/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-crafted/bAnd3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:18:58,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:18:58,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:18:58,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:18:58,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:18:58,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:18:58,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:18:58,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:18:58,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:18:58,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:18:58,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:18:58,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:18:58,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:18:58,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:18:58,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:18:58,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:18:58,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:18:58,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:18:58,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:18:58,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:18:58,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:18:58,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:18:58,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:18:58,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:18:58,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:18:58,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:18:58,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:18:58,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:18:58,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:18:58,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:18:58,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:18:58,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:18:58,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:18:58,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:18:58,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:18:58,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:18:58,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:18:58,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:18:58,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:18:58,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:18:58,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:18:58,384 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 03:18:58,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:18:58,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:18:58,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:18:58,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:18:58,433 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:18:58,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:18:58,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:18:58,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:18:58,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:18:58,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:18:58,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:18:58,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:18:58,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:18:58,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:18:58,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:18:58,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:18:58,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:18:58,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:18:58,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:18:58,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:18:58,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:18:58,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:18:58,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:18:58,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:18:58,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:18:58,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:18:58,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:18:58,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:18:58,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:18:58,439 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:18:58,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:18:58,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:18:58,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:18:58,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:18:58,947 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:18:58,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bAnd3.i [2020-10-29 03:18:59,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc43ecc18/8eafc06e53634f1d9f920fc696b4d14f/FLAG8c052ed29 [2020-10-29 03:18:59,808 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:18:59,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bAnd3.i [2020-10-29 03:18:59,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc43ecc18/8eafc06e53634f1d9f920fc696b4d14f/FLAG8c052ed29 [2020-10-29 03:19:00,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc43ecc18/8eafc06e53634f1d9f920fc696b4d14f [2020-10-29 03:19:00,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:19:00,156 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:19:00,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:19:00,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:19:00,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:19:00,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:19:00" (1/1) ... [2020-10-29 03:19:00,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b87ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:00, skipping insertion in model container [2020-10-29 03:19:00,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:19:00" (1/1) ... [2020-10-29 03:19:00,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:19:00,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:19:00,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:19:00,386 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:19:00,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:19:00,430 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:19:00,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:00 WrapperNode [2020-10-29 03:19:00,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:19:00,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:19:00,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:19:00,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:19:00,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:00" (1/1) ... [2020-10-29 03:19:00,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:00" (1/1) ... [2020-10-29 03:19:00,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:00" (1/1) ... [2020-10-29 03:19:00,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:00" (1/1) ... [2020-10-29 03:19:00,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:00" (1/1) ... [2020-10-29 03:19:00,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:00" (1/1) ... [2020-10-29 03:19:00,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:00" (1/1) ... [2020-10-29 03:19:00,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:19:00,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:19:00,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:19:00,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:19:00,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:00" (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 03:19:00,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:19:00,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:19:00,569 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:19:00,569 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2020-10-29 03:19:00,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:19:00,569 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:19:00,569 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:19:00,569 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:19:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:19:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:19:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:19:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:19:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2020-10-29 03:19:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:19:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:19:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:19:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:19:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:19:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:19:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:19:00,941 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:19:00,941 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:19:00,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:19:00 BoogieIcfgContainer [2020-10-29 03:19:00,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:19:00,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:19:00,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:19:00,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:19:00,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:19:00" (1/3) ... [2020-10-29 03:19:00,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e42f391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:19:00, skipping insertion in model container [2020-10-29 03:19:00,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:00" (2/3) ... [2020-10-29 03:19:00,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e42f391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:19:00, skipping insertion in model container [2020-10-29 03:19:00,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:19:00" (3/3) ... [2020-10-29 03:19:00,953 INFO L111 eAbstractionObserver]: Analyzing ICFG bAnd3.i [2020-10-29 03:19:00,991 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:19:00,996 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:19:01,033 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:19:01,085 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:19:01,085 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:19:01,085 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:19:01,085 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:19:01,086 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:19:01,086 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:19:01,086 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:19:01,086 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:19:01,116 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-29 03:19:01,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:19:01,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:01,127 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:01,128 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:01,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:01,143 INFO L82 PathProgramCache]: Analyzing trace with hash 585288593, now seen corresponding path program 1 times [2020-10-29 03:19:01,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:01,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659821847] [2020-10-29 03:19:01,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:01,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:01,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:01,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:01,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:01,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:02,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:02,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:19:02,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:02,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-29 03:19:02,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:02,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 03:19:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:19:02,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:19:02,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:02,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:02,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:02,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:02,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:02,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:19:02,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:02,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:02,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:02,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:02,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:02,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:02,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:02,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:02,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:02,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:02,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:02,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:02,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 03:19:02,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:02,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:02,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 03:19:02,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:02,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:02,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 03:19:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:02,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:02,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:02,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:02,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:02,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:02,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:19:02,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:02,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:02,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:02,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:19:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:02,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:02,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:02,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:02,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:02,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:02,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 03:19:02,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:02,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:02,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:02,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 03:19:02,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:02,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:19:02,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659821847] [2020-10-29 03:19:02,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:02,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-29 03:19:02,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946659349] [2020-10-29 03:19:02,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:19:02,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:02,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:19:02,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:19:02,342 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-10-29 03:19:02,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:02,536 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-10-29 03:19:02,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:19:02,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-29 03:19:02,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:02,548 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:19:02,548 INFO L226 Difference]: Without dead ends: 30 [2020-10-29 03:19:02,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 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 03:19:02,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-29 03:19:02,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-29 03:19:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 03:19:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-29 03:19:02,623 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-29 03:19:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:02,624 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-29 03:19:02,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:19:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-29 03:19:02,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:19:02,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:02,628 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:02,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:19:02,629 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:02,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:02,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1906339825, now seen corresponding path program 1 times [2020-10-29 03:19:02,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:02,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673332666] [2020-10-29 03:19:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:02,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:02,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:02,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:02,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:04,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:04,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:19:04,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:04,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1859 [2020-10-29 03:19:04,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:04,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 03:19:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:19:04,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:04,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:04,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:04,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:04,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:04,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:04,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:19:04,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:04,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:04,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:04,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:04,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:04,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:04,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:04,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:04,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:04,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:04,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:04,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:04,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:19:04,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:04,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:19:04,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:04,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 03:19:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:04,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:04,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:04,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:04,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:04,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:04,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:19:04,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:04,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:19:04,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:04,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:19:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:04,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:04,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:04,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:04,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:04,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:04,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:19:04,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:04,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:04,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:04,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:04,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:19:04,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 03:19:04,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673332666] [2020-10-29 03:19:04,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:04,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:19:04,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171424898] [2020-10-29 03:19:04,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:19:04,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:04,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:19:04,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:19:04,690 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-29 03:19:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:04,843 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-10-29 03:19:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:19:04,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-29 03:19:04,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:04,845 INFO L225 Difference]: With dead ends: 54 [2020-10-29 03:19:04,845 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 03:19:04,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:19:04,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 03:19:04,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-10-29 03:19:04,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 03:19:04,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-29 03:19:04,855 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 36 [2020-10-29 03:19:04,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:04,855 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-29 03:19:04,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:19:04,856 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-29 03:19:04,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:19:04,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:04,857 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:04,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:19:04,858 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:04,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:04,858 INFO L82 PathProgramCache]: Analyzing trace with hash 411389835, now seen corresponding path program 1 times [2020-10-29 03:19:04,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:04,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262218157] [2020-10-29 03:19:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:04,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:04,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:04,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:04,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:09,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:19:09,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:19:09,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:09,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 03:19:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:09,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:09,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:09,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:09,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:09,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:09,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:19:09,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:09,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:09,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:09,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:09,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:09,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:09,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:09,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:09,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:09,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:19:09,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:09,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 03:19:09,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:09,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:19:09,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:10,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 03:19:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:10,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:10,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:10,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:10,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:19:10,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:10,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 03:19:10,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:10,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:10,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:10,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:19:10,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:19:10,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:19:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:10,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:10,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:10,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:10,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:19:10,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 03:19:10,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:10,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:19:10,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 03:19:10,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262218157] [2020-10-29 03:19:10,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:10,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:19:10,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023499440] [2020-10-29 03:19:10,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:19:10,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:10,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:19:10,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:19:10,132 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2020-10-29 03:19:10,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:10,321 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2020-10-29 03:19:10,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:19:10,322 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-29 03:19:10,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:10,323 INFO L225 Difference]: With dead ends: 61 [2020-10-29 03:19:10,323 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 03:19:10,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:19:10,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 03:19:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-29 03:19:10,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 03:19:10,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-29 03:19:10,333 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 44 [2020-10-29 03:19:10,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:10,333 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-29 03:19:10,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:19:10,334 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-29 03:19:10,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:19:10,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:10,335 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:10,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:19:10,336 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:10,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1713693191, now seen corresponding path program 2 times [2020-10-29 03:19:10,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:10,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623442506] [2020-10-29 03:19:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:10,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:10,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:10,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:10,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:11,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:15,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:15,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:19:15,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:15,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:19:15,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:15,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:15,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:15,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:15,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:15,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:15,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:15,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:15,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:19:15,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:15,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:15,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:15,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:15,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:15,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:15,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:15,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:15,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:19:15,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:15,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 03:19:15,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:15,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:15,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:15,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 03:19:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:15,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:15,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:15,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:15,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:19:15,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 03:19:15,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:15,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:15,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:15,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:15,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:15,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 03:19:15,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 03:19:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:15,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:15,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:15,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:19:15,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:15,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 03:19:15,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:15,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:15,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 03:19:15,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623442506] [2020-10-29 03:19:15,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:15,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:19:15,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432235019] [2020-10-29 03:19:15,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:19:15,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:15,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:19:15,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:19:15,598 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 6 states. [2020-10-29 03:19:15,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:15,771 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-10-29 03:19:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:19:15,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-29 03:19:15,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:15,773 INFO L225 Difference]: With dead ends: 66 [2020-10-29 03:19:15,773 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 03:19:15,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:19:15,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 03:19:15,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-29 03:19:15,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 03:19:15,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-29 03:19:15,782 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 52 [2020-10-29 03:19:15,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:15,782 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-29 03:19:15,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:19:15,783 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-29 03:19:15,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:19:15,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:15,785 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:15,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:19:15,785 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:15,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:15,786 INFO L82 PathProgramCache]: Analyzing trace with hash -913973499, now seen corresponding path program 3 times [2020-10-29 03:19:15,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:15,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722008505] [2020-10-29 03:19:15,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:15,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:15,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:15,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:17,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:20,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:20,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:19:20,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:20,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:19:20,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:20,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:20,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:20,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 03:19:20,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:20,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:20,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:20,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:20,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:20,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:20,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:20,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:19:20,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:20,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:20,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:20,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:20,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:20,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:20,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:20,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:20,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:20,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:20,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:19:20,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:20,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 03:19:20,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:20,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:20,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:19:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:20,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:20,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:20,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:20,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:19:20,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:20,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 03:19:20,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:20,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:20,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:20,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:19:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:20,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:20,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:20,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:19:20,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:20,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 03:19:20,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:20,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:20,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-29 03:19:20,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722008505] [2020-10-29 03:19:20,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:20,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:19:20,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215626228] [2020-10-29 03:19:20,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:19:20,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:20,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:19:20,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:19:20,989 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 7 states. [2020-10-29 03:19:21,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:21,236 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-10-29 03:19:21,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:19:21,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2020-10-29 03:19:21,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:21,238 INFO L225 Difference]: With dead ends: 70 [2020-10-29 03:19:21,239 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 03:19:21,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:19:21,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 03:19:21,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-29 03:19:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 03:19:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-29 03:19:21,254 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 58 [2020-10-29 03:19:21,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:21,255 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-29 03:19:21,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:19:21,256 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-29 03:19:21,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:19:21,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:21,258 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:21,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:19:21,259 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:21,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:21,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1807882877, now seen corresponding path program 4 times [2020-10-29 03:19:21,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:21,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248690119] [2020-10-29 03:19:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:23,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:26,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:19:26,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:19:26,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:26,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 03:19:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:26,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:26,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:26,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:26,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:26,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:26,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:19:26,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:26,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:26,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:26,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:26,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:26,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:26,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:26,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:26,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:19:26,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:26,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 03:19:26,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:26,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:26,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 03:19:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:26,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:26,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:19:26,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:26,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 03:19:26,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:26,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:26,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:19:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:26,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:19:26,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:26,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 03:19:26,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:26,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:26,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:26,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:26,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:26,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 48 proven. 105 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 03:19:26,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248690119] [2020-10-29 03:19:26,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:26,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:19:26,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886193835] [2020-10-29 03:19:26,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:19:26,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:26,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:19:26,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:19:26,522 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 12 states. [2020-10-29 03:19:26,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:26,882 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-10-29 03:19:26,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:19:26,882 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-29 03:19:26,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:26,884 INFO L225 Difference]: With dead ends: 77 [2020-10-29 03:19:26,884 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:19:26,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:19:26,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:19:26,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-29 03:19:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 03:19:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-29 03:19:26,895 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 64 [2020-10-29 03:19:26,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:26,895 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-29 03:19:26,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:19:26,895 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-29 03:19:26,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:19:26,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:26,897 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:26,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:19:26,897 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:26,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:26,898 INFO L82 PathProgramCache]: Analyzing trace with hash -646926593, now seen corresponding path program 5 times [2020-10-29 03:19:26,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:26,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805482001] [2020-10-29 03:19:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:26,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:31,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:31,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:19:31,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:31,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:19:31,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:31,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:31,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:31,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 03:19:31,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:31,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:32,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:32,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:32,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:19:32,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:32,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:32,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:32,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:32,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:19:32,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:32,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 03:19:32,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:32,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:32,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:32,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:32,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:19:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:19:32,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:32,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 03:19:32,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:32,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:32,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:32,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:32,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:19:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:19:32,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:32,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 03:19:32,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:32,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:32,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:32,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 03:19:32,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805482001] [2020-10-29 03:19:32,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:32,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:19:32,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494005202] [2020-10-29 03:19:32,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:19:32,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:32,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:19:32,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:19:32,227 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 14 states. [2020-10-29 03:19:32,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:32,690 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-10-29 03:19:32,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:19:32,690 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-10-29 03:19:32,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:32,694 INFO L225 Difference]: With dead ends: 85 [2020-10-29 03:19:32,696 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:19:32,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:19:32,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:19:32,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-29 03:19:32,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:19:32,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-29 03:19:32,713 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 72 [2020-10-29 03:19:32,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:32,716 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-29 03:19:32,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:19:32,716 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-29 03:19:32,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:19:32,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:32,718 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:32,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:19:32,719 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:32,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:32,719 INFO L82 PathProgramCache]: Analyzing trace with hash 789171067, now seen corresponding path program 6 times [2020-10-29 03:19:32,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:32,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405872402] [2020-10-29 03:19:32,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:37,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:37,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:37,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 03:19:37,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:37,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:19:37,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:37,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 03:19:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:37,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:37,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:37,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:37,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:37,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:37,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:19:37,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:37,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:37,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:37,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:37,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:37,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:37,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:37,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:37,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:37,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:37,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:19:37,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:37,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 03:19:37,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:37,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:37,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:37,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:37,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:37,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:37,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 03:19:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:38,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:38,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:19:38,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:38,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 03:19:38,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:38,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:38,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:38,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:19:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:38,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:38,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:19:38,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:38,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 03:19:38,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:38,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:38,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 108 proven. 241 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-29 03:19:38,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405872402] [2020-10-29 03:19:38,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:38,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:19:38,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089793106] [2020-10-29 03:19:38,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:19:38,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:38,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:19:38,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:19:38,100 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 16 states. [2020-10-29 03:19:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:38,653 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2020-10-29 03:19:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:19:38,653 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 80 [2020-10-29 03:19:38,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:38,654 INFO L225 Difference]: With dead ends: 93 [2020-10-29 03:19:38,654 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:19:38,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:19:38,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:19:38,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-29 03:19:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 03:19:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-29 03:19:38,669 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 80 [2020-10-29 03:19:38,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:38,669 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-29 03:19:38,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:19:38,670 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-29 03:19:38,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 03:19:38,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:38,671 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:38,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:19:38,672 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:38,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:38,672 INFO L82 PathProgramCache]: Analyzing trace with hash -880411913, now seen corresponding path program 7 times [2020-10-29 03:19:38,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:38,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411906925] [2020-10-29 03:19:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:38,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 03:19:43,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:19:43,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:19:43,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:43,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-29 03:19:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:43,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:43,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:43,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:43,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:19:43,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:43,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:43,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:43,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:43,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:19:43,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:43,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 03:19:43,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:43,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:43,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:19:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:44,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:44,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:19:44,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:44,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 03:19:44,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:44,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:44,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:44,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:44,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:44,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:44,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:19:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:44,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:44,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:44,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:44,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:19:44,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:44,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 03:19:44,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:44,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:44,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:44,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:44,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:44,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 147 proven. 330 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 03:19:44,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411906925] [2020-10-29 03:19:44,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:44,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:19:44,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165688455] [2020-10-29 03:19:44,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:19:44,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:44,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:19:44,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:19:44,064 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 18 states. [2020-10-29 03:19:44,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:44,637 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2020-10-29 03:19:44,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:19:44,637 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 88 [2020-10-29 03:19:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:44,638 INFO L225 Difference]: With dead ends: 101 [2020-10-29 03:19:44,638 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:19:44,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:19:44,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:19:44,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-29 03:19:44,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 03:19:44,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-29 03:19:44,657 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 88 [2020-10-29 03:19:44,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:44,657 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-29 03:19:44,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:19:44,657 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-29 03:19:44,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 03:19:44,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:44,661 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:44,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:19:44,662 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:44,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:44,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1548877171, now seen corresponding path program 8 times [2020-10-29 03:19:44,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:44,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425415474] [2020-10-29 03:19:44,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:44,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:44,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:44,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:49,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 03:19:49,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:19:49,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:19:49,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:49,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:49,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:49,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-29 03:19:49,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:49,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:49,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:49,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:49,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:49,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:19:49,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:49,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:49,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:49,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:49,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:49,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:49,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:49,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:49,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:19:49,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:49,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 03:19:49,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:49,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:19:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:19:49,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:50,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:19:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:50,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:50,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:50,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:50,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:19:50,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:50,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 03:19:50,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:50,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:19:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:19:50,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:50,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 03:19:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:50,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:50,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:50,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:50,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:19:50,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:50,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 03:19:50,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:50,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:50,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:19:50,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:50,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:19:50,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 192 proven. 433 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 03:19:50,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425415474] [2020-10-29 03:19:50,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:50,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:19:50,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309376940] [2020-10-29 03:19:50,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:19:50,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:50,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:19:50,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:19:50,103 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 20 states. [2020-10-29 03:19:50,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:50,750 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2020-10-29 03:19:50,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:19:50,751 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 96 [2020-10-29 03:19:50,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:50,752 INFO L225 Difference]: With dead ends: 109 [2020-10-29 03:19:50,753 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:19:50,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:19:50,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:19:50,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-10-29 03:19:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 03:19:50,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-10-29 03:19:50,762 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 96 [2020-10-29 03:19:50,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:50,762 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-10-29 03:19:50,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:19:50,763 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-10-29 03:19:50,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 03:19:50,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:50,764 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:50,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:19:50,764 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:50,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:50,765 INFO L82 PathProgramCache]: Analyzing trace with hash -775253265, now seen corresponding path program 9 times [2020-10-29 03:19:50,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:50,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866155003] [2020-10-29 03:19:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:50,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:50,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:50,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:55,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 03:19:55,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:19:55,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:19:55,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:55,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:19:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-29 03:19:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:19:55,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:55,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:55,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:55,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:55,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:55,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:19:55,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:55,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:55,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:55,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:55,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:55,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:55,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:55,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:55,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:19:55,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:55,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 03:19:55,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:55,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:19:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:19:55,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:56,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:19:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:56,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:56,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:56,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:56,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:19:56,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:56,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 03:19:56,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:56,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:19:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:56,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:19:56,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:56,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:19:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:56,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:56,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:56,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:56,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:19:56,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:56,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 03:19:56,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:56,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:56,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:19:56,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:19:56,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:56,322 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 243 proven. 550 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 03:19:56,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866155003] [2020-10-29 03:19:56,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:56,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:19:56,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823380849] [2020-10-29 03:19:56,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:19:56,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:56,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:19:56,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:19:56,325 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 22 states. [2020-10-29 03:19:57,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:57,052 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2020-10-29 03:19:57,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:19:57,052 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 104 [2020-10-29 03:19:57,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:57,054 INFO L225 Difference]: With dead ends: 117 [2020-10-29 03:19:57,054 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:19:57,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=252, Invalid=740, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:19:57,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:19:57,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-29 03:19:57,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-29 03:19:57,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-10-29 03:19:57,064 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 104 [2020-10-29 03:19:57,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:57,064 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-10-29 03:19:57,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:19:57,064 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-10-29 03:19:57,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:19:57,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:57,066 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:57,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:19:57,066 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:57,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:57,067 INFO L82 PathProgramCache]: Analyzing trace with hash 725384043, now seen corresponding path program 10 times [2020-10-29 03:19:57,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:57,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960432052] [2020-10-29 03:19:57,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:57,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:57,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:57,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:57,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:02,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:02,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 03:20:02,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:02,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:20:02,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:02,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 03:20:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:02,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:02,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:02,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:02,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:02,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:02,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:02,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:20:02,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:02,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:02,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:20:02,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:02,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:02,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:02,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:02,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:20:02,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:02,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 03:20:02,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:02,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:02,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:02,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:02,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:02,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:20:02,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 03:20:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:02,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:02,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:02,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:02,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:20:02,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:02,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 03:20:02,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:02,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:02,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:02,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 03:20:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:02,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:02,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:02,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:02,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:20:02,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 03:20:02,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:02,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:02,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 300 proven. 681 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 03:20:02,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960432052] [2020-10-29 03:20:02,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:02,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:20:02,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890399628] [2020-10-29 03:20:02,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:20:02,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:02,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:20:02,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:20:02,776 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 24 states. [2020-10-29 03:20:03,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:03,555 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2020-10-29 03:20:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:20:03,556 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 112 [2020-10-29 03:20:03,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:03,557 INFO L225 Difference]: With dead ends: 125 [2020-10-29 03:20:03,557 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 03:20:03,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:20:03,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 03:20:03,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-29 03:20:03,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 03:20:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-10-29 03:20:03,568 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 112 [2020-10-29 03:20:03,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:03,568 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-10-29 03:20:03,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:20:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-10-29 03:20:03,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 03:20:03,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:03,570 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:03,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:20:03,570 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:03,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:03,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1122268903, now seen corresponding path program 11 times [2020-10-29 03:20:03,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:03,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202904258] [2020-10-29 03:20:03,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:03,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:03,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:03,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:08,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:08,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 03:20:08,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:20:08,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:08,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 03:20:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:08,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:08,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:08,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:08,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:08,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:08,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:08,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:20:08,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:08,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:08,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:08,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:08,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:20:08,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:08,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:08,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:08,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:08,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:20:08,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:08,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 03:20:08,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:08,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:08,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:20:09,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:20:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:09,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:09,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:09,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:09,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:20:09,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 03:20:09,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:09,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:09,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:09,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:20:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:09,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:09,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:09,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:09,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:20:09,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:09,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 03:20:09,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:09,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:09,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:09,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:09,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:09,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 363 proven. 826 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 03:20:09,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202904258] [2020-10-29 03:20:09,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:09,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:20:09,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564300887] [2020-10-29 03:20:09,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:20:09,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:09,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:20:09,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:20:09,510 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 26 states. [2020-10-29 03:20:10,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:10,341 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2020-10-29 03:20:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:20:10,341 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 120 [2020-10-29 03:20:10,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:10,345 INFO L225 Difference]: With dead ends: 133 [2020-10-29 03:20:10,345 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:20:10,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=350, Invalid=1056, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:20:10,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:20:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-29 03:20:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 03:20:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-10-29 03:20:10,362 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 120 [2020-10-29 03:20:10,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:10,362 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-10-29 03:20:10,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:20:10,363 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-10-29 03:20:10,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 03:20:10,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:10,366 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:10,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:20:10,367 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:10,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:10,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1712372381, now seen corresponding path program 12 times [2020-10-29 03:20:10,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:10,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159232709] [2020-10-29 03:20:10,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:10,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:10,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:10,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:10,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:15,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:15,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 03:20:15,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:15,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:20:15,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:15,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 03:20:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:15,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:15,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:15,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:15,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:15,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:15,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:15,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:15,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:15,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:15,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:15,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:15,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:15,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:15,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:20:15,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:15,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 03:20:15,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:15,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:15,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:15,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:20:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:15,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:15,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:15,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:20:15,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:15,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 03:20:15,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:15,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:15,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:16,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 03:20:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:16,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:16,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:16,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:16,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:20:16,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:16,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 03:20:16,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:16,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:16,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1504 backedges. 432 proven. 985 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 03:20:16,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159232709] [2020-10-29 03:20:16,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:16,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:20:16,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118049430] [2020-10-29 03:20:16,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:20:16,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:16,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:20:16,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:20:16,112 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 28 states. [2020-10-29 03:20:17,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:17,105 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2020-10-29 03:20:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:20:17,105 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 128 [2020-10-29 03:20:17,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:17,106 INFO L225 Difference]: With dead ends: 141 [2020-10-29 03:20:17,107 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 03:20:17,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=405, Invalid=1235, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:20:17,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 03:20:17,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-29 03:20:17,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-29 03:20:17,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-29 03:20:17,116 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 128 [2020-10-29 03:20:17,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:17,116 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-29 03:20:17,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:20:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-29 03:20:17,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 03:20:17,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:17,118 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:17,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:20:17,118 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:17,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:17,119 INFO L82 PathProgramCache]: Analyzing trace with hash 611952351, now seen corresponding path program 13 times [2020-10-29 03:20:17,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:17,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241096434] [2020-10-29 03:20:17,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:17,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:17,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:17,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:17,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:22,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:22,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 03:20:22,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:22,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:20:22,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:22,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 03:20:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:22,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:22,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:22,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:22,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:22,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:22,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:22,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:22,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:22,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:22,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:22,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:22,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:22,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:22,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:22,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:20:22,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:22,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 03:20:22,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:22,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:22,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:22,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:22,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:22,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:22,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:20:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:22,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:22,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:22,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:20:22,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:22,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 03:20:22,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:22,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:22,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:22,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:22,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:22,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:22,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 03:20:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:22,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:22,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:22,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:22,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:20:22,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:22,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 03:20:22,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:22,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:22,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:22,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:22,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:22,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 507 proven. 1158 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-29 03:20:22,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241096434] [2020-10-29 03:20:22,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:22,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:20:22,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654842912] [2020-10-29 03:20:22,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:20:22,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:22,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:20:22,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:20:22,875 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 30 states. [2020-10-29 03:20:23,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:23,902 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2020-10-29 03:20:23,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:20:23,903 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 136 [2020-10-29 03:20:23,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:23,904 INFO L225 Difference]: With dead ends: 149 [2020-10-29 03:20:23,904 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:20:23,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=464, Invalid=1428, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:20:23,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:20:23,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-29 03:20:23,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 03:20:23,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-29 03:20:23,923 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 136 [2020-10-29 03:20:23,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:23,924 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-29 03:20:23,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:20:23,924 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-29 03:20:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 03:20:23,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:23,926 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:23,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:20:23,926 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:23,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:23,927 INFO L82 PathProgramCache]: Analyzing trace with hash 361782107, now seen corresponding path program 14 times [2020-10-29 03:20:23,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:23,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998070185] [2020-10-29 03:20:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:23,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:23,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:24,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:28,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:28,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 03:20:28,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:20:28,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:28,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-29 03:20:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:28,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:29,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:29,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:29,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:29,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:29,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:29,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:20:29,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:29,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:29,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:29,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:29,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:29,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:29,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:29,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:29,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:29,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:29,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:20:29,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:29,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 03:20:29,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:29,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:29,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:29,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:20:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:29,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:29,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:29,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:29,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:20:29,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:29,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 03:20:29,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:29,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:29,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:29,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 03:20:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:29,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:29,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:29,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:29,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:20:29,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:29,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 03:20:29,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:29,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2032 backedges. 588 proven. 1345 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 03:20:29,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998070185] [2020-10-29 03:20:29,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:29,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:20:29,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482085843] [2020-10-29 03:20:29,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:20:29,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:29,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:20:29,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:20:29,783 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 32 states. [2020-10-29 03:20:30,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:30,945 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-10-29 03:20:30,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:20:30,947 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 144 [2020-10-29 03:20:30,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:30,948 INFO L225 Difference]: With dead ends: 157 [2020-10-29 03:20:30,948 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:20:30,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:20:30,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:20:30,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-29 03:20:30,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 03:20:30,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-10-29 03:20:30,957 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 144 [2020-10-29 03:20:30,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:30,957 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-10-29 03:20:30,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:20:30,957 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-10-29 03:20:30,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 03:20:30,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:30,959 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:30,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:20:30,959 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:30,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:30,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1422908713, now seen corresponding path program 15 times [2020-10-29 03:20:30,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:30,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854534003] [2020-10-29 03:20:30,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:30,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:30,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:35,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:35,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 03:20:35,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:35,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:20:35,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:35,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 03:20:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:35,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:36,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:36,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:36,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:36,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:36,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:36,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:36,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:36,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:36,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:36,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:36,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:36,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:36,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:20:36,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:36,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 03:20:36,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:36,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:36,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:36,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:36,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:36,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:36,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:20:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:36,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:36,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:36,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:36,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:20:36,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:36,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 03:20:36,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:36,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:36,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:36,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:36,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:36,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:20:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:36,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:36,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:36,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:20:36,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:36,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 03:20:36,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:36,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:36,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:36,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:36,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:36,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2326 backedges. 675 proven. 1546 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-29 03:20:36,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854534003] [2020-10-29 03:20:36,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:36,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:20:36,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658255546] [2020-10-29 03:20:36,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:20:36,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:36,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:20:36,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:20:36,912 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 34 states. [2020-10-29 03:20:38,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:38,119 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-10-29 03:20:38,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:20:38,119 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 152 [2020-10-29 03:20:38,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:38,122 INFO L225 Difference]: With dead ends: 165 [2020-10-29 03:20:38,122 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:20:38,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=594, Invalid=1856, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:20:38,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:20:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-29 03:20:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 03:20:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2020-10-29 03:20:38,137 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 152 [2020-10-29 03:20:38,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:38,137 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2020-10-29 03:20:38,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:20:38,137 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2020-10-29 03:20:38,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 03:20:38,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:38,140 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:38,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:20:38,140 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:38,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:38,141 INFO L82 PathProgramCache]: Analyzing trace with hash -96092845, now seen corresponding path program 16 times [2020-10-29 03:20:38,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:38,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119787121] [2020-10-29 03:20:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:38,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:43,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:43,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 03:20:43,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:43,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:20:43,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:43,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-29 03:20:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:43,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:43,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:43,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:43,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:43,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:43,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:43,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:43,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:43,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:43,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:43,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:43,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:43,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:43,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:43,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:43,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:43,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:43,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:20:43,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:43,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 03:20:43,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:43,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:43,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:43,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:20:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:43,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:43,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:44,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:44,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:20:44,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:44,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 03:20:44,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:44,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:44,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:44,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:44,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:44,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:44,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 03:20:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:44,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:44,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:44,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:44,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:20:44,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:44,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 03:20:44,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:44,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:44,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 768 proven. 1761 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-29 03:20:44,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119787121] [2020-10-29 03:20:44,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:44,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:20:44,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883548822] [2020-10-29 03:20:44,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:20:44,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:44,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:20:44,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:20:44,214 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 36 states. [2020-10-29 03:20:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:45,565 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2020-10-29 03:20:45,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:20:45,565 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 160 [2020-10-29 03:20:45,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:45,567 INFO L225 Difference]: With dead ends: 173 [2020-10-29 03:20:45,567 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 03:20:45,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=665, Invalid=2091, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:20:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 03:20:45,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-10-29 03:20:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 03:20:45,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-29 03:20:45,580 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 160 [2020-10-29 03:20:45,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:45,580 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-29 03:20:45,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:20:45,581 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-29 03:20:45,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 03:20:45,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:45,583 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:45,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:20:45,584 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:45,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:45,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1163007281, now seen corresponding path program 17 times [2020-10-29 03:20:45,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:45,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879617340] [2020-10-29 03:20:45,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:45,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:45,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:45,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:45,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:50,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:50,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 03:20:50,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:50,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:20:50,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:50,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-29 03:20:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:50,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:50,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:50,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:50,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:50,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:50,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:50,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:20:50,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:50,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:50,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:50,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:50,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:50,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:50,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:50,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:50,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:50,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:50,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:20:50,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:50,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 03:20:50,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:50,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:50,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:20:50,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:50,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:20:50,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:51,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:20:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:51,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:51,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:20:51,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:51,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 03:20:51,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:51,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:51,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:20:51,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:51,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:20:51,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:51,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 03:20:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:51,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:51,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:20:51,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:51,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 03:20:51,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:51,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:20:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:20:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:51,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2974 backedges. 867 proven. 1990 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-29 03:20:51,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879617340] [2020-10-29 03:20:51,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:51,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:20:51,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542744953] [2020-10-29 03:20:51,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:20:51,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:51,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:20:51,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:20:51,692 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 38 states. [2020-10-29 03:20:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:53,110 INFO L93 Difference]: Finished difference Result 181 states and 192 transitions. [2020-10-29 03:20:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:20:53,111 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 168 [2020-10-29 03:20:53,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:53,112 INFO L225 Difference]: With dead ends: 181 [2020-10-29 03:20:53,112 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 03:20:53,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=740, Invalid=2340, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:20:53,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 03:20:53,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-29 03:20:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-29 03:20:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2020-10-29 03:20:53,121 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 168 [2020-10-29 03:20:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:53,121 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2020-10-29 03:20:53,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:20:53,121 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2020-10-29 03:20:53,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-29 03:20:53,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:53,123 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:53,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:20:53,123 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:53,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:53,126 INFO L82 PathProgramCache]: Analyzing trace with hash 322267979, now seen corresponding path program 18 times [2020-10-29 03:20:53,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:53,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13888915] [2020-10-29 03:20:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:53,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:53,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:58,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:58,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-29 03:20:58,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:58,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:20:58,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:58,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:20:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-29 03:20:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:20:58,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:58,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:58,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:58,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:58,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:58,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:58,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:58,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:58,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:58,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:58,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:58,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:58,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:58,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:58,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:20:58,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:58,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 03:20:58,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:58,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:58,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:20:58,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:58,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:20:58,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:59,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:20:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:59,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:59,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:59,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:59,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:20:59,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:59,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 03:20:59,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:59,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:20:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:59,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:20:59,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:59,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-29 03:20:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:59,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:59,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:59,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:20:59,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:59,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 03:20:59,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:59,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:20:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:20:59,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:59,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3328 backedges. 972 proven. 2233 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-29 03:20:59,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13888915] [2020-10-29 03:20:59,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:59,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:20:59,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114024161] [2020-10-29 03:20:59,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:20:59,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:59,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:20:59,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:20:59,330 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand 40 states. [2020-10-29 03:21:00,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:00,725 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2020-10-29 03:21:00,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 03:21:00,725 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 176 [2020-10-29 03:21:00,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:00,727 INFO L225 Difference]: With dead ends: 189 [2020-10-29 03:21:00,727 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 03:21:00,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=819, Invalid=2603, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:21:00,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 03:21:00,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-29 03:21:00,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 03:21:00,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-10-29 03:21:00,738 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 176 [2020-10-29 03:21:00,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:00,739 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-10-29 03:21:00,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 03:21:00,739 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-10-29 03:21:00,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 03:21:00,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:00,740 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:00,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:21:00,740 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:00,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:00,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1704525511, now seen corresponding path program 19 times [2020-10-29 03:21:00,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:00,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635725161] [2020-10-29 03:21:00,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:00,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:00,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:00,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:00,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:05,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:05,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-29 03:21:05,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:21:05,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:05,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-29 03:21:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:05,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:06,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:06,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:06,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:06,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:06,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:06,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:21:06,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:06,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:06,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:06,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:06,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:06,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:06,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:06,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:06,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:06,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:21:06,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:06,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 03:21:06,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:06,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:06,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:06,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:06,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:06,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:06,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:21:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:06,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:06,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:07,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:07,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:21:07,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:07,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 03:21:07,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:07,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:07,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:07,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:07,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:07,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 03:21:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:07,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:07,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:07,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:21:07,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:07,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 03:21:07,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:07,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:07,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:07,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3702 backedges. 1083 proven. 2490 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-29 03:21:07,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635725161] [2020-10-29 03:21:07,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:07,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 03:21:07,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221647050] [2020-10-29 03:21:07,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 03:21:07,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:07,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 03:21:07,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:21:07,161 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 42 states. [2020-10-29 03:21:08,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:08,633 INFO L93 Difference]: Finished difference Result 197 states and 208 transitions. [2020-10-29 03:21:08,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 03:21:08,634 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 184 [2020-10-29 03:21:08,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:08,635 INFO L225 Difference]: With dead ends: 197 [2020-10-29 03:21:08,635 INFO L226 Difference]: Without dead ends: 106 [2020-10-29 03:21:08,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=902, Invalid=2880, Unknown=0, NotChecked=0, Total=3782 [2020-10-29 03:21:08,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-29 03:21:08,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-29 03:21:08,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-29 03:21:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-10-29 03:21:08,645 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 184 [2020-10-29 03:21:08,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:08,645 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-10-29 03:21:08,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 03:21:08,645 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-10-29 03:21:08,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-29 03:21:08,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:08,647 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:08,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:21:08,647 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:08,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:08,648 INFO L82 PathProgramCache]: Analyzing trace with hash 444949827, now seen corresponding path program 20 times [2020-10-29 03:21:08,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:08,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210646133] [2020-10-29 03:21:08,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:08,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:08,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:08,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:08,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:13,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:13,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-29 03:21:13,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:13,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:21:13,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:13,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 03:21:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:13,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:14,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:14,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:14,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:14,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:14,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:14,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:14,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:14,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:14,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:14,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:14,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:14,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:14,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:14,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:21:14,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:14,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 03:21:14,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:14,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:14,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:14,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:14,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:21:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:14,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:14,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:14,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:14,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:21:14,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:14,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 03:21:14,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:14,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:14,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:14,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:14,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:14,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:14,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-29 03:21:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:14,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:15,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:15,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:15,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:21:15,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:15,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 03:21:15,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:15,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:15,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:15,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:15,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:15,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 1200 proven. 2761 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-29 03:21:15,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210646133] [2020-10-29 03:21:15,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:15,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 03:21:15,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894241325] [2020-10-29 03:21:15,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 03:21:15,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:15,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 03:21:15,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:21:15,149 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 44 states. [2020-10-29 03:21:16,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:16,956 INFO L93 Difference]: Finished difference Result 205 states and 216 transitions. [2020-10-29 03:21:16,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 03:21:16,960 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 192 [2020-10-29 03:21:16,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:16,961 INFO L225 Difference]: With dead ends: 205 [2020-10-29 03:21:16,961 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:21:16,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=989, Invalid=3171, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 03:21:16,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:21:16,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2020-10-29 03:21:16,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-29 03:21:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2020-10-29 03:21:16,975 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 192 [2020-10-29 03:21:16,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:16,975 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2020-10-29 03:21:16,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-29 03:21:16,975 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2020-10-29 03:21:16,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-29 03:21:16,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:16,977 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:16,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:21:16,977 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:16,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:16,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1838636735, now seen corresponding path program 21 times [2020-10-29 03:21:16,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:16,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243575752] [2020-10-29 03:21:16,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:17,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:17,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:22,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:22,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-29 03:21:22,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:22,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:21:22,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:22,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-29 03:21:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:22,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:22,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:22,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:22,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:22,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:22,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:22,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:21:22,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:22,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:22,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:22,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:22,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:22,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:22,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:22,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:22,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:22,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:22,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:21:22,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:22,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 03:21:22,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:22,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:22,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:23,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:21:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:23,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:23,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:23,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:23,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:21:23,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:23,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 03:21:23,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:23,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:23,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:23,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-29 03:21:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:23,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:23,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:23,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:23,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:21:23,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:23,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 03:21:23,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:23,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:23,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 1323 proven. 3046 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-29 03:21:23,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243575752] [2020-10-29 03:21:23,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:23,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-29 03:21:23,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529209064] [2020-10-29 03:21:23,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-29 03:21:23,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:23,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-29 03:21:23,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:21:23,631 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand 46 states. [2020-10-29 03:21:25,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:25,540 INFO L93 Difference]: Finished difference Result 213 states and 224 transitions. [2020-10-29 03:21:25,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 03:21:25,541 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 200 [2020-10-29 03:21:25,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:25,542 INFO L225 Difference]: With dead ends: 213 [2020-10-29 03:21:25,542 INFO L226 Difference]: Without dead ends: 114 [2020-10-29 03:21:25,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1080, Invalid=3476, Unknown=0, NotChecked=0, Total=4556 [2020-10-29 03:21:25,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-29 03:21:25,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-29 03:21:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-29 03:21:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-10-29 03:21:25,554 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 200 [2020-10-29 03:21:25,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:25,554 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-10-29 03:21:25,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-29 03:21:25,555 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-10-29 03:21:25,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 03:21:25,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:25,557 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:25,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:21:25,557 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:25,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:25,558 INFO L82 PathProgramCache]: Analyzing trace with hash 962308923, now seen corresponding path program 22 times [2020-10-29 03:21:25,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:25,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016987708] [2020-10-29 03:21:25,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:25,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:25,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:25,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:25,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:30,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:30,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 03:21:30,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:21:30,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:30,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-29 03:21:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:31,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:31,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:31,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:31,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:31,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:21:31,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:31,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:31,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:31,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:31,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:31,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:31,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:21:31,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:31,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 03:21:31,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:31,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:31,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:31,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:31,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:31,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:32,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:21:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:32,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:32,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:32,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:32,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:21:32,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 03:21:32,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:32,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:32,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:32,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 03:21:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:32,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:32,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:32,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:32,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:21:32,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:32,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 03:21:32,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:32,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:32,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:32,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:32,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:32,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4944 backedges. 1452 proven. 3345 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-29 03:21:32,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016987708] [2020-10-29 03:21:32,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:32,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-29 03:21:32,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810933806] [2020-10-29 03:21:32,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-29 03:21:32,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:32,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-29 03:21:32,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:21:32,483 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 48 states. [2020-10-29 03:21:34,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:34,551 INFO L93 Difference]: Finished difference Result 221 states and 232 transitions. [2020-10-29 03:21:34,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 03:21:34,552 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 208 [2020-10-29 03:21:34,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:34,553 INFO L225 Difference]: With dead ends: 221 [2020-10-29 03:21:34,554 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 03:21:34,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1175, Invalid=3795, Unknown=0, NotChecked=0, Total=4970 [2020-10-29 03:21:34,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 03:21:34,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-10-29 03:21:34,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-29 03:21:34,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2020-10-29 03:21:34,563 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 208 [2020-10-29 03:21:34,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:34,563 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2020-10-29 03:21:34,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-29 03:21:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2020-10-29 03:21:34,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-29 03:21:34,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:34,565 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:34,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:21:34,565 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:34,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:34,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1018230089, now seen corresponding path program 23 times [2020-10-29 03:21:34,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:34,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951543511] [2020-10-29 03:21:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:34,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:34,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:34,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:39,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:39,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-29 03:21:39,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:21:39,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:39,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-29 03:21:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:39,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:40,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:40,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:40,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:40,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:40,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:40,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:40,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:40,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:40,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:40,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:40,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:40,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:40,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:40,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:40,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:40,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:21:40,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:40,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-29 03:21:40,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:40,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:40,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:41,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:21:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:41,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:41,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:41,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:41,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:21:41,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:41,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 03:21:41,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:41,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:41,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:41,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:41,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:41,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:41,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-29 03:21:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:41,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:41,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:41,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:21:41,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:41,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 03:21:41,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:41,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:41,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:41,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:41,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:41,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:41,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5398 backedges. 1587 proven. 3658 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-29 03:21:41,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951543511] [2020-10-29 03:21:41,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:41,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-29 03:21:41,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862196695] [2020-10-29 03:21:41,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-29 03:21:41,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:41,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-29 03:21:41,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:21:41,620 INFO L87 Difference]: Start difference. First operand 116 states and 120 transitions. Second operand 50 states. [2020-10-29 03:21:43,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:43,838 INFO L93 Difference]: Finished difference Result 229 states and 240 transitions. [2020-10-29 03:21:43,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-29 03:21:43,839 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 216 [2020-10-29 03:21:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:43,840 INFO L225 Difference]: With dead ends: 229 [2020-10-29 03:21:43,841 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 03:21:43,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1274, Invalid=4128, Unknown=0, NotChecked=0, Total=5402 [2020-10-29 03:21:43,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 03:21:43,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2020-10-29 03:21:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-29 03:21:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2020-10-29 03:21:43,850 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 216 [2020-10-29 03:21:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:43,850 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2020-10-29 03:21:43,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-29 03:21:43,851 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2020-10-29 03:21:43,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-29 03:21:43,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:43,852 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 23, 23, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:43,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:21:43,852 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:43,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:43,853 INFO L82 PathProgramCache]: Analyzing trace with hash -2015478477, now seen corresponding path program 24 times [2020-10-29 03:21:43,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:43,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067968937] [2020-10-29 03:21:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:43,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:43,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:43,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:48,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:48,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 03:21:48,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:48,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:21:48,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:48,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 03:21:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:48,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:49,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:49,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:49,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:49,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:49,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:49,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:49,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:49,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:49,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:49,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:49,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:49,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:49,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:49,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:49,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:49,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:49,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:21:49,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:49,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 03:21:49,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:49,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:49,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:50,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:21:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:50,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:50,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:50,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:50,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:21:50,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:50,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 03:21:50,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:50,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:50,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:50,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:50,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:50,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:50,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-29 03:21:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:50,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:50,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:50,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:50,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:21:50,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:50,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 03:21:50,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:50,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:50,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:50,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:50,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:50,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:50,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5872 backedges. 1728 proven. 3985 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-29 03:21:50,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067968937] [2020-10-29 03:21:50,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:50,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-29 03:21:50,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899187550] [2020-10-29 03:21:50,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-29 03:21:50,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:50,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-29 03:21:50,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:21:50,861 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand 52 states. [2020-10-29 03:21:53,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:53,250 INFO L93 Difference]: Finished difference Result 237 states and 248 transitions. [2020-10-29 03:21:53,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-29 03:21:53,251 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 224 [2020-10-29 03:21:53,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:53,252 INFO L225 Difference]: With dead ends: 237 [2020-10-29 03:21:53,252 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 03:21:53,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1377, Invalid=4475, Unknown=0, NotChecked=0, Total=5852 [2020-10-29 03:21:53,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 03:21:53,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-29 03:21:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-29 03:21:53,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2020-10-29 03:21:53,262 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 224 [2020-10-29 03:21:53,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:53,262 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2020-10-29 03:21:53,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-29 03:21:53,262 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2020-10-29 03:21:53,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-29 03:21:53,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:53,264 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:53,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:21:53,264 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:53,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:53,265 INFO L82 PathProgramCache]: Analyzing trace with hash 107348655, now seen corresponding path program 25 times [2020-10-29 03:21:53,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:53,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721589719] [2020-10-29 03:21:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:53,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:53,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:53,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:53,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:58,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:58,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-29 03:21:58,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:21:58,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:58,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-29 03:21:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:58,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:58,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:58,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:58,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:58,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:58,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:58,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:21:58,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:58,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:58,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:58,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:58,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:58,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:58,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:59,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:59,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:21:59,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:59,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 03:21:59,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:59,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:59,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:21:59,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:59,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:21:59,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:00,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:22:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:00,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:00,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:00,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:22:00,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:00,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 03:22:00,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:00,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:00,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:22:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:22:00,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:00,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-29 03:22:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:00,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:00,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:00,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:00,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:22:00,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:00,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 03:22:00,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:00,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:00,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:22:00,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:00,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:22:00,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:00,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6366 backedges. 1875 proven. 4326 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-29 03:22:00,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721589719] [2020-10-29 03:22:00,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:00,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-29 03:22:00,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745496669] [2020-10-29 03:22:00,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-29 03:22:00,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:00,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-29 03:22:00,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 03:22:00,394 INFO L87 Difference]: Start difference. First operand 124 states and 128 transitions. Second operand 54 states. [2020-10-29 03:22:02,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:02,817 INFO L93 Difference]: Finished difference Result 245 states and 256 transitions. [2020-10-29 03:22:02,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-29 03:22:02,818 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 232 [2020-10-29 03:22:02,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:02,820 INFO L225 Difference]: With dead ends: 245 [2020-10-29 03:22:02,820 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 03:22:02,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1484, Invalid=4836, Unknown=0, NotChecked=0, Total=6320 [2020-10-29 03:22:02,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 03:22:02,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-10-29 03:22:02,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-29 03:22:02,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 132 transitions. [2020-10-29 03:22:02,828 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 132 transitions. Word has length 232 [2020-10-29 03:22:02,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:02,829 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 132 transitions. [2020-10-29 03:22:02,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-29 03:22:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 132 transitions. [2020-10-29 03:22:02,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-29 03:22:02,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:02,830 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 25, 25, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:02,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:22:02,831 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:02,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:02,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1926030549, now seen corresponding path program 26 times [2020-10-29 03:22:02,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:02,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708570270] [2020-10-29 03:22:02,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:02,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:02,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:02,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:02,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:07,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:07,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-29 03:22:07,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:22:07,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:07,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:22:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-29 03:22:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:22:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:08,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:08,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:08,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:08,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:08,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:08,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:22:08,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:08,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:08,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:08,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-29 03:22:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:08,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:08,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:08,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:08,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:22:08,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:08,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 03:22:08,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:08,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:08,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:09,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:22:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:09,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:09,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:10,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:10,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:22:10,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:10,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-29 03:22:10,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:10,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:10,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:10,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-29 03:22:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:10,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:10,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:10,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:10,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:22:10,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:10,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 03:22:10,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:10,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:10,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:10,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:10,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:10,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:22:10,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6880 backedges. 2028 proven. 4681 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-29 03:22:10,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708570270] [2020-10-29 03:22:10,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:10,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-29 03:22:10,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58143344] [2020-10-29 03:22:10,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-29 03:22:10,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:10,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-29 03:22:10,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:22:10,361 INFO L87 Difference]: Start difference. First operand 128 states and 132 transitions. Second operand 56 states. [2020-10-29 03:22:13,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:13,019 INFO L93 Difference]: Finished difference Result 253 states and 264 transitions. [2020-10-29 03:22:13,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-29 03:22:13,019 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 240 [2020-10-29 03:22:13,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:13,021 INFO L225 Difference]: With dead ends: 253 [2020-10-29 03:22:13,021 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 03:22:13,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1595, Invalid=5211, Unknown=0, NotChecked=0, Total=6806 [2020-10-29 03:22:13,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 03:22:13,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2020-10-29 03:22:13,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-29 03:22:13,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2020-10-29 03:22:13,030 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 240 [2020-10-29 03:22:13,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:13,030 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 136 transitions. [2020-10-29 03:22:13,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-29 03:22:13,030 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 136 transitions. [2020-10-29 03:22:13,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 03:22:13,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:13,032 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 26, 26, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:13,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:22:13,032 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:13,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:13,033 INFO L82 PathProgramCache]: Analyzing trace with hash 92423847, now seen corresponding path program 27 times [2020-10-29 03:22:13,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:13,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897604823] [2020-10-29 03:22:13,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:13,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:13,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:13,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:18,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:18,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 03:22:18,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:18,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:22:18,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:18,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-29 03:22:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:18,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:18,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:18,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:18,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:18,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:18,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:18,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:22:18,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:18,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:18,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:18,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:18,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:18,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:18,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:18,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:18,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:18,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:18,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:22:18,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:18,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 03:22:18,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:18,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:20,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:22:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:20,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:20,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:20,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:20,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:22:20,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:20,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 03:22:20,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:20,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:20,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:20,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:20,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:20,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:20,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-29 03:22:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:20,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:20,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:20,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:20,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:22:20,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:20,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 03:22:20,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:20,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:20,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:20,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:20,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:20,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 7414 backedges. 2187 proven. 5050 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-29 03:22:20,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897604823] [2020-10-29 03:22:20,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:20,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-29 03:22:20,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229919371] [2020-10-29 03:22:20,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-29 03:22:20,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:20,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-29 03:22:20,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 03:22:20,476 INFO L87 Difference]: Start difference. First operand 132 states and 136 transitions. Second operand 58 states. [2020-10-29 03:22:23,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:23,188 INFO L93 Difference]: Finished difference Result 261 states and 272 transitions. [2020-10-29 03:22:23,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-29 03:22:23,189 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 248 [2020-10-29 03:22:23,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:23,191 INFO L225 Difference]: With dead ends: 261 [2020-10-29 03:22:23,191 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 03:22:23,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1710, Invalid=5600, Unknown=0, NotChecked=0, Total=7310 [2020-10-29 03:22:23,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 03:22:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-10-29 03:22:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-29 03:22:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 140 transitions. [2020-10-29 03:22:23,200 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 140 transitions. Word has length 248 [2020-10-29 03:22:23,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:23,200 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 140 transitions. [2020-10-29 03:22:23,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-29 03:22:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 140 transitions. [2020-10-29 03:22:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-29 03:22:23,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:23,201 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:23,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:22:23,201 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:23,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1082112733, now seen corresponding path program 28 times [2020-10-29 03:22:23,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:23,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888674174] [2020-10-29 03:22:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:23,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:23,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:23,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:23,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:28,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:28,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-29 03:22:28,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:28,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:22:28,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:28,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:28,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:28,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 03:22:28,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:28,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:28,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:28,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:28,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:28,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:28,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:22:28,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:28,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:28,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:28,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:28,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:29,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:29,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:22:29,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:29,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 03:22:29,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:29,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:29,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:30,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 03:22:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:30,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:30,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:30,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:22:30,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:30,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 03:22:30,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:30,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:30,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:30,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-29 03:22:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:30,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:30,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:30,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:30,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:22:30,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:30,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 03:22:30,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:30,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:30,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:30,810 INFO L134 CoverageAnalysis]: Checked inductivity of 7968 backedges. 2352 proven. 5433 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-29 03:22:30,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888674174] [2020-10-29 03:22:30,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:30,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-29 03:22:30,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79809781] [2020-10-29 03:22:30,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-29 03:22:30,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:30,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-29 03:22:30,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 03:22:30,812 INFO L87 Difference]: Start difference. First operand 136 states and 140 transitions. Second operand 60 states. [2020-10-29 03:22:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:33,667 INFO L93 Difference]: Finished difference Result 269 states and 280 transitions. [2020-10-29 03:22:33,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-29 03:22:33,667 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 256 [2020-10-29 03:22:33,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:33,669 INFO L225 Difference]: With dead ends: 269 [2020-10-29 03:22:33,669 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 03:22:33,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1216 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1829, Invalid=6003, Unknown=0, NotChecked=0, Total=7832 [2020-10-29 03:22:33,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 03:22:33,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-10-29 03:22:33,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-29 03:22:33,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 144 transitions. [2020-10-29 03:22:33,678 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 144 transitions. Word has length 256 [2020-10-29 03:22:33,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:33,678 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 144 transitions. [2020-10-29 03:22:33,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-29 03:22:33,679 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 144 transitions. [2020-10-29 03:22:33,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-29 03:22:33,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:33,680 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 28, 28, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:33,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:22:33,680 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:33,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:33,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1045026463, now seen corresponding path program 29 times [2020-10-29 03:22:33,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:33,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375077270] [2020-10-29 03:22:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:33,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:33,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:33,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:33,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:38,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:38,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-29 03:22:38,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:22:38,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:38,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-29 03:22:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:39,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:39,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:39,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:39,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:39,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:39,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:39,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:39,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:39,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:39,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:39,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:39,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:39,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:39,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:39,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:39,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:39,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:22:39,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:39,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 03:22:39,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:39,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:39,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:39,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:39,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:39,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:41,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 03:22:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:41,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:41,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:41,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:41,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:22:41,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:41,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 03:22:41,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:41,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:41,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:41,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-29 03:22:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:41,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:41,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:41,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:41,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:22:41,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:41,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 03:22:41,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:41,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:41,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 8542 backedges. 2523 proven. 5830 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-29 03:22:41,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375077270] [2020-10-29 03:22:41,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:41,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-29 03:22:41,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244883382] [2020-10-29 03:22:41,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-29 03:22:41,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:41,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-29 03:22:41,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=962, Invalid=2820, Unknown=0, NotChecked=0, Total=3782 [2020-10-29 03:22:41,520 INFO L87 Difference]: Start difference. First operand 140 states and 144 transitions. Second operand 62 states. [2020-10-29 03:22:44,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:44,569 INFO L93 Difference]: Finished difference Result 277 states and 288 transitions. [2020-10-29 03:22:44,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-29 03:22:44,569 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 264 [2020-10-29 03:22:44,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:44,571 INFO L225 Difference]: With dead ends: 277 [2020-10-29 03:22:44,571 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 03:22:44,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1303 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1952, Invalid=6420, Unknown=0, NotChecked=0, Total=8372 [2020-10-29 03:22:44,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 03:22:44,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2020-10-29 03:22:44,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-29 03:22:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 148 transitions. [2020-10-29 03:22:44,580 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 148 transitions. Word has length 264 [2020-10-29 03:22:44,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:44,580 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 148 transitions. [2020-10-29 03:22:44,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-29 03:22:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 148 transitions. [2020-10-29 03:22:44,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-29 03:22:44,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:44,582 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 29, 29, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:44,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:22:44,582 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:44,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:44,583 INFO L82 PathProgramCache]: Analyzing trace with hash 65780507, now seen corresponding path program 30 times [2020-10-29 03:22:44,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:44,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866183978] [2020-10-29 03:22:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:44,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:44,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:44,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:49,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:49,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-29 03:22:49,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:49,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:22:49,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:49,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-29 03:22:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:49,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0