difference]: Finished difference Result 14858 states and 17320 transitions. [2020-10-26 23:27:50,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:27:50,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 920 [2020-10-26 23:27:50,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:50,336 INFO L225 Difference]: With dead ends: 14858 [2020-10-26 23:27:50,337 INFO L226 Difference]: Without dead ends: 7619 [2020-10-26 23:27:50,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:27:50,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7619 states. [2020-10-26 23:27:50,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7619 to 7611. [2020-10-26 23:27:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7611 states. [2020-10-26 23:27:50,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7611 states to 7611 states and 8828 transitions. [2020-10-26 23:27:50,518 INFO L78 Accepts]: Start accepts. Automaton has 7611 states and 8828 transitions. Word has length 920 [2020-10-26 23:27:50,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:50,519 INFO L481 AbstractCegarLoop]: Abstraction has 7611 states and 8828 transitions. [2020-10-26 23:27:50,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:27:50,520 INFO L276 IsEmpty]: Start isEmpty. Operand 7611 states and 8828 transitions. [2020-10-26 23:27:50,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2020-10-26 23:27:50,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:50,534 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:50,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:27:50,534 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:50,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:50,535 INFO L82 PathProgramCache]: Analyzing trace with hash -990070666, now seen corresponding path program 1 times [2020-10-26 23:27:50,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:50,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42005257] [2020-10-26 23:27:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:50,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:55,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:55,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 964 [2020-10-26 23:27:55,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:27:55,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 23:27:55,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:55,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:27:55,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:27:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:27:55,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:55,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:55,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:55,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:55,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:55,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:55,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:27:55,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:55,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:55,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:55,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:55,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:55,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:55,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:55,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:55,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:55,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:27:55,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:55,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:55,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:55,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:55,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:55,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:55,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:27:55,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:55,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:55,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:55,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:56,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:56,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:27:56,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:56,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:56,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:56,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:27:56,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:56,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:27:56,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:56,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:56,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:56,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:56,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:27:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:56,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:27:56,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:27:56,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:56,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:56,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:27:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:56,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:27:56,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:56,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:27:56,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:27:56,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:56,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:27:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:56,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:27:56,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:56,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 23:27:56,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:27:56,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:56,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:27:56,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:56,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:27:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:56,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:56,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:27:56,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-26 23:27:56,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:27:56,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:56,824 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-10-26 23:27:58,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3048 backedges. 1626 proven. 56 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:27:58,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42005257] [2020-10-26 23:27:58,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:58,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:27:58,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927223901] [2020-10-26 23:27:58,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:27:58,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:58,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:27:58,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:27:58,250 INFO L87 Difference]: Start difference. First operand 7611 states and 8828 transitions. Second operand 10 states. [2020-10-26 23:28:00,471 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-10-26 23:28:02,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:02,455 INFO L93 Difference]: Finished difference Result 16409 states and 19434 transitions. [2020-10-26 23:28:02,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:28:02,456 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 938 [2020-10-26 23:28:02,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:02,489 INFO L225 Difference]: With dead ends: 16409 [2020-10-26 23:28:02,489 INFO L226 Difference]: Without dead ends: 9135 [2020-10-26 23:28:02,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:28:02,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9135 states. [2020-10-26 23:28:02,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9135 to 8733. [2020-10-26 23:28:02,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8733 states. [2020-10-26 23:28:02,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8733 states to 8733 states and 10456 transitions. [2020-10-26 23:28:02,731 INFO L78 Accepts]: Start accepts. Automaton has 8733 states and 10456 transitions. Word has length 938 [2020-10-26 23:28:02,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:02,733 INFO L481 AbstractCegarLoop]: Abstraction has 8733 states and 10456 transitions. [2020-10-26 23:28:02,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:28:02,734 INFO L276 IsEmpty]: Start isEmpty. Operand 8733 states and 10456 transitions. [2020-10-26 23:28:02,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2020-10-26 23:28:02,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:02,754 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:02,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:28:02,755 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:02,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:02,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1224294316, now seen corresponding path program 1 times [2020-10-26 23:28:02,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:02,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616135916] [2020-10-26 23:28:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:03,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:03,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:05,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:07,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:07,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:07,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 997 [2020-10-26 23:28:07,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:28:07,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-26 23:28:07,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:28:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:28:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:28:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:08,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:08,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:08,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:08,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:08,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:08,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:28:08,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:08,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:08,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:08,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:08,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:08,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:08,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:28:08,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:08,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:08,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:08,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:08,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:08,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:08,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:28:08,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:08,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:08,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:08,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:08,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:08,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:08,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:08,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:28:08,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:08,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:08,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:08,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:08,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:08,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:08,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:08,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:08,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:08,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:28:08,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:08,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:08,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:08,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:08,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:08,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:28:08,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:08,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:08,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:08,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:08,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:08,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:08,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:08,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:08,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:08,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:08,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:28:08,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:28:08,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:08,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:28:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:08,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:08,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:08,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:28:08,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:08,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-26 23:28:08,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:08,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:28:08,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:08,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:28:08,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:09,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:28:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:09,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:09,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:09,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:09,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:09,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-26 23:28:09,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:09,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3084 backedges. 1662 proven. 56 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:28:10,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616135916] [2020-10-26 23:28:10,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:10,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:28:10,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608247272] [2020-10-26 23:28:10,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:28:10,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:10,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:28:10,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:28:10,273 INFO L87 Difference]: Start difference. First operand 8733 states and 10456 transitions. Second operand 9 states. [2020-10-26 23:28:14,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:14,034 INFO L93 Difference]: Finished difference Result 17529 states and 21043 transitions. [2020-10-26 23:28:14,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:28:14,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 971 [2020-10-26 23:28:14,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:14,063 INFO L225 Difference]: With dead ends: 17529 [2020-10-26 23:28:14,064 INFO L226 Difference]: Without dead ends: 9135 [2020-10-26 23:28:14,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:28:14,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9135 states. [2020-10-26 23:28:14,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9135 to 8733. [2020-10-26 23:28:14,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8733 states. [2020-10-26 23:28:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8733 states to 8733 states and 10450 transitions. [2020-10-26 23:28:14,255 INFO L78 Accepts]: Start accepts. Automaton has 8733 states and 10450 transitions. Word has length 971 [2020-10-26 23:28:14,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:14,256 INFO L481 AbstractCegarLoop]: Abstraction has 8733 states and 10450 transitions. [2020-10-26 23:28:14,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:28:14,257 INFO L276 IsEmpty]: Start isEmpty. Operand 8733 states and 10450 transitions. [2020-10-26 23:28:14,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2020-10-26 23:28:14,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:14,271 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:14,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:28:14,272 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:14,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:14,272 INFO L82 PathProgramCache]: Analyzing trace with hash 310487922, now seen corresponding path program 1 times [2020-10-26 23:28:14,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:14,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570975896] [2020-10-26 23:28:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:14,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:14,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:18,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:19,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:19,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:19,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 998 [2020-10-26 23:28:19,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:19,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-26 23:28:19,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:28:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:28:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:28:19,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:19,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:19,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:19,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:19,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:19,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:19,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:28:19,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:19,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:19,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:19,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:19,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:19,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:19,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:19,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:19,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:19,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:19,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:28:19,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:19,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:19,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:19,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:19,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:19,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:20,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:20,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:20,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:20,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:20,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:28:20,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:20,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:20,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:20,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:20,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:20,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:20,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:20,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:28:20,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:20,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:20,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:20,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:20,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:20,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:20,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:28:20,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:20,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:20,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:20,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:20,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:20,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:20,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:20,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:20,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:20,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:20,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:28:20,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:20,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:20,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:20,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:20,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:20,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:20,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:20,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:20,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:20,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:20,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:28:20,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:20,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:20,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:20,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:28:20,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:20,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:28:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:20,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:20,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:20,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:28:20,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:20,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-26 23:28:20,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:20,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:28:20,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:20,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:28:20,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:20,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:28:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:20,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:20,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:20,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:20,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:20,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:28:20,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:20,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3085 backedges. 1663 proven. 56 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:28:21,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570975896] [2020-10-26 23:28:21,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:21,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:28:21,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134810272] [2020-10-26 23:28:21,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:28:21,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:21,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:28:21,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:28:21,663 INFO L87 Difference]: Start difference. First operand 8733 states and 10450 transitions. Second operand 9 states. [2020-10-26 23:28:25,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:25,093 INFO L93 Difference]: Finished difference Result 17535 states and 21038 transitions. [2020-10-26 23:28:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:28:25,094 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 972 [2020-10-26 23:28:25,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:25,122 INFO L225 Difference]: With dead ends: 17535 [2020-10-26 23:28:25,122 INFO L226 Difference]: Without dead ends: 9133 [2020-10-26 23:28:25,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:28:25,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9133 states. [2020-10-26 23:28:25,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9133 to 8731. [2020-10-26 23:28:25,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8731 states. [2020-10-26 23:28:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8731 states to 8731 states and 10417 transitions. [2020-10-26 23:28:25,342 INFO L78 Accepts]: Start accepts. Automaton has 8731 states and 10417 transitions. Word has length 972 [2020-10-26 23:28:25,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:25,343 INFO L481 AbstractCegarLoop]: Abstraction has 8731 states and 10417 transitions. [2020-10-26 23:28:25,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:28:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 8731 states and 10417 transitions. [2020-10-26 23:28:25,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2020-10-26 23:28:25,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:25,365 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:25,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:28:25,366 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:25,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:25,366 INFO L82 PathProgramCache]: Analyzing trace with hash -354110444, now seen corresponding path program 1 times [2020-10-26 23:28:25,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:25,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642267] [2020-10-26 23:28:25,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:25,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:25,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:28,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:29,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:29,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1029 [2020-10-26 23:28:29,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:28:29,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4097 [2020-10-26 23:28:29,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:29,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:29,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:28:29,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:28:29,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:29,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:29,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:29,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:29,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:29,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:29,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:28:29,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:29,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:29,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:29,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:29,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:29,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:29,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:29,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:29,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:29,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:28:29,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:29,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:29,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:29,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:29,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:29,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:29,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:29,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:29,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:29,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:29,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:28:29,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:29,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:29,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:29,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:29,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:29,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:29,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:29,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:29,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:29,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:29,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:28:29,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:29,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:29,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:29,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:29,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:30,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:30,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:30,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:30,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:30,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:30,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:28:30,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:30,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:30,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:30,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:30,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:30,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:30,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:30,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:28:30,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:30,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:30,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:30,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:30,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:30,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:30,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:30,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:28:30,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:30,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:30,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:30,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:30,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:28:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:30,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:30,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:30,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:28:30,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:30,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-26 23:28:30,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:30,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:30,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:30,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:28:30,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:30,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:28:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:30,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:30,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:30,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:30,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:30,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:28:30,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:30,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:30,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:30,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:30,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3114 backedges. 1085 proven. 2 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2020-10-26 23:28:31,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642267] [2020-10-26 23:28:31,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:31,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:31,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110690047] [2020-10-26 23:28:31,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:31,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:31,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:31,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:31,191 INFO L87 Difference]: Start difference. First operand 8731 states and 10417 transitions. Second operand 7 states. [2020-10-26 23:28:33,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:33,553 INFO L93 Difference]: Finished difference Result 17822 states and 21491 transitions. [2020-10-26 23:28:33,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:28:33,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1003 [2020-10-26 23:28:33,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:33,579 INFO L225 Difference]: With dead ends: 17822 [2020-10-26 23:28:33,579 INFO L226 Difference]: Without dead ends: 9463 [2020-10-26 23:28:33,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:28:33,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9463 states. [2020-10-26 23:28:33,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9463 to 9459. [2020-10-26 23:28:33,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9459 states. [2020-10-26 23:28:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 11149 transitions. [2020-10-26 23:28:33,960 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 11149 transitions. Word has length 1003 [2020-10-26 23:28:33,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:33,961 INFO L481 AbstractCegarLoop]: Abstraction has 9459 states and 11149 transitions. [2020-10-26 23:28:33,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:33,961 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 11149 transitions. [2020-10-26 23:28:33,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2020-10-26 23:28:33,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:33,978 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:33,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:28:33,979 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:33,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:33,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1241682240, now seen corresponding path program 1 times [2020-10-26 23:28:33,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:33,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326830499] [2020-10-26 23:28:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:34,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:39,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:39,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1032 [2020-10-26 23:28:39,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:28:39,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5157 [2020-10-26 23:28:39,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:39,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:28:39,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:28:39,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 23:28:39,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:39,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:39,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:39,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:39,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:39,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:39,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:28:39,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:39,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:39,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:39,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:39,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:39,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:39,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:39,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:39,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:39,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:39,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:28:39,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:39,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:39,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:39,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:39,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:39,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:39,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:39,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:28:39,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:39,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:39,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:39,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:39,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:39,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:39,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:28:39,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:39,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:39,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:39,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:39,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:39,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:39,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:39,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:39,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:39,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:39,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:28:39,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:39,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:39,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:39,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:39,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:39,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:39,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:39,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:39,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:28:39,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:39,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:39,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:39,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:39,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:39,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:39,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:28:39,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:28:39,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:39,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:28:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:39,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:40,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:40,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:28:40,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:40,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-26 23:28:40,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:28:40,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:40,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:28:40,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:40,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:28:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:40,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:40,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:40,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:28:40,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:40,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:28:40,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:40,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:40,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:40,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:28:40,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3129 backedges. 1757 proven. 6 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:28:41,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326830499] [2020-10-26 23:28:41,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:41,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:28:41,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132469038] [2020-10-26 23:28:41,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:28:41,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:41,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:28:41,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:28:41,026 INFO L87 Difference]: Start difference. First operand 9459 states and 11149 transitions. Second operand 10 states. [2020-10-26 23:28:44,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:44,994 INFO L93 Difference]: Finished difference Result 19288 states and 22801 transitions. [2020-10-26 23:28:44,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:28:44,995 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1006 [2020-10-26 23:28:44,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:45,019 INFO L225 Difference]: With dead ends: 19288 [2020-10-26 23:28:45,019 INFO L226 Difference]: Without dead ends: 10201 [2020-10-26 23:28:45,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:28:45,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10201 states. [2020-10-26 23:28:45,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10201 to 9831. [2020-10-26 23:28:45,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9831 states. [2020-10-26 23:28:45,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9831 states to 9831 states and 11522 transitions. [2020-10-26 23:28:45,241 INFO L78 Accepts]: Start accepts. Automaton has 9831 states and 11522 transitions. Word has length 1006 [2020-10-26 23:28:45,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:45,242 INFO L481 AbstractCegarLoop]: Abstraction has 9831 states and 11522 transitions. [2020-10-26 23:28:45,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:28:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 9831 states and 11522 transitions. [2020-10-26 23:28:45,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2020-10-26 23:28:45,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:45,264 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:45,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:28:45,265 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:45,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:45,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1502183376, now seen corresponding path program 1 times [2020-10-26 23:28:45,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:45,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412358419] [2020-10-26 23:28:45,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:45,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:45,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:50,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:50,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1083 [2020-10-26 23:28:50,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 23:28:50,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:28:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:28:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:28:50,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:50,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:50,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:50,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:50,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:50,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:50,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:28:50,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:50,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:50,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:50,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:50,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:50,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:50,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:28:50,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:50,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:50,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:50,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:50,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:50,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:50,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:28:50,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:50,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:50,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:50,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:50,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:50,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:50,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:28:50,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:50,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:50,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:50,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:50,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:50,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:50,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:28:51,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:28:51,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:51,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:28:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:28:51,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:51,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:28:51,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:51,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:51,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:28:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:28:51,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:51,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-26 23:28:51,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:28:51,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:51,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:28:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:51,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:51,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:28:51,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:28:51,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:51,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:28:51,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:51,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-26 23:28:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:51,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:51,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:28:51,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:51,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:51,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:51,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3329 backedges. 1439 proven. 76 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2020-10-26 23:28:52,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412358419] [2020-10-26 23:28:52,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:52,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:28:52,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202333753] [2020-10-26 23:28:52,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:28:52,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:52,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:28:52,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:28:52,617 INFO L87 Difference]: Start difference. First operand 9831 states and 11522 transitions. Second operand 10 states. [2020-10-26 23:28:55,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:55,887 INFO L93 Difference]: Finished difference Result 19521 states and 22940 transitions. [2020-10-26 23:28:55,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:28:55,890 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1057 [2020-10-26 23:28:55,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:55,916 INFO L225 Difference]: With dead ends: 19521 [2020-10-26 23:28:55,916 INFO L226 Difference]: Without dead ends: 10027 [2020-10-26 23:28:55,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2020-10-26 23:28:55,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10027 states. [2020-10-26 23:28:56,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10027 to 10017. [2020-10-26 23:28:56,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10017 states. [2020-10-26 23:28:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10017 states to 10017 states and 11724 transitions. [2020-10-26 23:28:56,152 INFO L78 Accepts]: Start accepts. Automaton has 10017 states and 11724 transitions. Word has length 1057 [2020-10-26 23:28:56,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:56,153 INFO L481 AbstractCegarLoop]: Abstraction has 10017 states and 11724 transitions. [2020-10-26 23:28:56,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:28:56,153 INFO L276 IsEmpty]: Start isEmpty. Operand 10017 states and 11724 transitions. [2020-10-26 23:28:56,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2020-10-26 23:28:56,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:56,172 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:56,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 23:28:56,172 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:56,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:56,173 INFO L82 PathProgramCache]: Analyzing trace with hash -166208453, now seen corresponding path program 1 times [2020-10-26 23:28:56,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:56,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423736267] [2020-10-26 23:28:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1104 [2020-10-26 23:29:01,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:29:01,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-26 23:29:01,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:29:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:29:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:01,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:29:01,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:01,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:01,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:01,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:01,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:01,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:01,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:01,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:01,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:01,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:01,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:29:01,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:01,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:01,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:29:01,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:01,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:01,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:01,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:01,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:29:01,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:01,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:01,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:01,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:01,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:29:01,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:01,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:01,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:01,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:02,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:02,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:29:02,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:02,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:29:02,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:29:02,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:02,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:29:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:02,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:02,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:02,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:29:02,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:29:02,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:29:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:02,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2020-10-26 23:29:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:02,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:02,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:02,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:02,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:02,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:29:02,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:29:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:02,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3761 backedges. 1115 proven. 72 refuted. 0 times theorem prover too weak. 2574 trivial. 0 not checked. [2020-10-26 23:29:02,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423736267] [2020-10-26 23:29:02,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:02,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:02,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656982233] [2020-10-26 23:29:02,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:02,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:02,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:02,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:02,907 INFO L87 Difference]: Start difference. First operand 10017 states and 11724 transitions. Second operand 7 states. [2020-10-26 23:29:05,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:05,191 INFO L93 Difference]: Finished difference Result 19666 states and 23075 transitions. [2020-10-26 23:29:05,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:29:05,192 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1076 [2020-10-26 23:29:05,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:05,211 INFO L225 Difference]: With dead ends: 19666 [2020-10-26 23:29:05,212 INFO L226 Difference]: Without dead ends: 10021 [2020-10-26 23:29:05,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:29:05,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10021 states. [2020-10-26 23:29:05,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10021 to 10017. [2020-10-26 23:29:05,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10017 states. [2020-10-26 23:29:05,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10017 states to 10017 states and 11628 transitions. [2020-10-26 23:29:05,438 INFO L78 Accepts]: Start accepts. Automaton has 10017 states and 11628 transitions. Word has length 1076 [2020-10-26 23:29:05,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:05,439 INFO L481 AbstractCegarLoop]: Abstraction has 10017 states and 11628 transitions. [2020-10-26 23:29:05,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:05,439 INFO L276 IsEmpty]: Start isEmpty. Operand 10017 states and 11628 transitions. [2020-10-26 23:29:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1122 [2020-10-26 23:29:05,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:05,459 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:05,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 23:29:05,459 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:05,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:05,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1394018875, now seen corresponding path program 1 times [2020-10-26 23:29:05,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:05,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417663713] [2020-10-26 23:29:05,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:05,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:05,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:10,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:10,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1149 [2020-10-26 23:29:10,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:29:10,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 23:29:10,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:29:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:29:10,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 387 [2020-10-26 23:29:10,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:10,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:10,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:10,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:10,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:10,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:10,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:29:10,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:10,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:10,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:10,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:10,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:10,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:10,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:10,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:10,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:29:10,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:10,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:10,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:10,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:10,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:10,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:10,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:10,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:10,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:10,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:10,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:10,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:10,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:10,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:10,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:10,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:10,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:10,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:29:10,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:10,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:10,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:10,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:10,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:10,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:10,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:10,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:29:10,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:10,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:10,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:11,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:11,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:11,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:11,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:29:11,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:11,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:11,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:11,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:11,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:11,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:11,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:29:11,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:29:11,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:11,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:11,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking...