/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_init8_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:42:05,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:42:05,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:42:05,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:42:05,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:42:05,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:42:05,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:42:05,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:42:05,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:42:05,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:42:05,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:42:05,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:42:05,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:42:05,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:42:05,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:42:05,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:42:05,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:42:05,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:42:05,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:42:05,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:42:05,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:42:05,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:42:05,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:42:05,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:42:05,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:42:05,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:42:05,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:42:05,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:42:05,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:42:05,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:42:05,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:42:05,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:42:05,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:42:05,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:42:05,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:42:05,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:42:05,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:42:05,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:42:05,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:42:05,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:42:05,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:42:05,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:42:06,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:42:06,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:42:06,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:42:06,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:42:06,043 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:42:06,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:42:06,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:42:06,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:42:06,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:42:06,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:42:06,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:42:06,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:42:06,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:42:06,046 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:42:06,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:42:06,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:42:06,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:42:06,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:42:06,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:42:06,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:42:06,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:42:06,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:42:06,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:42:06,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:42:06,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:42:06,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:42:06,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:42:06,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:42:06,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:42:06,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:42:06,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:42:06,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:42:06,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:42:06,482 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:42:06,483 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:42:06,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init8_ground-1.i [2020-10-29 03:42:06,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f82b4a1a6/874b5aa8c2bc4b3986721baf70b80616/FLAGd1a7ec827 [2020-10-29 03:42:07,207 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:42:07,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_init8_ground-1.i [2020-10-29 03:42:07,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f82b4a1a6/874b5aa8c2bc4b3986721baf70b80616/FLAGd1a7ec827 [2020-10-29 03:42:07,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f82b4a1a6/874b5aa8c2bc4b3986721baf70b80616 [2020-10-29 03:42:07,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:42:07,562 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:42:07,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:42:07,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:42:07,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:42:07,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:42:07" (1/1) ... [2020-10-29 03:42:07,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d19645f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:07, skipping insertion in model container [2020-10-29 03:42:07,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:42:07" (1/1) ... [2020-10-29 03:42:07,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:42:07,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:42:07,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:42:07,913 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:42:07,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:42:07,956 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:42:07,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:07 WrapperNode [2020-10-29 03:42:07,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:42:07,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:42:07,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:42:07,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:42:07,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:07" (1/1) ... [2020-10-29 03:42:07,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:07" (1/1) ... [2020-10-29 03:42:07,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:07" (1/1) ... [2020-10-29 03:42:07,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:07" (1/1) ... [2020-10-29 03:42:07,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:07" (1/1) ... [2020-10-29 03:42:07,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:07" (1/1) ... [2020-10-29 03:42:08,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:07" (1/1) ... [2020-10-29 03:42:08,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:42:08,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:42:08,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:42:08,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:42:08,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:42:08,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:42:08,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:42:08,089 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:42:08,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:42:08,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:42:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:42:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:42:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:42:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:42:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:42:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:42:08,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:42:08,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:42:08,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:42:08,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:42:08,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:42:08,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:42:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:42:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:42:08,457 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:42:08,457 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-29 03:42:08,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:42:08 BoogieIcfgContainer [2020-10-29 03:42:08,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:42:08,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:42:08,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:42:08,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:42:08,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:42:07" (1/3) ... [2020-10-29 03:42:08,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a577a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:42:08, skipping insertion in model container [2020-10-29 03:42:08,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:07" (2/3) ... [2020-10-29 03:42:08,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a577a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:42:08, skipping insertion in model container [2020-10-29 03:42:08,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:42:08" (3/3) ... [2020-10-29 03:42:08,473 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init8_ground-1.i [2020-10-29 03:42:08,492 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:42:08,499 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:42:08,517 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:42:08,560 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:42:08,560 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:42:08,563 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:42:08,564 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:42:08,564 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:42:08,564 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:42:08,564 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:42:08,564 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:42:08,609 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-29 03:42:08,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 03:42:08,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:08,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:08,624 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:08,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:08,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1772990658, now seen corresponding path program 1 times [2020-10-29 03:42:08,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:08,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454838026] [2020-10-29 03:42:08,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:08,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:09,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:09,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:09,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:09,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:11,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:11,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 03:42:11,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:42:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2804 [2020-10-29 03:42:11,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:11,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:11,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:42:11,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:42:11,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:42:11,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 03:42:11,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:11,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:11,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:11,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:11,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:11,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:42:11,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:11,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:11,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:11,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454838026] [2020-10-29 03:42:11,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:42:11,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:42:11,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306471416] [2020-10-29 03:42:11,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:42:11,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:11,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:42:11,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:42:11,825 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-10-29 03:42:12,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:12,088 INFO L93 Difference]: Finished difference Result 82 states and 136 transitions. [2020-10-29 03:42:12,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:42:12,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-29 03:42:12,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:12,099 INFO L225 Difference]: With dead ends: 82 [2020-10-29 03:42:12,100 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 03:42:12,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:42:12,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 03:42:12,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-29 03:42:12,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 03:42:12,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-29 03:42:12,169 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 29 [2020-10-29 03:42:12,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:12,170 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-29 03:42:12,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:42:12,170 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-29 03:42:12,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 03:42:12,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:12,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:12,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:42:12,175 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:12,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:12,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1440650294, now seen corresponding path program 1 times [2020-10-29 03:42:12,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:12,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878478787] [2020-10-29 03:42:12,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:12,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:12,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:12,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:12,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:12,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:12,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:12,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:13,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:17,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 03:42:17,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:42:17,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:42:17,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:17,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:17,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:42:17,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 03:42:17,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 03:42:17,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:17,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:17,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:17,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:17,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:17,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:17,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:17,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:17,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:17,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:17,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:17,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 03:42:17,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878478787] [2020-10-29 03:42:17,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:17,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:42:17,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887248296] [2020-10-29 03:42:17,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:42:17,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:17,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:42:17,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:42:17,360 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 5 states. [2020-10-29 03:42:17,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:17,591 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2020-10-29 03:42:17,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:42:17,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-29 03:42:17,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:17,594 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:42:17,594 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:42:17,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:42:17,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:42:17,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-29 03:42:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 03:42:17,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-29 03:42:17,607 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 37 [2020-10-29 03:42:17,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:17,607 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-29 03:42:17,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:42:17,607 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-29 03:42:17,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:42:17,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:17,609 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:17,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:42:17,610 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:17,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:17,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1729417274, now seen corresponding path program 2 times [2020-10-29 03:42:17,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:17,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312783169] [2020-10-29 03:42:17,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:17,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:22,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:22,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 03:42:22,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:42:22,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:22,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:42:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:42:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:42:22,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:22,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:22,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:22,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:22,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:22,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:22,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:42:22,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:22,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:22,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:22,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:22,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:22,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 03:42:22,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312783169] [2020-10-29 03:42:22,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:22,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:42:22,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014392343] [2020-10-29 03:42:22,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:42:22,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:22,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:42:22,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:42:22,746 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 6 states. [2020-10-29 03:42:22,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:22,979 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2020-10-29 03:42:22,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:42:22,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-29 03:42:22,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:22,981 INFO L225 Difference]: With dead ends: 99 [2020-10-29 03:42:22,981 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:42:22,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:42:22,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:42:22,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-29 03:42:22,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 03:42:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2020-10-29 03:42:22,992 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 45 [2020-10-29 03:42:22,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:22,993 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2020-10-29 03:42:22,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:42:22,993 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2020-10-29 03:42:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 03:42:22,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:22,995 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1] [2020-10-29 03:42:22,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:42:22,995 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:22,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:22,996 INFO L82 PathProgramCache]: Analyzing trace with hash 620300470, now seen corresponding path program 3 times [2020-10-29 03:42:22,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:22,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298457514] [2020-10-29 03:42:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:23,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:23,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:23,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:23,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:23,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:24,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:28,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:42:28,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:28,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:42:28,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:28,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:42:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:42:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 03:42:28,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:28,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:28,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:28,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:28,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:28,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:42:28,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:28,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:28,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:28,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:28,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:28,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-29 03:42:28,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298457514] [2020-10-29 03:42:28,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:28,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:42:28,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876362242] [2020-10-29 03:42:28,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:42:28,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:28,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:42:28,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:42:28,129 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 7 states. [2020-10-29 03:42:28,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:28,355 INFO L93 Difference]: Finished difference Result 114 states and 137 transitions. [2020-10-29 03:42:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:42:28,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-29 03:42:28,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:28,356 INFO L225 Difference]: With dead ends: 114 [2020-10-29 03:42:28,356 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:42:28,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:42:28,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:42:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-29 03:42:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:42:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-10-29 03:42:28,376 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 53 [2020-10-29 03:42:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:28,376 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-10-29 03:42:28,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:42:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-10-29 03:42:28,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 03:42:28,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:28,381 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:28,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:42:28,381 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:28,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:28,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1183117498, now seen corresponding path program 4 times [2020-10-29 03:42:28,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:28,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138257256] [2020-10-29 03:42:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:28,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:31,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:33,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 03:42:33,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:33,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:42:33,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:33,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:33,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:42:33,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 03:42:33,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:33,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:42:33,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:33,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:33,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:33,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:33,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:42:33,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:33,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:33,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:33,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:33,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:33,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-29 03:42:33,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138257256] [2020-10-29 03:42:33,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:33,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:42:33,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87519742] [2020-10-29 03:42:33,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:42:33,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:33,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:42:33,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:42:33,595 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 8 states. [2020-10-29 03:42:33,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:33,832 INFO L93 Difference]: Finished difference Result 129 states and 152 transitions. [2020-10-29 03:42:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:42:33,833 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-29 03:42:33,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:33,835 INFO L225 Difference]: With dead ends: 129 [2020-10-29 03:42:33,835 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:42:33,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:42:33,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:42:33,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-29 03:42:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 03:42:33,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-10-29 03:42:33,854 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 61 [2020-10-29 03:42:33,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:33,854 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-10-29 03:42:33,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:42:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-10-29 03:42:33,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 03:42:33,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:33,857 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:33,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:42:33,859 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:33,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:33,859 INFO L82 PathProgramCache]: Analyzing trace with hash -608395978, now seen corresponding path program 5 times [2020-10-29 03:42:33,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:33,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497522319] [2020-10-29 03:42:33,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:38,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:38,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 03:42:38,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:42:38,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:42:38,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:38,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:38,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:42:38,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:42:38,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:42:38,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:39,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:39,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:39,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:39,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:39,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:39,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:39,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:39,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-29 03:42:39,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497522319] [2020-10-29 03:42:39,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:39,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:42:39,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201130268] [2020-10-29 03:42:39,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:42:39,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:39,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:42:39,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:42:39,039 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 9 states. [2020-10-29 03:42:39,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:39,290 INFO L93 Difference]: Finished difference Result 144 states and 167 transitions. [2020-10-29 03:42:39,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:42:39,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-29 03:42:39,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:39,292 INFO L225 Difference]: With dead ends: 144 [2020-10-29 03:42:39,292 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:42:39,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:42:39,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:42:39,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-29 03:42:39,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-29 03:42:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2020-10-29 03:42:39,303 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 69 [2020-10-29 03:42:39,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:39,303 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2020-10-29 03:42:39,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:42:39,303 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2020-10-29 03:42:39,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 03:42:39,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:39,305 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:39,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:42:39,305 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:39,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:39,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1558671674, now seen corresponding path program 6 times [2020-10-29 03:42:39,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:39,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100456211] [2020-10-29 03:42:39,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:44,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 03:42:44,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:42:44,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:42:44,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:44,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:44,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:42:44,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:42:44,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:42:44,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:44,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:44,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:44,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:44,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:44,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:42:44,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:44,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:44,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:44,474 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-29 03:42:44,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100456211] [2020-10-29 03:42:44,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:44,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:42:44,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976036575] [2020-10-29 03:42:44,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:42:44,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:44,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:42:44,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:42:44,478 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 10 states. [2020-10-29 03:42:44,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:44,744 INFO L93 Difference]: Finished difference Result 159 states and 182 transitions. [2020-10-29 03:42:44,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:42:44,745 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-10-29 03:42:44,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:44,747 INFO L225 Difference]: With dead ends: 159 [2020-10-29 03:42:44,747 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:42:44,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:42:44,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:42:44,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-29 03:42:44,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 03:42:44,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2020-10-29 03:42:44,765 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 77 [2020-10-29 03:42:44,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:44,765 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2020-10-29 03:42:44,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:42:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2020-10-29 03:42:44,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 03:42:44,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:44,766 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:44,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:42:44,767 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:44,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:44,767 INFO L82 PathProgramCache]: Analyzing trace with hash -909553226, now seen corresponding path program 7 times [2020-10-29 03:42:44,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:44,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127574056] [2020-10-29 03:42:44,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:44,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:45,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:49,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:42:49,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:42:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:42:49,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:49,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:42:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 03:42:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 03:42:49,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:49,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:49,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:49,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:49,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:49,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:49,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:49,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:49,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:49,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:49,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:49,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-10-29 03:42:49,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127574056] [2020-10-29 03:42:49,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:49,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:42:49,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654888915] [2020-10-29 03:42:49,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:42:49,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:49,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:42:49,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:42:49,952 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 11 states. [2020-10-29 03:42:50,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:50,230 INFO L93 Difference]: Finished difference Result 174 states and 197 transitions. [2020-10-29 03:42:50,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:42:50,230 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-10-29 03:42:50,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:50,231 INFO L225 Difference]: With dead ends: 174 [2020-10-29 03:42:50,231 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 03:42:50,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:42:50,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 03:42:50,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-29 03:42:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-29 03:42:50,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-10-29 03:42:50,254 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 85 [2020-10-29 03:42:50,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:50,254 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-10-29 03:42:50,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:42:50,255 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-10-29 03:42:50,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 03:42:50,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:50,258 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:50,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:42:50,258 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:50,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:50,259 INFO L82 PathProgramCache]: Analyzing trace with hash 119296442, now seen corresponding path program 8 times [2020-10-29 03:42:50,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:50,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827644471] [2020-10-29 03:42:50,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:50,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:50,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:50,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:50,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:55,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:55,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 03:42:55,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:42:55,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:42:55,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:55,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:55,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:42:55,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 03:42:55,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:42:55,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:55,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:55,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:55,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:55,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:55,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:55,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:55,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:55,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:55,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:55,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:55,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:55,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-29 03:42:55,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827644471] [2020-10-29 03:42:55,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:55,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:42:55,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630458974] [2020-10-29 03:42:55,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:42:55,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:55,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:42:55,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:42:55,459 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 12 states. [2020-10-29 03:42:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:55,850 INFO L93 Difference]: Finished difference Result 189 states and 212 transitions. [2020-10-29 03:42:55,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:42:55,851 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-10-29 03:42:55,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:55,852 INFO L225 Difference]: With dead ends: 189 [2020-10-29 03:42:55,852 INFO L226 Difference]: Without dead ends: 106 [2020-10-29 03:42:55,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:42:55,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-29 03:42:55,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-29 03:42:55,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-29 03:42:55,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 114 transitions. [2020-10-29 03:42:55,877 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 114 transitions. Word has length 93 [2020-10-29 03:42:55,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:55,878 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 114 transitions. [2020-10-29 03:42:55,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:42:55,878 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 114 transitions. [2020-10-29 03:42:55,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 03:42:55,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:55,882 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:55,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:42:55,883 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:55,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:55,883 INFO L82 PathProgramCache]: Analyzing trace with hash -591452618, now seen corresponding path program 9 times [2020-10-29 03:42:55,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:55,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421981767] [2020-10-29 03:42:55,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:55,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:56,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:56,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:56,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:56,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:58,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:00,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:00,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 03:43:00,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:00,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:43:00,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:00,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:43:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-29 03:43:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 03:43:00,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:01,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:01,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:01,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:01,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:01,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:01,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:01,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:01,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:01,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:01,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:01,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:01,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-29 03:43:01,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421981767] [2020-10-29 03:43:01,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:01,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:43:01,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939328967] [2020-10-29 03:43:01,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:43:01,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:01,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:43:01,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:43:01,114 INFO L87 Difference]: Start difference. First operand 106 states and 114 transitions. Second operand 13 states. [2020-10-29 03:43:01,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:01,459 INFO L93 Difference]: Finished difference Result 204 states and 227 transitions. [2020-10-29 03:43:01,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:43:01,460 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 101 [2020-10-29 03:43:01,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:01,461 INFO L225 Difference]: With dead ends: 204 [2020-10-29 03:43:01,461 INFO L226 Difference]: Without dead ends: 114 [2020-10-29 03:43:01,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:43:01,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-29 03:43:01,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-10-29 03:43:01,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-29 03:43:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2020-10-29 03:43:01,470 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 101 [2020-10-29 03:43:01,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:01,471 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2020-10-29 03:43:01,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:43:01,471 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2020-10-29 03:43:01,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 03:43:01,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:01,472 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:01,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:43:01,473 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:01,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:01,476 INFO L82 PathProgramCache]: Analyzing trace with hash 604213818, now seen corresponding path program 10 times [2020-10-29 03:43:01,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:01,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231354674] [2020-10-29 03:43:01,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:01,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:01,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:01,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:01,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:01,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:06,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:06,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 03:43:06,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:06,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:43:06,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:06,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:43:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:43:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:43:06,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:06,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:06,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:06,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:06,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:06,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:06,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:06,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:06,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:06,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:06,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:06,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:06,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2020-10-29 03:43:06,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231354674] [2020-10-29 03:43:06,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:06,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:43:06,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133485795] [2020-10-29 03:43:06,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:43:06,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:06,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:43:06,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:43:06,724 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand 14 states. [2020-10-29 03:43:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:07,045 INFO L93 Difference]: Finished difference Result 219 states and 242 transitions. [2020-10-29 03:43:07,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:43:07,046 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 109 [2020-10-29 03:43:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:07,047 INFO L225 Difference]: With dead ends: 219 [2020-10-29 03:43:07,047 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 03:43:07,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:43:07,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 03:43:07,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-10-29 03:43:07,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-29 03:43:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2020-10-29 03:43:07,062 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 109 [2020-10-29 03:43:07,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:07,063 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2020-10-29 03:43:07,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:43:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2020-10-29 03:43:07,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 03:43:07,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:07,069 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:07,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:43:07,069 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:07,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1606542666, now seen corresponding path program 11 times [2020-10-29 03:43:07,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:07,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275367605] [2020-10-29 03:43:07,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:07,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:07,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:07,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:07,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:07,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:10,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:12,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:12,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 03:43:12,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:12,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:43:12,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:12,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:43:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 03:43:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:43:12,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:12,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:12,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:12,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:12,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:12,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:12,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:12,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:12,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2020-10-29 03:43:12,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275367605] [2020-10-29 03:43:12,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:12,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:43:12,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113693583] [2020-10-29 03:43:12,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:43:12,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:12,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:43:12,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:43:12,321 INFO L87 Difference]: Start difference. First operand 122 states and 130 transitions. Second operand 15 states. [2020-10-29 03:43:12,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:12,795 INFO L93 Difference]: Finished difference Result 234 states and 257 transitions. [2020-10-29 03:43:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:43:12,795 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 117 [2020-10-29 03:43:12,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:12,796 INFO L225 Difference]: With dead ends: 234 [2020-10-29 03:43:12,797 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 03:43:12,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:43:12,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 03:43:12,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-10-29 03:43:12,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-29 03:43:12,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2020-10-29 03:43:12,806 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 117 [2020-10-29 03:43:12,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:12,806 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2020-10-29 03:43:12,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:43:12,806 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2020-10-29 03:43:12,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 03:43:12,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:12,808 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:12,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:43:12,808 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:12,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:12,809 INFO L82 PathProgramCache]: Analyzing trace with hash 343749306, now seen corresponding path program 12 times [2020-10-29 03:43:12,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:12,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907366916] [2020-10-29 03:43:12,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:12,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:12,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:13,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:13,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:13,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:16,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:17,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:17,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 03:43:17,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:17,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:43:17,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:17,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:17,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:43:17,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:43:17,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:43:17,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:18,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:18,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:18,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:18,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:18,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:18,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:18,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:18,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:18,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:18,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:18,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:18,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2020-10-29 03:43:18,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907366916] [2020-10-29 03:43:18,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:18,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:43:18,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104569121] [2020-10-29 03:43:18,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:43:18,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:18,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:43:18,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:43:18,091 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand 16 states. [2020-10-29 03:43:18,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:18,550 INFO L93 Difference]: Finished difference Result 249 states and 272 transitions. [2020-10-29 03:43:18,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:43:18,552 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 125 [2020-10-29 03:43:18,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:18,553 INFO L225 Difference]: With dead ends: 249 [2020-10-29 03:43:18,553 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 03:43:18,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:43:18,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 03:43:18,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-29 03:43:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-29 03:43:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 146 transitions. [2020-10-29 03:43:18,562 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 146 transitions. Word has length 125 [2020-10-29 03:43:18,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:18,562 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 146 transitions. [2020-10-29 03:43:18,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:43:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 146 transitions. [2020-10-29 03:43:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 03:43:18,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:18,564 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:18,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:43:18,564 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:18,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:18,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1038495542, now seen corresponding path program 13 times [2020-10-29 03:43:18,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:18,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395203062] [2020-10-29 03:43:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:18,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:18,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:18,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:18,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:18,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:23,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:23,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:23,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 03:43:23,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:23,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:43:23,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:23,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:23,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:43:23,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 03:43:23,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:43:23,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:23,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:23,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:23,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:23,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:23,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:23,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:23,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:23,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:23,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:23,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:23,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:23,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:43:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2020-10-29 03:43:23,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395203062] [2020-10-29 03:43:23,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:23,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:43:23,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323142488] [2020-10-29 03:43:23,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:43:23,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:23,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:43:23,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:43:23,878 INFO L87 Difference]: Start difference. First operand 138 states and 146 transitions. Second operand 17 states. [2020-10-29 03:43:24,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:24,238 INFO L93 Difference]: Finished difference Result 264 states and 287 transitions. [2020-10-29 03:43:24,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:43:24,238 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 133 [2020-10-29 03:43:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:24,240 INFO L225 Difference]: With dead ends: 264 [2020-10-29 03:43:24,240 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 03:43:24,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:43:24,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 03:43:24,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-29 03:43:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-29 03:43:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2020-10-29 03:43:24,251 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 133 [2020-10-29 03:43:24,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:24,251 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2020-10-29 03:43:24,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:43:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2020-10-29 03:43:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-29 03:43:24,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:24,253 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:24,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:43:24,254 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:24,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:24,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1150733510, now seen corresponding path program 14 times [2020-10-29 03:43:24,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:24,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633581498] [2020-10-29 03:43:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:24,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:24,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:24,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:29,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:29,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 03:43:29,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:29,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:43:29,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:29,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:43:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 03:43:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:43:29,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:29,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:29,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:29,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:29,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:29,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:29,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:29,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2020-10-29 03:43:29,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633581498] [2020-10-29 03:43:29,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:29,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:43:29,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006507872] [2020-10-29 03:43:29,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:43:29,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:29,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:43:29,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:43:29,579 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 18 states. [2020-10-29 03:43:30,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:30,047 INFO L93 Difference]: Finished difference Result 279 states and 302 transitions. [2020-10-29 03:43:30,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:43:30,048 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 141 [2020-10-29 03:43:30,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:30,049 INFO L225 Difference]: With dead ends: 279 [2020-10-29 03:43:30,049 INFO L226 Difference]: Without dead ends: 154 [2020-10-29 03:43:30,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:43:30,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-29 03:43:30,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-29 03:43:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-29 03:43:30,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 162 transitions. [2020-10-29 03:43:30,060 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 162 transitions. Word has length 141 [2020-10-29 03:43:30,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:30,060 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 162 transitions. [2020-10-29 03:43:30,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:43:30,060 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 162 transitions. [2020-10-29 03:43:30,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 03:43:30,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:30,062 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:30,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:43:30,062 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:30,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:30,063 INFO L82 PathProgramCache]: Analyzing trace with hash 2102879158, now seen corresponding path program 15 times [2020-10-29 03:43:30,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:30,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494756740] [2020-10-29 03:43:30,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:30,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:30,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:30,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:30,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:30,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:35,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:35,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 03:43:35,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:35,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 03:43:35,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:35,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:35,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:43:35,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 03:43:35,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:43:35,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:35,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:35,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:35,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:35,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:35,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:35,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:35,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:35,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-29 03:43:35,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494756740] [2020-10-29 03:43:35,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:35,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:43:35,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761362657] [2020-10-29 03:43:35,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:43:35,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:35,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:43:35,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:43:35,418 INFO L87 Difference]: Start difference. First operand 154 states and 162 transitions. Second operand 19 states. [2020-10-29 03:43:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:35,873 INFO L93 Difference]: Finished difference Result 294 states and 317 transitions. [2020-10-29 03:43:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:43:35,873 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 149 [2020-10-29 03:43:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:35,875 INFO L225 Difference]: With dead ends: 294 [2020-10-29 03:43:35,875 INFO L226 Difference]: Without dead ends: 162 [2020-10-29 03:43:35,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:43:35,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-29 03:43:35,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-10-29 03:43:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-29 03:43:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 170 transitions. [2020-10-29 03:43:35,886 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 170 transitions. Word has length 149 [2020-10-29 03:43:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:35,886 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 170 transitions. [2020-10-29 03:43:35,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:43:35,887 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 170 transitions. [2020-10-29 03:43:35,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 03:43:35,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:35,888 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:35,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:43:35,889 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:35,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:35,890 INFO L82 PathProgramCache]: Analyzing trace with hash 2108134330, now seen corresponding path program 16 times [2020-10-29 03:43:35,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:35,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377422308] [2020-10-29 03:43:35,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:36,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:36,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:36,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:36,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:40,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:40,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 03:43:40,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:40,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 03:43:40,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:40,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:40,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:43:40,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 03:43:40,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:43:40,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:41,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:41,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:41,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:41,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:41,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:41,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:41,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:41,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:41,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:41,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:41,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:41,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2020-10-29 03:43:41,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377422308] [2020-10-29 03:43:41,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:41,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:43:41,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796418258] [2020-10-29 03:43:41,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:43:41,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:41,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:43:41,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:43:41,286 INFO L87 Difference]: Start difference. First operand 162 states and 170 transitions. Second operand 20 states. [2020-10-29 03:43:41,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:41,844 INFO L93 Difference]: Finished difference Result 309 states and 332 transitions. [2020-10-29 03:43:41,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:43:41,844 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 157 [2020-10-29 03:43:41,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:41,846 INFO L225 Difference]: With dead ends: 309 [2020-10-29 03:43:41,846 INFO L226 Difference]: Without dead ends: 170 [2020-10-29 03:43:41,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:43:41,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-29 03:43:41,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-29 03:43:41,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-29 03:43:41,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 178 transitions. [2020-10-29 03:43:41,858 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 178 transitions. Word has length 157 [2020-10-29 03:43:41,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:41,858 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 178 transitions. [2020-10-29 03:43:41,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:43:41,858 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 178 transitions. [2020-10-29 03:43:41,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 03:43:41,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:41,860 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:41,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:43:41,861 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:41,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:41,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1003374538, now seen corresponding path program 17 times [2020-10-29 03:43:41,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:41,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254777171] [2020-10-29 03:43:41,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:41,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:42,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:42,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:42,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:42,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:46,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:46,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-29 03:43:46,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:46,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 03:43:46,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:46,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:46,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:43:46,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-29 03:43:46,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:43:46,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:47,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:47,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:47,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:47,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:47,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:47,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:47,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:47,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 1071 trivial. 0 not checked. [2020-10-29 03:43:47,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254777171] [2020-10-29 03:43:47,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:47,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:43:47,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149382493] [2020-10-29 03:43:47,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:43:47,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:47,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:43:47,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:43:47,289 INFO L87 Difference]: Start difference. First operand 170 states and 178 transitions. Second operand 21 states. [2020-10-29 03:43:47,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:47,869 INFO L93 Difference]: Finished difference Result 324 states and 347 transitions. [2020-10-29 03:43:47,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:43:47,870 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 165 [2020-10-29 03:43:47,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:47,872 INFO L225 Difference]: With dead ends: 324 [2020-10-29 03:43:47,872 INFO L226 Difference]: Without dead ends: 178 [2020-10-29 03:43:47,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:43:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-29 03:43:47,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-10-29 03:43:47,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-29 03:43:47,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 186 transitions. [2020-10-29 03:43:47,889 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 186 transitions. Word has length 165 [2020-10-29 03:43:47,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:47,889 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 186 transitions. [2020-10-29 03:43:47,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:43:47,889 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 186 transitions. [2020-10-29 03:43:47,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-29 03:43:47,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:47,892 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:47,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:43:47,892 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:47,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:47,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1108890682, now seen corresponding path program 18 times [2020-10-29 03:43:47,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:47,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878913355] [2020-10-29 03:43:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:48,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:48,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:48,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:48,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:48,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:52,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:52,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 03:43:52,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:52,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:43:52,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:52,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:52,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:43:52,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 03:43:52,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:43:52,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:53,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:53,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:53,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:53,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:53,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:53,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:53,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:53,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:53,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1197 trivial. 0 not checked. [2020-10-29 03:43:53,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878913355] [2020-10-29 03:43:53,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:53,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:43:53,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218682232] [2020-10-29 03:43:53,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:43:53,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:53,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:43:53,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:43:53,354 INFO L87 Difference]: Start difference. First operand 178 states and 186 transitions. Second operand 22 states. [2020-10-29 03:43:53,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:53,961 INFO L93 Difference]: Finished difference Result 339 states and 362 transitions. [2020-10-29 03:43:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:43:53,962 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 173 [2020-10-29 03:43:53,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:53,964 INFO L225 Difference]: With dead ends: 339 [2020-10-29 03:43:53,964 INFO L226 Difference]: Without dead ends: 186 [2020-10-29 03:43:53,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:43:53,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-29 03:43:53,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-10-29 03:43:53,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-29 03:43:53,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 194 transitions. [2020-10-29 03:43:53,976 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 194 transitions. Word has length 173 [2020-10-29 03:43:53,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:53,976 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 194 transitions. [2020-10-29 03:43:53,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:43:53,976 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 194 transitions. [2020-10-29 03:43:53,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-29 03:43:53,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:53,978 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:53,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:43:53,978 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:53,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:53,978 INFO L82 PathProgramCache]: Analyzing trace with hash 370486454, now seen corresponding path program 19 times [2020-10-29 03:43:53,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:53,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171768077] [2020-10-29 03:43:53,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:54,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:54,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:54,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:54,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:54,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:59,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:59,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-29 03:43:59,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:43:59,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:59,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:43:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 03:43:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:43:59,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:59,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:59,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:59,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:59,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:59,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:59,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:59,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:59,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 1330 trivial. 0 not checked. [2020-10-29 03:43:59,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171768077] [2020-10-29 03:43:59,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:59,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:43:59,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399693636] [2020-10-29 03:43:59,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:43:59,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:59,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:43:59,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:43:59,465 INFO L87 Difference]: Start difference. First operand 186 states and 194 transitions. Second operand 23 states. [2020-10-29 03:44:00,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:00,073 INFO L93 Difference]: Finished difference Result 354 states and 377 transitions. [2020-10-29 03:44:00,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:44:00,074 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 181 [2020-10-29 03:44:00,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:00,075 INFO L225 Difference]: With dead ends: 354 [2020-10-29 03:44:00,075 INFO L226 Difference]: Without dead ends: 194 [2020-10-29 03:44:00,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:44:00,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-29 03:44:00,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-29 03:44:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-29 03:44:00,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 202 transitions. [2020-10-29 03:44:00,090 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 202 transitions. Word has length 181 [2020-10-29 03:44:00,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:00,092 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 202 transitions. [2020-10-29 03:44:00,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:44:00,092 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 202 transitions. [2020-10-29 03:44:00,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 03:44:00,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:00,093 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:00,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:44:00,094 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:00,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:00,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1906013370, now seen corresponding path program 20 times [2020-10-29 03:44:00,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:00,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44694657] [2020-10-29 03:44:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:00,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:00,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:00,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:00,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:00,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:05,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:05,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-29 03:44:05,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:05,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:44:05,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:05,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:05,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:44:05,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-29 03:44:05,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:44:05,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:05,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:05,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:05,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:05,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:05,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:05,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:05,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:05,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:05,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:05,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:05,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:05,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1470 trivial. 0 not checked. [2020-10-29 03:44:05,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44694657] [2020-10-29 03:44:05,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:05,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:44:05,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345477546] [2020-10-29 03:44:05,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:44:05,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:05,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:44:05,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:44:05,670 INFO L87 Difference]: Start difference. First operand 194 states and 202 transitions. Second operand 24 states. [2020-10-29 03:44:06,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:06,220 INFO L93 Difference]: Finished difference Result 369 states and 392 transitions. [2020-10-29 03:44:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:44:06,220 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 189 [2020-10-29 03:44:06,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:06,221 INFO L225 Difference]: With dead ends: 369 [2020-10-29 03:44:06,222 INFO L226 Difference]: Without dead ends: 202 [2020-10-29 03:44:06,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:44:06,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-29 03:44:06,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-29 03:44:06,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-29 03:44:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 210 transitions. [2020-10-29 03:44:06,232 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 210 transitions. Word has length 189 [2020-10-29 03:44:06,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:06,233 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 210 transitions. [2020-10-29 03:44:06,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:44:06,233 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 210 transitions. [2020-10-29 03:44:06,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-29 03:44:06,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:06,234 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:06,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:44:06,235 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:06,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:06,235 INFO L82 PathProgramCache]: Analyzing trace with hash 346145078, now seen corresponding path program 21 times [2020-10-29 03:44:06,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:06,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433156629] [2020-10-29 03:44:06,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:06,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:06,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:06,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:06,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:11,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:11,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-29 03:44:11,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:11,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:44:11,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:11,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:11,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:44:11,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:44:11,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 03:44:11,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:11,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:11,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:11,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:11,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:11,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:11,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:11,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:11,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 1617 trivial. 0 not checked. [2020-10-29 03:44:11,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433156629] [2020-10-29 03:44:11,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:11,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:44:11,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244847531] [2020-10-29 03:44:11,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:44:11,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:11,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:44:11,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:44:11,800 INFO L87 Difference]: Start difference. First operand 202 states and 210 transitions. Second operand 25 states. [2020-10-29 03:44:12,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:12,368 INFO L93 Difference]: Finished difference Result 384 states and 407 transitions. [2020-10-29 03:44:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:44:12,369 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 197 [2020-10-29 03:44:12,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:12,370 INFO L225 Difference]: With dead ends: 384 [2020-10-29 03:44:12,370 INFO L226 Difference]: Without dead ends: 210 [2020-10-29 03:44:12,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:44:12,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-29 03:44:12,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-10-29 03:44:12,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-29 03:44:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 218 transitions. [2020-10-29 03:44:12,381 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 218 transitions. Word has length 197 [2020-10-29 03:44:12,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:12,382 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 218 transitions. [2020-10-29 03:44:12,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:44:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 218 transitions. [2020-10-29 03:44:12,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-29 03:44:12,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:12,383 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:12,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:44:12,384 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:12,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:12,384 INFO L82 PathProgramCache]: Analyzing trace with hash -149883590, now seen corresponding path program 22 times [2020-10-29 03:44:12,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:12,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712331381] [2020-10-29 03:44:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:12,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:12,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:12,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:12,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:17,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:17,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-29 03:44:17,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:17,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 03:44:17,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:17,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:44:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 03:44:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:44:17,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:17,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:17,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:17,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:17,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:17,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:17,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:17,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:17,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:17,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2024 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2020-10-29 03:44:17,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712331381] [2020-10-29 03:44:17,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:17,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:44:17,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814457918] [2020-10-29 03:44:17,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:44:17,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:17,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:44:17,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:44:17,992 INFO L87 Difference]: Start difference. First operand 210 states and 218 transitions. Second operand 26 states. [2020-10-29 03:44:18,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:18,673 INFO L93 Difference]: Finished difference Result 399 states and 422 transitions. [2020-10-29 03:44:18,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:44:18,673 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 205 [2020-10-29 03:44:18,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:18,676 INFO L225 Difference]: With dead ends: 399 [2020-10-29 03:44:18,676 INFO L226 Difference]: Without dead ends: 218 [2020-10-29 03:44:18,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:44:18,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-29 03:44:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-29 03:44:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-29 03:44:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 226 transitions. [2020-10-29 03:44:18,686 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 226 transitions. Word has length 205 [2020-10-29 03:44:18,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:18,687 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 226 transitions. [2020-10-29 03:44:18,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:44:18,687 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 226 transitions. [2020-10-29 03:44:18,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-29 03:44:18,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:18,688 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:18,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:44:18,689 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:18,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:18,689 INFO L82 PathProgramCache]: Analyzing trace with hash -8948298, now seen corresponding path program 23 times [2020-10-29 03:44:18,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:18,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87811987] [2020-10-29 03:44:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:18,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:18,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:19,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:19,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:19,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:23,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:23,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-29 03:44:23,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:23,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:44:23,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:23,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:44:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 03:44:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:44:23,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:24,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:24,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:24,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:24,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:24,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:24,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:24,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:24,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:24,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 1932 trivial. 0 not checked. [2020-10-29 03:44:24,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87811987] [2020-10-29 03:44:24,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:24,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:44:24,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097060369] [2020-10-29 03:44:24,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:44:24,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:24,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:44:24,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:44:24,357 INFO L87 Difference]: Start difference. First operand 218 states and 226 transitions. Second operand 27 states. [2020-10-29 03:44:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:25,082 INFO L93 Difference]: Finished difference Result 414 states and 437 transitions. [2020-10-29 03:44:25,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:44:25,082 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 213 [2020-10-29 03:44:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:25,083 INFO L225 Difference]: With dead ends: 414 [2020-10-29 03:44:25,084 INFO L226 Difference]: Without dead ends: 226 [2020-10-29 03:44:25,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:44:25,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-29 03:44:25,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-29 03:44:25,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-29 03:44:25,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 234 transitions. [2020-10-29 03:44:25,096 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 234 transitions. Word has length 213 [2020-10-29 03:44:25,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:25,096 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 234 transitions. [2020-10-29 03:44:25,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:44:25,097 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 234 transitions. [2020-10-29 03:44:25,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-29 03:44:25,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:25,098 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:25,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:44:25,100 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:25,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:25,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1062786490, now seen corresponding path program 24 times [2020-10-29 03:44:25,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:25,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548891412] [2020-10-29 03:44:25,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:25,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:30,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:30,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-29 03:44:30,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:30,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 03:44:30,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:30,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:44:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-29 03:44:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:44:30,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:30,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:30,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:30,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:30,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:30,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:30,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:44:30,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:30,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:30,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:30,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:30,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:30,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2400 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 2100 trivial. 0 not checked. [2020-10-29 03:44:30,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548891412] [2020-10-29 03:44:30,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:30,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:44:30,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165186675] [2020-10-29 03:44:30,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:44:30,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:30,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:44:30,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:44:30,797 INFO L87 Difference]: Start difference. First operand 226 states and 234 transitions. Second operand 28 states. [2020-10-29 03:44:31,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:31,534 INFO L93 Difference]: Finished difference Result 429 states and 452 transitions. [2020-10-29 03:44:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:44:31,534 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 221 [2020-10-29 03:44:31,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:31,536 INFO L225 Difference]: With dead ends: 429 [2020-10-29 03:44:31,536 INFO L226 Difference]: Without dead ends: 234 [2020-10-29 03:44:31,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:44:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-29 03:44:31,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-29 03:44:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-29 03:44:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 242 transitions. [2020-10-29 03:44:31,548 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 242 transitions. Word has length 221 [2020-10-29 03:44:31,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:31,548 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 242 transitions. [2020-10-29 03:44:31,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:44:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 242 transitions. [2020-10-29 03:44:31,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-29 03:44:31,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:31,551 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:31,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:44:31,552 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:31,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:31,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1271510474, now seen corresponding path program 25 times [2020-10-29 03:44:31,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:31,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064101424] [2020-10-29 03:44:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:31,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:32,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:32,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:32,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:36,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:36,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-29 03:44:36,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:36,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:44:36,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:36,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:44:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 03:44:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:44:36,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:37,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:37,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:37,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:37,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:37,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:37,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:37,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:37,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:37,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2600 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2020-10-29 03:44:37,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064101424] [2020-10-29 03:44:37,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:37,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:44:37,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507007196] [2020-10-29 03:44:37,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:44:37,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:37,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:44:37,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:44:37,329 INFO L87 Difference]: Start difference. First operand 234 states and 242 transitions. Second operand 29 states. [2020-10-29 03:44:37,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:37,955 INFO L93 Difference]: Finished difference Result 444 states and 467 transitions. [2020-10-29 03:44:37,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:44:37,959 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 229 [2020-10-29 03:44:37,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:37,961 INFO L225 Difference]: With dead ends: 444 [2020-10-29 03:44:37,961 INFO L226 Difference]: Without dead ends: 242 [2020-10-29 03:44:37,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:44:37,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-29 03:44:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-29 03:44:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-29 03:44:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 250 transitions. [2020-10-29 03:44:37,972 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 250 transitions. Word has length 229 [2020-10-29 03:44:37,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:37,972 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 250 transitions. [2020-10-29 03:44:37,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:44:37,973 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 250 transitions. [2020-10-29 03:44:37,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-29 03:44:37,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:37,974 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:37,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:44:37,974 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:37,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:37,975 INFO L82 PathProgramCache]: Analyzing trace with hash 961746490, now seen corresponding path program 26 times [2020-10-29 03:44:37,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:37,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790122595] [2020-10-29 03:44:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:38,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:38,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:38,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:38,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:43,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:43,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-29 03:44:43,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:43,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 03:44:43,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:43,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:43,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:44:43,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 03:44:43,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:44:43,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:43,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:43,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:43,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:43,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:43,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:43,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:44:43,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:43,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:43,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2808 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 2457 trivial. 0 not checked. [2020-10-29 03:44:43,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790122595] [2020-10-29 03:44:43,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:43,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:44:43,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125018947] [2020-10-29 03:44:43,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:44:43,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:43,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:44:43,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:44:43,809 INFO L87 Difference]: Start difference. First operand 242 states and 250 transitions. Second operand 30 states. [2020-10-29 03:44:44,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:44,466 INFO L93 Difference]: Finished difference Result 459 states and 482 transitions. [2020-10-29 03:44:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:44:44,468 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 237 [2020-10-29 03:44:44,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:44,469 INFO L225 Difference]: With dead ends: 459 [2020-10-29 03:44:44,469 INFO L226 Difference]: Without dead ends: 250 [2020-10-29 03:44:44,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:44:44,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-29 03:44:44,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-10-29 03:44:44,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-29 03:44:44,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 258 transitions. [2020-10-29 03:44:44,481 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 258 transitions. Word has length 237 [2020-10-29 03:44:44,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:44,481 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 258 transitions. [2020-10-29 03:44:44,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:44:44,482 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 258 transitions. [2020-10-29 03:44:44,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-29 03:44:44,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:44,483 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:44,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:44:44,483 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:44,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:44,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1367458122, now seen corresponding path program 27 times [2020-10-29 03:44:44,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:44,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116375263] [2020-10-29 03:44:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:44,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:44,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:45,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:45,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:45,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:49,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:49,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 03:44:49,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:49,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 03:44:49,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:49,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:49,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:44:49,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:44:49,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:44:49,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:50,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:50,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:50,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:50,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:50,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:50,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:44:50,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:50,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:50,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3024 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2646 trivial. 0 not checked. [2020-10-29 03:44:50,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116375263] [2020-10-29 03:44:50,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:50,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:44:50,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731626960] [2020-10-29 03:44:50,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:44:50,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:50,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:44:50,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:44:50,387 INFO L87 Difference]: Start difference. First operand 250 states and 258 transitions. Second operand 31 states. [2020-10-29 03:44:51,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:51,071 INFO L93 Difference]: Finished difference Result 474 states and 497 transitions. [2020-10-29 03:44:51,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:44:51,074 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 245 [2020-10-29 03:44:51,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:51,076 INFO L225 Difference]: With dead ends: 474 [2020-10-29 03:44:51,076 INFO L226 Difference]: Without dead ends: 258 [2020-10-29 03:44:51,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:44:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-29 03:44:51,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2020-10-29 03:44:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-29 03:44:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 266 transitions. [2020-10-29 03:44:51,088 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 266 transitions. Word has length 245 [2020-10-29 03:44:51,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:51,088 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 266 transitions. [2020-10-29 03:44:51,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:44:51,088 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 266 transitions. [2020-10-29 03:44:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-29 03:44:51,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:51,090 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:51,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:44:51,090 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:51,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:51,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1440724666, now seen corresponding path program 28 times [2020-10-29 03:44:51,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:51,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191306144] [2020-10-29 03:44:51,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:51,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:51,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:51,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:51,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:56,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:56,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 03:44:56,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:56,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 03:44:56,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:56,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:56,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:44:56,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:44:56,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:44:56,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:56,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:56,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:56,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:56,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:56,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:56,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:56,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:56,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:56,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3248 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 2842 trivial. 0 not checked. [2020-10-29 03:44:56,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191306144] [2020-10-29 03:44:56,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:56,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:44:56,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103002080] [2020-10-29 03:44:56,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:44:56,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:56,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:44:56,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:44:56,988 INFO L87 Difference]: Start difference. First operand 258 states and 266 transitions. Second operand 32 states. [2020-10-29 03:44:57,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:57,856 INFO L93 Difference]: Finished difference Result 489 states and 512 transitions. [2020-10-29 03:44:57,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:44:57,857 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 253 [2020-10-29 03:44:57,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:57,859 INFO L225 Difference]: With dead ends: 489 [2020-10-29 03:44:57,859 INFO L226 Difference]: Without dead ends: 266 [2020-10-29 03:44:57,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:44:57,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-29 03:44:57,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-29 03:44:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-29 03:44:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 274 transitions. [2020-10-29 03:44:57,872 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 274 transitions. Word has length 253 [2020-10-29 03:44:57,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:57,872 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 274 transitions. [2020-10-29 03:44:57,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:44:57,872 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 274 transitions. [2020-10-29 03:44:57,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-29 03:44:57,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:57,874 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:57,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:44:57,875 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:57,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:57,875 INFO L82 PathProgramCache]: Analyzing trace with hash 133124918, now seen corresponding path program 29 times [2020-10-29 03:44:57,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:57,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599075103] [2020-10-29 03:44:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:58,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:58,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:58,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:02,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:02,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-29 03:45:02,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:02,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:45:02,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:02,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:45:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:45:02,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:03,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:03,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:03,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:03,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:03,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:03,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:03,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:03,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3480 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2020-10-29 03:45:03,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599075103] [2020-10-29 03:45:03,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:03,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:45:03,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477322927] [2020-10-29 03:45:03,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:45:03,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:03,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:45:03,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:45:03,809 INFO L87 Difference]: Start difference. First operand 266 states and 274 transitions. Second operand 33 states. [2020-10-29 03:45:04,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:04,554 INFO L93 Difference]: Finished difference Result 504 states and 527 transitions. [2020-10-29 03:45:04,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:45:04,554 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 261 [2020-10-29 03:45:04,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:04,556 INFO L225 Difference]: With dead ends: 504 [2020-10-29 03:45:04,556 INFO L226 Difference]: Without dead ends: 274 [2020-10-29 03:45:04,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:45:04,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-29 03:45:04,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-10-29 03:45:04,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-29 03:45:04,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 282 transitions. [2020-10-29 03:45:04,569 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 282 transitions. Word has length 261 [2020-10-29 03:45:04,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:04,569 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 282 transitions. [2020-10-29 03:45:04,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:45:04,570 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 282 transitions. [2020-10-29 03:45:04,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-29 03:45:04,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:04,571 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:04,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:45:04,572 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:04,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:04,572 INFO L82 PathProgramCache]: Analyzing trace with hash -2015447238, now seen corresponding path program 30 times [2020-10-29 03:45:04,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:04,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375973252] [2020-10-29 03:45:04,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:04,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:04,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:05,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:05,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:05,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:09,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:09,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-29 03:45:09,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:09,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 03:45:09,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:09,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:09,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:45:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-29 03:45:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:45:09,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:10,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:10,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:10,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:10,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:10,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:10,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:10,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:10,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:10,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3720 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3255 trivial. 0 not checked. [2020-10-29 03:45:10,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375973252] [2020-10-29 03:45:10,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:10,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:45:10,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106234084] [2020-10-29 03:45:10,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:45:10,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:10,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:45:10,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:45:10,585 INFO L87 Difference]: Start difference. First operand 274 states and 282 transitions. Second operand 34 states. [2020-10-29 03:45:11,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:11,449 INFO L93 Difference]: Finished difference Result 519 states and 542 transitions. [2020-10-29 03:45:11,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:45:11,449 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 269 [2020-10-29 03:45:11,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:11,451 INFO L225 Difference]: With dead ends: 519 [2020-10-29 03:45:11,451 INFO L226 Difference]: Without dead ends: 282 [2020-10-29 03:45:11,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:45:11,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-29 03:45:11,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-29 03:45:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-29 03:45:11,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 290 transitions. [2020-10-29 03:45:11,463 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 290 transitions. Word has length 269 [2020-10-29 03:45:11,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:11,463 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 290 transitions. [2020-10-29 03:45:11,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:45:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 290 transitions. [2020-10-29 03:45:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-29 03:45:11,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:11,465 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:11,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:45:11,465 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:11,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:11,466 INFO L82 PathProgramCache]: Analyzing trace with hash 2015987638, now seen corresponding path program 31 times [2020-10-29 03:45:11,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:11,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335487363] [2020-10-29 03:45:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:11,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:11,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:12,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:12,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:12,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:16,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:16,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 03:45:16,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:16,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 03:45:16,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:16,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:45:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 03:45:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:45:16,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:17,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:17,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:17,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:17,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:17,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:17,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:17,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:17,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:17,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3968 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3472 trivial. 0 not checked. [2020-10-29 03:45:17,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335487363] [2020-10-29 03:45:17,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:17,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:45:17,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899083601] [2020-10-29 03:45:17,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:45:17,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:17,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:45:17,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:45:17,519 INFO L87 Difference]: Start difference. First operand 282 states and 290 transitions. Second operand 35 states. [2020-10-29 03:45:18,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:18,341 INFO L93 Difference]: Finished difference Result 534 states and 557 transitions. [2020-10-29 03:45:18,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:45:18,342 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 277 [2020-10-29 03:45:18,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:18,344 INFO L225 Difference]: With dead ends: 534 [2020-10-29 03:45:18,344 INFO L226 Difference]: Without dead ends: 290 [2020-10-29 03:45:18,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:45:18,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-29 03:45:18,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2020-10-29 03:45:18,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-29 03:45:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 298 transitions. [2020-10-29 03:45:18,355 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 298 transitions. Word has length 277 [2020-10-29 03:45:18,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:18,356 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 298 transitions. [2020-10-29 03:45:18,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:45:18,356 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 298 transitions. [2020-10-29 03:45:18,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-29 03:45:18,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:18,358 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:18,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:45:18,358 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:18,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:18,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1144002490, now seen corresponding path program 32 times [2020-10-29 03:45:18,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:18,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770995966] [2020-10-29 03:45:18,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:18,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:18,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:19,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:19,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:19,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:23,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:23,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-29 03:45:23,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 03:45:23,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:23,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:45:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-29 03:45:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:45:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:24,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:24,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:24,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:24,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:24,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:24,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:24,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:24,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:24,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:24,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:24,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:24,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4224 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2020-10-29 03:45:24,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770995966] [2020-10-29 03:45:24,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:24,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:45:24,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379784436] [2020-10-29 03:45:24,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:45:24,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:24,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:45:24,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:45:24,433 INFO L87 Difference]: Start difference. First operand 290 states and 298 transitions. Second operand 36 states. [2020-10-29 03:45:25,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:25,438 INFO L93 Difference]: Finished difference Result 549 states and 572 transitions. [2020-10-29 03:45:25,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:45:25,439 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 285 [2020-10-29 03:45:25,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:25,440 INFO L225 Difference]: With dead ends: 549 [2020-10-29 03:45:25,440 INFO L226 Difference]: Without dead ends: 298 [2020-10-29 03:45:25,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:45:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-29 03:45:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-29 03:45:25,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-29 03:45:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 306 transitions. [2020-10-29 03:45:25,454 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 306 transitions. Word has length 285 [2020-10-29 03:45:25,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:25,455 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 306 transitions. [2020-10-29 03:45:25,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:45:25,455 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 306 transitions. [2020-10-29 03:45:25,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-29 03:45:25,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:25,457 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:25,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:45:25,457 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:25,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:25,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1422711862, now seen corresponding path program 33 times [2020-10-29 03:45:25,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:25,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100432175] [2020-10-29 03:45:25,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:25,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:26,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:26,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:26,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:30,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:30,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-29 03:45:30,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:30,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 03:45:30,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:30,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:30,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:45:30,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:30,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:45:30,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:31,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:31,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:31,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:31,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:31,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:31,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:31,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:31,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:31,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:31,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:31,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:31,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4488 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3927 trivial. 0 not checked. [2020-10-29 03:45:31,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100432175] [2020-10-29 03:45:31,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:31,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:45:31,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016095308] [2020-10-29 03:45:31,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:45:31,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:31,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:45:31,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:45:31,553 INFO L87 Difference]: Start difference. First operand 298 states and 306 transitions. Second operand 37 states. [2020-10-29 03:45:32,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:32,434 INFO L93 Difference]: Finished difference Result 564 states and 587 transitions. [2020-10-29 03:45:32,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:45:32,435 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 293 [2020-10-29 03:45:32,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:32,437 INFO L225 Difference]: With dead ends: 564 [2020-10-29 03:45:32,437 INFO L226 Difference]: Without dead ends: 306 [2020-10-29 03:45:32,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:45:32,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-29 03:45:32,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2020-10-29 03:45:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-29 03:45:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 314 transitions. [2020-10-29 03:45:32,450 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 314 transitions. Word has length 293 [2020-10-29 03:45:32,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:32,450 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 314 transitions. [2020-10-29 03:45:32,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:45:32,450 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 314 transitions. [2020-10-29 03:45:32,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-29 03:45:32,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:32,452 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:32,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:45:32,453 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:32,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:32,453 INFO L82 PathProgramCache]: Analyzing trace with hash -2118920134, now seen corresponding path program 34 times [2020-10-29 03:45:32,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:32,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400259806] [2020-10-29 03:45:32,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:32,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:33,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:33,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:37,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:37,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-29 03:45:37,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:37,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-29 03:45:37,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:37,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:37,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:45:37,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:37,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:45:37,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:38,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:38,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:38,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:38,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:38,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:38,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:38,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:38,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:38,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4760 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 4165 trivial. 0 not checked. [2020-10-29 03:45:38,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400259806] [2020-10-29 03:45:38,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:38,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:45:38,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336150748] [2020-10-29 03:45:38,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:45:38,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:38,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:45:38,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:45:38,641 INFO L87 Difference]: Start difference. First operand 306 states and 314 transitions. Second operand 38 states. [2020-10-29 03:45:39,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:39,496 INFO L93 Difference]: Finished difference Result 579 states and 602 transitions. [2020-10-29 03:45:39,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:45:39,496 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 301 [2020-10-29 03:45:39,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:39,498 INFO L225 Difference]: With dead ends: 579 [2020-10-29 03:45:39,498 INFO L226 Difference]: Without dead ends: 314 [2020-10-29 03:45:39,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:45:39,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-29 03:45:39,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2020-10-29 03:45:39,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-29 03:45:39,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 322 transitions. [2020-10-29 03:45:39,510 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 322 transitions. Word has length 301 [2020-10-29 03:45:39,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:39,511 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 322 transitions. [2020-10-29 03:45:39,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:45:39,511 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 322 transitions. [2020-10-29 03:45:39,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-29 03:45:39,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:39,513 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:39,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:45:39,513 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:39,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:39,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1854320458, now seen corresponding path program 35 times [2020-10-29 03:45:39,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:39,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443684938] [2020-10-29 03:45:39,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:39,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:39,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:40,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:40,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:40,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:44,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:44,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-29 03:45:44,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-29 03:45:44,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:44,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 03:45:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-29 03:45:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:45:44,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:45,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:45,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:45,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:45,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:45,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:45,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:45,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:45,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:45,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:45,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:45,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:45,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 4410 trivial. 0 not checked. [2020-10-29 03:45:45,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443684938] [2020-10-29 03:45:45,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:45,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 03:45:45,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459464376] [2020-10-29 03:45:45,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 03:45:45,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:45,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 03:45:45,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:45:45,799 INFO L87 Difference]: Start difference. First operand 314 states and 322 transitions. Second operand 39 states. [2020-10-29 03:45:46,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:46,842 INFO L93 Difference]: Finished difference Result 594 states and 617 transitions. [2020-10-29 03:45:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:45:46,843 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 309 [2020-10-29 03:45:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:46,845 INFO L225 Difference]: With dead ends: 594 [2020-10-29 03:45:46,845 INFO L226 Difference]: Without dead ends: 322 [2020-10-29 03:45:46,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:45:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-29 03:45:46,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2020-10-29 03:45:46,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-29 03:45:46,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 330 transitions. [2020-10-29 03:45:46,857 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 330 transitions. Word has length 309 [2020-10-29 03:45:46,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:46,857 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 330 transitions. [2020-10-29 03:45:46,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 03:45:46,858 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 330 transitions. [2020-10-29 03:45:46,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-29 03:45:46,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:46,860 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:46,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:45:46,860 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:46,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:46,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1186334534, now seen corresponding path program 36 times [2020-10-29 03:45:46,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:46,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253804918] [2020-10-29 03:45:46,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:47,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:47,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:47,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:47,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:48,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:51,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:51,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-29 03:45:51,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:51,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 03:45:51,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:51,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:51,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 03:45:51,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-29 03:45:51,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:45:51,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:53,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:53,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:53,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:53,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:53,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:53,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:53,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:53,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:53,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:53,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:53,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:53,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5328 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 4662 trivial. 0 not checked. [2020-10-29 03:45:53,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253804918] [2020-10-29 03:45:53,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:53,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:45:53,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662266462] [2020-10-29 03:45:53,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:45:53,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:53,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:45:53,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:45:53,164 INFO L87 Difference]: Start difference. First operand 322 states and 330 transitions. Second operand 40 states. [2020-10-29 03:45:54,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:54,194 INFO L93 Difference]: Finished difference Result 609 states and 632 transitions. [2020-10-29 03:45:54,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 03:45:54,194 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 317 [2020-10-29 03:45:54,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:54,196 INFO L225 Difference]: With dead ends: 609 [2020-10-29 03:45:54,196 INFO L226 Difference]: Without dead ends: 330 [2020-10-29 03:45:54,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:45:54,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-29 03:45:54,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2020-10-29 03:45:54,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-29 03:45:54,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 338 transitions. [2020-10-29 03:45:54,209 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 338 transitions. Word has length 317 [2020-10-29 03:45:54,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:54,209 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 338 transitions. [2020-10-29 03:45:54,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 03:45:54,209 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 338 transitions. [2020-10-29 03:45:54,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-29 03:45:54,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:54,212 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:54,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:45:54,212 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:54,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:54,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1076959946, now seen corresponding path program 37 times [2020-10-29 03:45:54,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:54,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907037747] [2020-10-29 03:45:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:54,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:54,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:55,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:55,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:55,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking...