/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/reducercommutativity/max05-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:27:50,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:27:50,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:27:50,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:27:50,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:27:50,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:27:50,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:27:50,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:27:50,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:27:50,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:27:50,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:27:50,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:27:50,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:27:50,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:27:50,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:27:50,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:27:50,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:27:50,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:27:50,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:27:50,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:27:50,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:27:50,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:27:50,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:27:50,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:27:50,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:27:50,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:27:50,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:27:50,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:27:50,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:27:50,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:27:50,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:27:50,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:27:50,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:27:50,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:27:50,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:27:50,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:27:50,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:27:50,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:27:50,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:27:50,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:27:50,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:27:50,841 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 [2020-10-28 17:27:50,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:27:50,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:27:50,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:27:50,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:27:50,891 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:27:50,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:27:50,891 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:27:50,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:27:50,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:27:50,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:27:50,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:27:50,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:27:50,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:27:50,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:27:50,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:27:50,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:27:50,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:27:50,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:27:50,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:27:50,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:27:50,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:27:50,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:27:50,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:27:50,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:27:50,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:27:50,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:27:50,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:27:50,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:27:50,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:27:50,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:27:51,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:27:51,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:27:51,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:27:51,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:27:51,321 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:27:51,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max05-1.i [2020-10-28 17:27:51,400 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/256639768/8e80a4db02274919b1cdda748700ce9b/FLAG699ddc2d1 [2020-10-28 17:27:51,965 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:27:51,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max05-1.i [2020-10-28 17:27:51,974 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/256639768/8e80a4db02274919b1cdda748700ce9b/FLAG699ddc2d1 [2020-10-28 17:27:52,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/256639768/8e80a4db02274919b1cdda748700ce9b [2020-10-28 17:27:52,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:27:52,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:27:52,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:27:52,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:27:52,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:27:52,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:27:52" (1/1) ... [2020-10-28 17:27:52,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e90d70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:52, skipping insertion in model container [2020-10-28 17:27:52,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:27:52" (1/1) ... [2020-10-28 17:27:52,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:27:52,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:27:52,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:27:52,672 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:27:52,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:27:52,746 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:27:52,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:52 WrapperNode [2020-10-28 17:27:52,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:27:52,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:27:52,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:27:52,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:27:52,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:52" (1/1) ... [2020-10-28 17:27:52,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:52" (1/1) ... [2020-10-28 17:27:52,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:52" (1/1) ... [2020-10-28 17:27:52,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:52" (1/1) ... [2020-10-28 17:27:52,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:52" (1/1) ... [2020-10-28 17:27:52,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:52" (1/1) ... [2020-10-28 17:27:52,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:52" (1/1) ... [2020-10-28 17:27:52,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:27:52,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:27:52,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:27:52,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:27:52,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:52" (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 [2020-10-28 17:27:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:27:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:27:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:27:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-28 17:27:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:27:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:27:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:27:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 17:27:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 17:27:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:27:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:27:52,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:27:52,881 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-28 17:27:52,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:27:52,881 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:27:52,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:27:52,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:27:52,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:27:52,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:27:52,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:27:53,295 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:27:53,296 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 17:27:53,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:27:53 BoogieIcfgContainer [2020-10-28 17:27:53,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:27:53,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:27:53,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:27:53,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:27:53,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:27:52" (1/3) ... [2020-10-28 17:27:53,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c3d3a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:27:53, skipping insertion in model container [2020-10-28 17:27:53,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:52" (2/3) ... [2020-10-28 17:27:53,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c3d3a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:27:53, skipping insertion in model container [2020-10-28 17:27:53,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:27:53" (3/3) ... [2020-10-28 17:27:53,324 INFO L111 eAbstractionObserver]: Analyzing ICFG max05-1.i [2020-10-28 17:27:53,335 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:27:53,340 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:27:53,353 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:27:53,380 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:27:53,380 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:27:53,380 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:27:53,380 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:27:53,380 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:27:53,380 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:27:53,380 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:27:53,381 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:27:53,398 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-28 17:27:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:27:53,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:27:53,405 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:27:53,405 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:27:53,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:27:53,412 INFO L82 PathProgramCache]: Analyzing trace with hash -122162658, now seen corresponding path program 1 times [2020-10-28 17:27:53,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:27:53,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281890492] [2020-10-28 17:27:53,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:27:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:53,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:53,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:53,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:53,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:54,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:55,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:55,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:27:55,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:27:55,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1627 [2020-10-28 17:27:55,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:55,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:27:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:55,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:27:55,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:27:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:55,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:55,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:55,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:55,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:55,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:27:55,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:55,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:55,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:55,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:55,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:55,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:55,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:27:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:55,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:55,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:55,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:55,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:55,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:27:55,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:27:55,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:55,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:55,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:55,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:55,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:55,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:55,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 17:27:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:55,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:55,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:55,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:55,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:27:55,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:27:55,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:55,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:55,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:55,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:27:55,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:55,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:55,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:27:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:55,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:55,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:55,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:55,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:55,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:27:55,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:55,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:55,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:55,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:27:55,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:55,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:55,359 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 17:27:55,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281890492] [2020-10-28 17:27:55,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:27:55,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 17:27:55,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146552384] [2020-10-28 17:27:55,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 17:27:55,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:27:55,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 17:27:55,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:27:55,401 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-28 17:27:55,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:27:55,548 INFO L93 Difference]: Finished difference Result 64 states and 86 transitions. [2020-10-28 17:27:55,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 17:27:55,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-28 17:27:55,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:27:55,558 INFO L225 Difference]: With dead ends: 64 [2020-10-28 17:27:55,559 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 17:27:55,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:27:55,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 17:27:55,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-28 17:27:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 17:27:55,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-28 17:27:55,621 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 34 [2020-10-28 17:27:55,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:27:55,621 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-28 17:27:55,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 17:27:55,622 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-28 17:27:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:27:55,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:27:55,624 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:27:55,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:27:55,624 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:27:55,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:27:55,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1084102031, now seen corresponding path program 1 times [2020-10-28 17:27:55,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:27:55,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638762016] [2020-10-28 17:27:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:27:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:55,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:55,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:55,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:55,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:55,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:55,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:27:57,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:27:57,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1448 [2020-10-28 17:27:57,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:27:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:27:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:27:57,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:57,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:27:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:57,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:57,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:27:57,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:57,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:57,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:57,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:57,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:27:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:57,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:27:57,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:27:57,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:57,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:27:57,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:57,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:57,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 17:27:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:57,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:27:57,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:27:57,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:27:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:57,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:27:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:57,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:27:57,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:27:57,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:57,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:27:57,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:57,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:27:57,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638762016] [2020-10-28 17:27:57,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:27:57,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:27:57,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316311046] [2020-10-28 17:27:57,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:27:57,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:27:57,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:27:57,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:27:57,214 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 4 states. [2020-10-28 17:27:57,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:27:57,355 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-28 17:27:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:27:57,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-28 17:27:57,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:27:57,357 INFO L225 Difference]: With dead ends: 54 [2020-10-28 17:27:57,357 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 17:27:57,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:27:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 17:27:57,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 17:27:57,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 17:27:57,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-28 17:27:57,368 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 34 [2020-10-28 17:27:57,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:27:57,368 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-28 17:27:57,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:27:57,369 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-28 17:27:57,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 17:27:57,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:27:57,370 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:27:57,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:27:57,371 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:27:57,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:27:57,371 INFO L82 PathProgramCache]: Analyzing trace with hash -839912781, now seen corresponding path program 1 times [2020-10-28 17:27:57,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:27:57,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910481234] [2020-10-28 17:27:57,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:27:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:59,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:27:59,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:27:59,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1978 [2020-10-28 17:27:59,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:59,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:27:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:27:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:27:59,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:59,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:27:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:59,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:59,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:59,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:59,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:27:59,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:59,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:59,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:59,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:59,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:59,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:59,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:27:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:59,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:59,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:59,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:27:59,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:27:59,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:59,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:59,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:59,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:27:59,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:59,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:59,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:27:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:59,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:59,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:59,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:27:59,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:27:59,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:59,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:27:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:59,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:59,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:27:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:59,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:59,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:59,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:27:59,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:27:59,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:59,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:27:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:59,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:27:59,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910481234] [2020-10-28 17:27:59,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:27:59,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:27:59,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640278020] [2020-10-28 17:27:59,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:27:59,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:27:59,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:27:59,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:27:59,503 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-10-28 17:27:59,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:27:59,720 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-28 17:27:59,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:27:59,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-28 17:27:59,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:27:59,724 INFO L225 Difference]: With dead ends: 56 [2020-10-28 17:27:59,724 INFO L226 Difference]: Without dead ends: 34 [2020-10-28 17:27:59,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:27:59,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-28 17:27:59,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-28 17:27:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 17:27:59,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-28 17:27:59,742 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 36 [2020-10-28 17:27:59,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:27:59,742 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-28 17:27:59,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:27:59,743 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-28 17:27:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 17:27:59,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:27:59,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:27:59,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:27:59,745 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:27:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:27:59,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1897722485, now seen corresponding path program 2 times [2020-10-28 17:27:59,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:27:59,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614374926] [2020-10-28 17:27:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:27:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:59,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:00,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:02,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:28:02,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:02,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2771 [2020-10-28 17:28:02,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:02,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:02,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:02,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:28:02,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:28:02,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:02,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:02,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:02,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:02,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:02,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:28:02,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:02,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:02,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:02,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:02,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:02,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:02,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:28:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:02,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:02,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:02,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:02,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:28:02,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:02,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:02,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:02,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:02,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:02,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:02,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 17:28:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:02,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:02,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:02,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:02,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:28:02,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:02,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:02,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:02,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:02,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:02,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:02,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:28:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:02,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:02,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:02,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:02,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:28:02,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:02,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:28:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:28:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:28:02,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614374926] [2020-10-28 17:28:02,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:28:02,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:28:02,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176998937] [2020-10-28 17:28:02,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:28:02,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:02,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:28:02,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:28:02,637 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 4 states. [2020-10-28 17:28:02,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:02,790 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2020-10-28 17:28:02,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:28:02,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-28 17:28:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:02,792 INFO L225 Difference]: With dead ends: 58 [2020-10-28 17:28:02,792 INFO L226 Difference]: Without dead ends: 37 [2020-10-28 17:28:02,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:28:02,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-28 17:28:02,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-10-28 17:28:02,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 17:28:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-28 17:28:02,800 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 38 [2020-10-28 17:28:02,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:02,800 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-28 17:28:02,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:28:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-28 17:28:02,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 17:28:02,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:02,802 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:28:02,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:28:02,803 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:02,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:02,803 INFO L82 PathProgramCache]: Analyzing trace with hash -467101424, now seen corresponding path program 1 times [2020-10-28 17:28:02,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:02,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112118492] [2020-10-28 17:28:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:02,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:03,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:07,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:07,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 17:28:07,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:28:07,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:28:07,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:07,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:28:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:28:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:28:07,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:07,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:07,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:07,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:07,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:07,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:28:07,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:07,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:07,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:07,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:28:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:07,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:07,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:07,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:28:07,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:07,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:28:07,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:07,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:07,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 17:28:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:07,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:07,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:07,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:28:07,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:07,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:28:07,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:07,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:07,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:28:07,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:28:07,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:28:07,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:07,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:28:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:07,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:08,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:08,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:08,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:28:08,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:08,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 17:28:08,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:08,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:08,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-28 17:28:08,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112118492] [2020-10-28 17:28:08,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:08,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:28:08,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722570003] [2020-10-28 17:28:08,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:28:08,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:08,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:28:08,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:28:08,031 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2020-10-28 17:28:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:08,283 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2020-10-28 17:28:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:28:08,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-28 17:28:08,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:08,286 INFO L225 Difference]: With dead ends: 63 [2020-10-28 17:28:08,286 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 17:28:08,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:28:08,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 17:28:08,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-10-28 17:28:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 17:28:08,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-28 17:28:08,301 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 50 [2020-10-28 17:28:08,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:08,301 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-28 17:28:08,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:28:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-28 17:28:08,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 17:28:08,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:08,304 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:28:08,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:28:08,304 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:08,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:08,305 INFO L82 PathProgramCache]: Analyzing trace with hash -26988757, now seen corresponding path program 2 times [2020-10-28 17:28:08,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:08,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197402680] [2020-10-28 17:28:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:08,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:08,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:08,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:08,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:09,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:13,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 17:28:13,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:13,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 17:28:13,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:13,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:13,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:13,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 17:28:13,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:28:13,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:13,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:13,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:13,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:13,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:28:13,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:13,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:13,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:13,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:13,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:13,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:13,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:28:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:13,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:13,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:13,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:13,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 17:28:13,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:13,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:13,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:13,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:13,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 17:28:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:13,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:13,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:13,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:13,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 17:28:13,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:13,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:13,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:13,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 17:28:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:13,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:13,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:13,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:13,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:28:13,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:13,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:13,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:13,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:28:13,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:13,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-28 17:28:13,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197402680] [2020-10-28 17:28:13,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:28:13,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:28:13,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845799334] [2020-10-28 17:28:13,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:28:13,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:13,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:28:13,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:28:13,536 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 4 states. [2020-10-28 17:28:13,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:13,694 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-10-28 17:28:13,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:28:13,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-28 17:28:13,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:13,697 INFO L225 Difference]: With dead ends: 61 [2020-10-28 17:28:13,697 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 17:28:13,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:28:13,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 17:28:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-28 17:28:13,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 17:28:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-28 17:28:13,712 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 62 [2020-10-28 17:28:13,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:13,713 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-28 17:28:13,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:28:13,714 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-28 17:28:13,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 17:28:13,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:13,716 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:28:13,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:28:13,717 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:13,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1182221175, now seen corresponding path program 1 times [2020-10-28 17:28:13,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:13,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368930997] [2020-10-28 17:28:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:13,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:13,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:18,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:18,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 17:28:18,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:28:18,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:28:18,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:18,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:28:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 17:28:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:28:18,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:18,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:18,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:18,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:18,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:18,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:18,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:28:18,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:18,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:18,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:18,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:28:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:18,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:18,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:18,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:18,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:18,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:28:18,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:18,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:18,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:28:18,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:28:18,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:28:18,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:18,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 17:28:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:18,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:18,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:18,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:18,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:18,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:28:18,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:18,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:28:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:18,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:18,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 17:28:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:18,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:18,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:18,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:18,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:18,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:18,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:28:18,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:18,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:18,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:28:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:18,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-28 17:28:18,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368930997] [2020-10-28 17:28:18,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:18,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:28:18,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579867406] [2020-10-28 17:28:18,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:28:18,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:18,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:28:18,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:28:18,964 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 6 states. [2020-10-28 17:28:19,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:19,304 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2020-10-28 17:28:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:28:19,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-28 17:28:19,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:19,306 INFO L225 Difference]: With dead ends: 73 [2020-10-28 17:28:19,306 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 17:28:19,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:28:19,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 17:28:19,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-10-28 17:28:19,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 17:28:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-28 17:28:19,314 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 64 [2020-10-28 17:28:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:19,314 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-28 17:28:19,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:28:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-28 17:28:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 17:28:19,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:19,316 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:28:19,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:28:19,316 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:19,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:19,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1019671772, now seen corresponding path program 2 times [2020-10-28 17:28:19,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:19,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204049233] [2020-10-28 17:28:19,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:19,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:19,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:19,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:19,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:19,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:22,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:24,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:24,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 17:28:24,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:24,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 17:28:24,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:24,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:28:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:28:24,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:24,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:24,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:24,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:24,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:24,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:24,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:28:24,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:24,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:24,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:24,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:24,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:24,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:24,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:28:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:24,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:24,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:24,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:24,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:24,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:24,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 17:28:24,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:24,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:24,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:24,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:24,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:24,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:24,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 17:28:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:24,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:24,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:24,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:24,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:24,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:24,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 17:28:24,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:24,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:24,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:24,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:24,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:24,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:24,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:28:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:24,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:24,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:24,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:24,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:24,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:24,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 17:28:24,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:24,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:24,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:24,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:24,570 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-28 17:28:24,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204049233] [2020-10-28 17:28:24,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:24,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:28:24,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7383416] [2020-10-28 17:28:24,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:28:24,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:24,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:28:24,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:28:24,572 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 6 states. [2020-10-28 17:28:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:24,678 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2020-10-28 17:28:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:28:24,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-28 17:28:24,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:24,679 INFO L225 Difference]: With dead ends: 78 [2020-10-28 17:28:24,679 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 17:28:24,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:28:24,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 17:28:24,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 17:28:24,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 17:28:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-28 17:28:24,691 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 76 [2020-10-28 17:28:24,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:24,691 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-28 17:28:24,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:28:24,691 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-28 17:28:24,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 17:28:24,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:24,696 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:28:24,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:28:24,696 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:24,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:24,697 INFO L82 PathProgramCache]: Analyzing trace with hash -426008346, now seen corresponding path program 3 times [2020-10-28 17:28:24,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:24,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811396879] [2020-10-28 17:28:24,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:24,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:24,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:24,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:29,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:29,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 17:28:29,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:29,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 17:28:29,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:29,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:28:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 17:28:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:28:29,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:28:29,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:29,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:29,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:29,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:29,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:29,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:29,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:29,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:29,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:29,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:28:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:29,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:29,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:29,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:29,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:29,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:29,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 17:28:29,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:29,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:29,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:29,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:29,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:29,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:29,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:28:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:29,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:29,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:29,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:29,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:29,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:29,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 17:28:29,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:29,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:29,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:29,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:29,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:29,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:29,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:28:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:29,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:29,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:29,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:29,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:29,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:29,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:28:29,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:29,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:29,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-28 17:28:29,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811396879] [2020-10-28 17:28:29,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:29,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:28:29,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644458007] [2020-10-28 17:28:29,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:28:29,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:29,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:28:29,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:28:29,960 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-10-28 17:28:30,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:30,081 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-10-28 17:28:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:28:30,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-28 17:28:30,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:30,083 INFO L225 Difference]: With dead ends: 73 [2020-10-28 17:28:30,083 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 17:28:30,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:28:30,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 17:28:30,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-28 17:28:30,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 17:28:30,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-28 17:28:30,097 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 78 [2020-10-28 17:28:30,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:30,098 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-28 17:28:30,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:28:30,103 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-28 17:28:30,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 17:28:30,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:30,105 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:28:30,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:28:30,105 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:30,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:30,108 INFO L82 PathProgramCache]: Analyzing trace with hash -643125436, now seen corresponding path program 4 times [2020-10-28 17:28:30,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:30,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033639335] [2020-10-28 17:28:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:30,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:30,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:30,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:30,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:30,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:34,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:35,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:35,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 17:28:35,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:28:35,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 17:28:35,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:35,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:35,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:28:35,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:28:35,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:28:35,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:35,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:35,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:35,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:35,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:35,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:35,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:35,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:35,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:35,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:35,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:28:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:35,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:35,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:35,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:35,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:28:35,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:35,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:28:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:28:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:28:35,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:35,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:28:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:35,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:35,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:35,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:35,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:35,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:35,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 17:28:35,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:35,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:35,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:35,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:28:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:35,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:35,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:35,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:35,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:35,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:35,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 17:28:35,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:35,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:35,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:35,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-28 17:28:35,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033639335] [2020-10-28 17:28:35,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:35,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:28:35,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350023349] [2020-10-28 17:28:35,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:28:35,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:35,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:28:35,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:28:35,354 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 7 states. [2020-10-28 17:28:35,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:35,594 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2020-10-28 17:28:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:28:35,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-28 17:28:35,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:35,596 INFO L225 Difference]: With dead ends: 87 [2020-10-28 17:28:35,596 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 17:28:35,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:28:35,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 17:28:35,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-28 17:28:35,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 17:28:35,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-10-28 17:28:35,603 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 80 [2020-10-28 17:28:35,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:35,604 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-10-28 17:28:35,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:28:35,604 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-10-28 17:28:35,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 17:28:35,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:35,605 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:28:35,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:28:35,605 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:35,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:35,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1184767137, now seen corresponding path program 5 times [2020-10-28 17:28:35,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:35,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062058712] [2020-10-28 17:28:35,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:35,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:35,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:35,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:35,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:35,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:36,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:40,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:40,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 17:28:40,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:28:40,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:28:40,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:40,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:28:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:28:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:28:40,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:40,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:40,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:40,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:40,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:40,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:40,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:40,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:40,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:40,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:40,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:40,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:28:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:40,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:40,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:40,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:28:40,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 17:28:40,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:40,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:28:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:28:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:28:40,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:40,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 17:28:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:40,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:40,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:40,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:40,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:28:40,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:40,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 17:28:40,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:40,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:28:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:40,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:40,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:28:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:40,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:40,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:40,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:40,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:28:40,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:40,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 17:28:40,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:40,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:40,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:28:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:40,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-28 17:28:40,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062058712] [2020-10-28 17:28:40,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:40,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:28:40,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656257599] [2020-10-28 17:28:40,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:28:40,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:40,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:28:40,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:28:40,872 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 8 states. [2020-10-28 17:28:41,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:41,149 INFO L93 Difference]: Finished difference Result 92 states and 111 transitions. [2020-10-28 17:28:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:28:41,150 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-10-28 17:28:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:41,151 INFO L225 Difference]: With dead ends: 92 [2020-10-28 17:28:41,151 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 17:28:41,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:28:41,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 17:28:41,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-28 17:28:41,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 17:28:41,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-28 17:28:41,167 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 92 [2020-10-28 17:28:41,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:41,168 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-28 17:28:41,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:28:41,168 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-28 17:28:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 17:28:41,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:41,171 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:28:41,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:28:41,172 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:41,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:41,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1710311162, now seen corresponding path program 6 times [2020-10-28 17:28:41,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:41,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44695891] [2020-10-28 17:28:41,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:41,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:41,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:41,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:41,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:42,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:42,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:44,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:46,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:46,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:46,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 17:28:46,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 17:28:46,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 17:28:46,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:46,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:46,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:28:46,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:46,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:28:46,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:46,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:46,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:46,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:46,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:46,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:46,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:28:46,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:46,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:46,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:46,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:46,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:28:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:46,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:46,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:46,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:46,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:46,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:28:46,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:46,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:46,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:46,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:46,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:46,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:46,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:28:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:46,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:46,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:46,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:46,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:46,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:28:46,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:46,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:46,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:46,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:28:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:46,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:46,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:46,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:46,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:46,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:28:46,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:46,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:46,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2020-10-28 17:28:46,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44695891] [2020-10-28 17:28:46,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:46,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:28:46,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847952752] [2020-10-28 17:28:46,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:28:46,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:46,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:28:46,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:28:46,384 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 7 states. [2020-10-28 17:28:46,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:46,492 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2020-10-28 17:28:46,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:28:46,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-28 17:28:46,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:46,493 INFO L225 Difference]: With dead ends: 100 [2020-10-28 17:28:46,494 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 17:28:46,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:28:46,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 17:28:46,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-28 17:28:46,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 17:28:46,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-28 17:28:46,501 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 104 [2020-10-28 17:28:46,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:46,501 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-28 17:28:46,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:28:46,501 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-28 17:28:46,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 17:28:46,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:46,503 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:28:46,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:28:46,503 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:46,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:46,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1356694972, now seen corresponding path program 7 times [2020-10-28 17:28:46,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:46,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866260025] [2020-10-28 17:28:46,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:46,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:46,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:46,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:46,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:46,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:50,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:50,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:51,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:51,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 17:28:51,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 17:28:51,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:28:51,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:51,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:28:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:28:51,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:51,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:51,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:51,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:51,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:51,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:51,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:51,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:51,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:51,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:51,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:51,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:51,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:51,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 17:28:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:51,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:51,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:51,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:51,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:28:51,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:51,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:51,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:51,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:51,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:51,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:28:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:51,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:51,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:51,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:51,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:51,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:28:51,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:51,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:51,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:51,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:51,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:51,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:28:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:51,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:51,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:51,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:51,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:51,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:28:51,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:51,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:51,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:51,687 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2020-10-28 17:28:51,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866260025] [2020-10-28 17:28:51,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:51,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:28:51,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101060159] [2020-10-28 17:28:51,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:28:51,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:51,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:28:51,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:28:51,690 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 8 states. [2020-10-28 17:28:51,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:51,873 INFO L93 Difference]: Finished difference Result 101 states and 119 transitions. [2020-10-28 17:28:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:28:51,874 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-28 17:28:51,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:51,875 INFO L225 Difference]: With dead ends: 101 [2020-10-28 17:28:51,875 INFO L226 Difference]: Without dead ends: 59 [2020-10-28 17:28:51,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:28:51,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-28 17:28:51,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-28 17:28:51,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 17:28:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-10-28 17:28:51,895 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 106 [2020-10-28 17:28:51,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:51,896 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-10-28 17:28:51,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:28:51,898 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-10-28 17:28:51,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 17:28:51,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:51,904 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:28:51,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:28:51,904 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:51,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:51,905 INFO L82 PathProgramCache]: Analyzing trace with hash 833952766, now seen corresponding path program 8 times [2020-10-28 17:28:51,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:51,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705518793] [2020-10-28 17:28:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:51,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:52,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:52,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:52,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:52,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:55,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:56,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:56,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 17:28:56,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:28:56,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 17:28:56,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:56,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:28:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 17:28:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:28:56,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:57,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:57,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:57,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:57,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:57,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:57,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:28:57,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:57,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:57,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:57,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:57,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:57,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:57,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:28:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:57,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:57,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:57,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:57,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:57,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:28:57,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:57,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:57,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:57,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 17:28:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:57,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:57,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:57,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:57,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:57,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:28:57,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:57,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:57,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:57,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:28:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:57,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:57,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:57,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:57,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:57,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:28:57,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:57,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:57,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:57,076 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2020-10-28 17:28:57,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705518793] [2020-10-28 17:28:57,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:57,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:28:57,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310287641] [2020-10-28 17:28:57,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:28:57,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:57,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:28:57,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:28:57,078 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 6 states. [2020-10-28 17:28:57,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:57,184 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2020-10-28 17:28:57,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:28:57,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-28 17:28:57,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:57,186 INFO L225 Difference]: With dead ends: 95 [2020-10-28 17:28:57,186 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 17:28:57,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:28:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 17:28:57,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-28 17:28:57,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 17:28:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2020-10-28 17:28:57,198 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 108 [2020-10-28 17:28:57,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:57,198 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2020-10-28 17:28:57,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:28:57,198 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2020-10-28 17:28:57,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 17:28:57,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:57,200 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:28:57,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:28:57,201 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:57,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:57,203 INFO L82 PathProgramCache]: Analyzing trace with hash -909497380, now seen corresponding path program 9 times [2020-10-28 17:28:57,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:57,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510311648] [2020-10-28 17:28:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:57,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:57,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:57,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:59,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:59,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:59,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:01,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:02,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:02,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 17:29:02,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 17:29:02,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 17:29:02,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:02,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:29:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 17:29:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:29:02,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:02,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:02,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:02,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:02,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:02,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:02,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:02,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:02,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:02,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:02,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:02,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:02,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:02,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:29:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:02,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:02,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:02,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:02,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:02,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:29:02,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:02,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:02,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:02,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 17:29:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:02,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:02,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:02,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:02,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:02,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:29:02,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:02,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:02,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:02,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:29:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:02,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:02,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:02,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:02,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:02,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:29:02,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:02,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:29:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:02,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2020-10-28 17:29:02,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510311648] [2020-10-28 17:29:02,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:02,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:29:02,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750328650] [2020-10-28 17:29:02,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:29:02,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:02,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:29:02,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:29:02,362 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 7 states. [2020-10-28 17:29:02,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:02,464 INFO L93 Difference]: Finished difference Result 96 states and 111 transitions. [2020-10-28 17:29:02,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:29:02,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-28 17:29:02,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:02,466 INFO L225 Difference]: With dead ends: 96 [2020-10-28 17:29:02,466 INFO L226 Difference]: Without dead ends: 63 [2020-10-28 17:29:02,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:29:02,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-28 17:29:02,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-28 17:29:02,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 17:29:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-10-28 17:29:02,473 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 110 [2020-10-28 17:29:02,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:02,474 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-10-28 17:29:02,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:29:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-10-28 17:29:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 17:29:02,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:02,475 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:02,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:29:02,475 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:02,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:02,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1327842246, now seen corresponding path program 10 times [2020-10-28 17:29:02,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:02,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59391316] [2020-10-28 17:29:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:02,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:02,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:02,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:03,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:03,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:06,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:06,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:07,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:07,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 17:29:07,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 17:29:07,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 17:29:07,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:07,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:29:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 17:29:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:29:07,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:07,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:07,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:07,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:07,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:07,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:07,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:29:07,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:07,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:07,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:07,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:07,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:07,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:07,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:29:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:07,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:07,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:07,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:07,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:07,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 17:29:07,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:07,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:29:07,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:07,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:29:07,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:07,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 17:29:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:07,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:08,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:08,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:08,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:08,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 17:29:08,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:08,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:29:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:08,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 17:29:08,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:08,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:29:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:08,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:08,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:08,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:08,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:08,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:29:08,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:08,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:08,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:08,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:29:08,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:08,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 1 proven. 329 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2020-10-28 17:29:08,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59391316] [2020-10-28 17:29:08,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:08,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:29:08,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567249129] [2020-10-28 17:29:08,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:29:08,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:08,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:29:08,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:29:08,420 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 16 states. [2020-10-28 17:29:09,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:09,304 INFO L93 Difference]: Finished difference Result 138 states and 162 transitions. [2020-10-28 17:29:09,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:29:09,304 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 112 [2020-10-28 17:29:09,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:09,305 INFO L225 Difference]: With dead ends: 138 [2020-10-28 17:29:09,306 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 17:29:09,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:29:09,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 17:29:09,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2020-10-28 17:29:09,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 17:29:09,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 104 transitions. [2020-10-28 17:29:09,318 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 104 transitions. Word has length 112 [2020-10-28 17:29:09,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:09,318 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 104 transitions. [2020-10-28 17:29:09,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:29:09,318 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 104 transitions. [2020-10-28 17:29:09,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 17:29:09,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:09,320 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:09,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:29:09,320 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:09,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:09,321 INFO L82 PathProgramCache]: Analyzing trace with hash 633732412, now seen corresponding path program 1 times [2020-10-28 17:29:09,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:09,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702746134] [2020-10-28 17:29:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:09,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:09,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:10,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:10,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:13,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:14,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 17:29:14,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 17:29:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 17:29:14,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:14,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 17:29:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 17:29:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 17:29:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:14,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:14,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:14,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:14,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:14,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:29:14,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:14,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:14,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:14,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:29:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:14,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:15,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:15,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:15,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:29:15,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-28 17:29:15,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:15,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:15,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 17:29:15,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:15,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:29:15,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:15,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 17:29:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:16,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:16,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:16,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:16,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:16,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:16,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:16,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:29:16,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-28 17:29:16,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:16,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:29:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 17:29:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:16,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:29:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:16,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:16,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:16,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:16,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:16,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:16,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:29:16,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-28 17:29:16,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:16,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:29:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 17:29:16,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 127 proven. 297 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-28 17:29:17,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702746134] [2020-10-28 17:29:17,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:17,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-28 17:29:17,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357876862] [2020-10-28 17:29:17,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-28 17:29:17,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:17,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-28 17:29:17,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2020-10-28 17:29:17,139 INFO L87 Difference]: Start difference. First operand 87 states and 104 transitions. Second operand 32 states. [2020-10-28 17:29:18,295 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-28 17:29:18,606 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-10-28 17:29:18,770 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2020-10-28 17:29:18,954 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-10-28 17:29:19,420 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-28 17:29:19,743 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-28 17:29:20,368 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-10-28 17:29:20,535 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-28 17:29:20,915 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-28 17:29:21,125 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-28 17:29:21,321 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-10-28 17:29:21,515 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-10-28 17:29:21,679 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-28 17:29:21,844 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-28 17:29:22,140 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-28 17:29:22,655 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-28 17:29:23,558 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-28 17:29:23,765 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2020-10-28 17:29:23,939 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-10-28 17:29:24,133 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-10-28 17:29:24,333 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-28 17:29:24,521 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-28 17:29:24,717 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-28 17:29:24,908 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-28 17:29:25,195 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-28 17:29:26,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:26,749 INFO L93 Difference]: Finished difference Result 261 states and 377 transitions. [2020-10-28 17:29:26,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-28 17:29:26,750 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 112 [2020-10-28 17:29:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:26,755 INFO L225 Difference]: With dead ends: 261 [2020-10-28 17:29:26,755 INFO L226 Difference]: Without dead ends: 255 [2020-10-28 17:29:26,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2509 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=1172, Invalid=7948, Unknown=0, NotChecked=0, Total=9120 [2020-10-28 17:29:26,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-28 17:29:26,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 202. [2020-10-28 17:29:26,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-28 17:29:26,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 266 transitions. [2020-10-28 17:29:26,824 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 266 transitions. Word has length 112 [2020-10-28 17:29:26,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:26,825 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 266 transitions. [2020-10-28 17:29:26,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-28 17:29:26,825 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 266 transitions. [2020-10-28 17:29:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 17:29:26,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:26,828 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 5, 5, 4, 4, 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] [2020-10-28 17:29:26,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 17:29:26,829 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:26,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:26,829 INFO L82 PathProgramCache]: Analyzing trace with hash 891897850, now seen corresponding path program 2 times [2020-10-28 17:29:26,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:26,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063430089] [2020-10-28 17:29:26,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:26,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:27,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:29,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:30,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:31,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:31,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 17:29:31,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:31,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 17:29:31,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:31,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:31,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-28 17:29:31,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 17:29:31,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 17:29:31,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0