/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-tiling/pr4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:10:58,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:10:58,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:10:58,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:10:58,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:10:58,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:10:58,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:10:58,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:10:58,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:10:58,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:10:58,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:10:58,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:10:58,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:10:58,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:10:58,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:10:58,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:10:58,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:10:58,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:10:58,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:10:58,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:10:58,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:10:58,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:10:58,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:10:58,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:10:58,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:10:58,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:10:58,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:10:58,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:10:58,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:10:58,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:10:58,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:10:58,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:10:58,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:10:58,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:10:58,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:10:58,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:10:58,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:10:58,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:10:58,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:10:58,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:10:58,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:10:58,417 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 04:10:58,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:10:58,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:10:58,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:10:58,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:10:58,470 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:10:58,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:10:58,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:10:58,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:10:58,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:10:58,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:10:58,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:10:58,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:10:58,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:10:58,472 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:10:58,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:10:58,473 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:10:58,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:10:58,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:10:58,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:10:58,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:10:58,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:10:58,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:10:58,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:10:58,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:10:58,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:10:58,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:10:58,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:10:58,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:10:58,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:10:58,476 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:10:58,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:10:58,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:10:58,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:10:58,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:10:58,933 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:10:58,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pr4.c [2020-10-29 04:10:59,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/398a19d24/0e2dc5d0032247f5a6aeaadf0d67c404/FLAGbfacf672f [2020-10-29 04:10:59,587 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:10:59,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/pr4.c [2020-10-29 04:10:59,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/398a19d24/0e2dc5d0032247f5a6aeaadf0d67c404/FLAGbfacf672f [2020-10-29 04:10:59,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/398a19d24/0e2dc5d0032247f5a6aeaadf0d67c404 [2020-10-29 04:10:59,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:10:59,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:10:59,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:10:59,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:10:59,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:10:59,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:10:59" (1/1) ... [2020-10-29 04:10:59,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@358a40e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:10:59, skipping insertion in model container [2020-10-29 04:10:59,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:10:59" (1/1) ... [2020-10-29 04:10:59,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:11:00,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:11:00,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:11:00,250 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:11:00,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:11:00,295 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:11:00,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:00 WrapperNode [2020-10-29 04:11:00,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:11:00,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:11:00,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:11:00,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:11:00,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:00" (1/1) ... [2020-10-29 04:11:00,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:00" (1/1) ... [2020-10-29 04:11:00,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:00" (1/1) ... [2020-10-29 04:11:00,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:00" (1/1) ... [2020-10-29 04:11:00,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:00" (1/1) ... [2020-10-29 04:11:00,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:00" (1/1) ... [2020-10-29 04:11:00,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:00" (1/1) ... [2020-10-29 04:11:00,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:11:00,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:11:00,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:11:00,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:11:00,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:00" (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 04:11:00,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:11:00,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:11:00,484 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:11:00,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 04:11:00,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 04:11:00,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:11:00,485 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:11:00,485 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:11:00,485 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:11:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:11:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 04:11:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 04:11:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:11:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:11:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:11:00,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:11:00,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:11:00,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:11:00,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:11:00,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:11:00,818 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:11:00,818 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 04:11:00,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:11:00 BoogieIcfgContainer [2020-10-29 04:11:00,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:11:00,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:11:00,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:11:00,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:11:00,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:10:59" (1/3) ... [2020-10-29 04:11:00,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546cbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:11:00, skipping insertion in model container [2020-10-29 04:11:00,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:00" (2/3) ... [2020-10-29 04:11:00,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546cbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:11:00, skipping insertion in model container [2020-10-29 04:11:00,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:11:00" (3/3) ... [2020-10-29 04:11:00,830 INFO L111 eAbstractionObserver]: Analyzing ICFG pr4.c [2020-10-29 04:11:00,845 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:11:00,850 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:11:00,869 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:11:00,936 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:11:00,936 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:11:00,936 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:11:00,936 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:11:00,936 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:11:00,937 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:11:00,937 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:11:00,937 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:11:00,973 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-29 04:11:00,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 04:11:00,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:00,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:00,994 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:01,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:01,004 INFO L82 PathProgramCache]: Analyzing trace with hash 828446851, now seen corresponding path program 1 times [2020-10-29 04:11:01,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:01,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958103708] [2020-10-29 04:11:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:01,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:01,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:01,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:01,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:01,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:11:01,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:11:01,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 796 [2020-10-29 04:11:01,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:01,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:11:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 04:11:01,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:01,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:11:02,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:02,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:02,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:02,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:02,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:02,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:11:02,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:02,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:02,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:02,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:02,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:02,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:02,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:02,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:02,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:02,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:02,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:11:02,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:11:02,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:02,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 04:11:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:02,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:02,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958103708] [2020-10-29 04:11:02,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:11:02,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:11:02,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722930446] [2020-10-29 04:11:02,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:11:02,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:02,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:11:02,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:11:02,254 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2020-10-29 04:11:02,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:02,550 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2020-10-29 04:11:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:11:02,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-29 04:11:02,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:02,561 INFO L225 Difference]: With dead ends: 76 [2020-10-29 04:11:02,561 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 04:11:02,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:11:02,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 04:11:02,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-29 04:11:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 04:11:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-29 04:11:02,615 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 23 [2020-10-29 04:11:02,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:02,616 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-29 04:11:02,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:11:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-29 04:11:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 04:11:02,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:02,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:02,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:11:02,618 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:02,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:02,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1175471014, now seen corresponding path program 1 times [2020-10-29 04:11:02,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:02,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343840536] [2020-10-29 04:11:02,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:02,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:02,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:02,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:03,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:03,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:11:03,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:11:03,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 796 [2020-10-29 04:11:03,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:03,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:11:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:11:03,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:03,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:03,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:03,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:03,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:03,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:03,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:11:03,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:03,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:03,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:03,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:03,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:03,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:03,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:03,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:03,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:03,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:03,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:03,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:11:03,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:03,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:03,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:03,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:03,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:03,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:03,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343840536] [2020-10-29 04:11:03,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:11:03,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:11:03,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582491830] [2020-10-29 04:11:03,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:11:03,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:03,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:11:03,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:11:03,586 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 6 states. [2020-10-29 04:11:03,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:03,792 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2020-10-29 04:11:03,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:11:03,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-29 04:11:03,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:03,798 INFO L225 Difference]: With dead ends: 68 [2020-10-29 04:11:03,798 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 04:11:03,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:11:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 04:11:03,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2020-10-29 04:11:03,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 04:11:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-29 04:11:03,815 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 23 [2020-10-29 04:11:03,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:03,816 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-29 04:11:03,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:11:03,816 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-29 04:11:03,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 04:11:03,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:03,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:03,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:11:03,818 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:03,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:03,819 INFO L82 PathProgramCache]: Analyzing trace with hash -151778185, now seen corresponding path program 1 times [2020-10-29 04:11:03,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:03,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719103441] [2020-10-29 04:11:03,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:03,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:03,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:04,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:04,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:04,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 04:11:04,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:11:04,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-29 04:11:04,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:04,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:11:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:04,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 04:11:04,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:04,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:04,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:04,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:04,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:04,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:04,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:11:04,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:04,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:04,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:04,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:04,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:04,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:04,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:04,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:04,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:11:04,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:04,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:04,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719103441] [2020-10-29 04:11:04,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:11:04,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 04:11:04,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244374669] [2020-10-29 04:11:04,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:11:04,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:04,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:11:04,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:11:04,571 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states. [2020-10-29 04:11:04,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:04,736 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2020-10-29 04:11:04,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:11:04,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-29 04:11:04,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:04,738 INFO L225 Difference]: With dead ends: 76 [2020-10-29 04:11:04,738 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 04:11:04,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:11:04,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 04:11:04,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2020-10-29 04:11:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 04:11:04,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-10-29 04:11:04,751 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 29 [2020-10-29 04:11:04,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:04,752 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-10-29 04:11:04,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:11:04,752 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-10-29 04:11:04,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 04:11:04,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:04,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:04,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:11:04,754 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:04,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:04,754 INFO L82 PathProgramCache]: Analyzing trace with hash 106387253, now seen corresponding path program 1 times [2020-10-29 04:11:04,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:04,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11670821] [2020-10-29 04:11:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:04,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:04,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:05,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:05,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:05,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 04:11:05,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:11:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-29 04:11:05,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:05,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:11:05,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:05,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:11:05,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:05,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:05,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:05,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:05,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:05,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:05,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:05,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:05,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:05,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:05,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:05,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:05,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:05,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:05,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:05,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:05,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:05,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:05,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:11:05,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:05,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:05,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:05,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11670821] [2020-10-29 04:11:05,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:11:05,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 04:11:05,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348956534] [2020-10-29 04:11:05,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:11:05,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:05,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:11:05,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:11:05,392 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 5 states. [2020-10-29 04:11:05,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:05,558 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2020-10-29 04:11:05,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:11:05,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-29 04:11:05,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:05,560 INFO L225 Difference]: With dead ends: 76 [2020-10-29 04:11:05,560 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 04:11:05,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:11:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 04:11:05,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2020-10-29 04:11:05,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 04:11:05,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-29 04:11:05,571 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 29 [2020-10-29 04:11:05,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:05,571 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-29 04:11:05,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:11:05,572 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-29 04:11:05,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 04:11:05,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:05,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:05,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:11:05,573 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:05,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:05,574 INFO L82 PathProgramCache]: Analyzing trace with hash 807451831, now seen corresponding path program 1 times [2020-10-29 04:11:05,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:05,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997401419] [2020-10-29 04:11:05,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:05,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:05,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:05,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 04:11:05,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:05,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-29 04:11:05,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:05,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:05,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:11:05,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:11:05,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:11:05,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:06,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:06,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:06,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:06,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:06,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:06,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:06,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:06,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:06,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:06,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:06,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:06,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:06,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:06,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:06,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:06,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:06,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:06,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:06,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:06,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:06,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:06,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997401419] [2020-10-29 04:11:06,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:06,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:11:06,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001358262] [2020-10-29 04:11:06,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:11:06,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:06,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:11:06,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:11:06,063 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 10 states. [2020-10-29 04:11:06,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:06,592 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2020-10-29 04:11:06,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 04:11:06,593 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-29 04:11:06,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:06,595 INFO L225 Difference]: With dead ends: 88 [2020-10-29 04:11:06,595 INFO L226 Difference]: Without dead ends: 85 [2020-10-29 04:11:06,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:11:06,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-29 04:11:06,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 55. [2020-10-29 04:11:06,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 04:11:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2020-10-29 04:11:06,609 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 29 [2020-10-29 04:11:06,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:06,609 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2020-10-29 04:11:06,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:11:06,609 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2020-10-29 04:11:06,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 04:11:06,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:06,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:06,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:11:06,611 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:06,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:06,612 INFO L82 PathProgramCache]: Analyzing trace with hash 859339065, now seen corresponding path program 1 times [2020-10-29 04:11:06,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:06,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287166390] [2020-10-29 04:11:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:06,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:06,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:06,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 04:11:06,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:06,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-29 04:11:06,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:06,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:06,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:11:06,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:11:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:11:06,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:06,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:06,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:06,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:06,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:06,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:06,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:06,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:06,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:06,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:06,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:06,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:06,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:06,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:06,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:06,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:06,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:06,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:06,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:06,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:06,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:06,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287166390] [2020-10-29 04:11:06,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:06,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:11:06,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102201148] [2020-10-29 04:11:06,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:11:06,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:06,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:11:06,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:11:06,951 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. Second operand 8 states. [2020-10-29 04:11:07,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:07,288 INFO L93 Difference]: Finished difference Result 101 states and 128 transitions. [2020-10-29 04:11:07,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:11:07,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-29 04:11:07,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:07,291 INFO L225 Difference]: With dead ends: 101 [2020-10-29 04:11:07,291 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 04:11:07,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:11:07,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 04:11:07,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 58. [2020-10-29 04:11:07,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 04:11:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2020-10-29 04:11:07,303 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 29 [2020-10-29 04:11:07,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:07,303 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2020-10-29 04:11:07,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:11:07,304 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2020-10-29 04:11:07,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 04:11:07,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:07,305 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:07,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:11:07,305 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:07,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:07,306 INFO L82 PathProgramCache]: Analyzing trace with hash -541011510, now seen corresponding path program 1 times [2020-10-29 04:11:07,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:07,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420606358] [2020-10-29 04:11:07,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:07,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:07,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:07,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 04:11:07,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:07,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 04:11:07,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:07,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 04:11:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:11:07,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:07,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:07,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:07,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:07,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:07,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:07,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:07,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:07,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:07,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:07,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:07,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:07,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:07,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:07,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:07,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:07,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:07,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:07,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:07,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:07,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:07,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:07,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:07,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420606358] [2020-10-29 04:11:07,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:11:07,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:11:07,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075473197] [2020-10-29 04:11:07,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:11:07,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:07,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:11:07,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:11:07,446 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 4 states. [2020-10-29 04:11:07,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:07,551 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2020-10-29 04:11:07,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:11:07,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-29 04:11:07,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:07,553 INFO L225 Difference]: With dead ends: 88 [2020-10-29 04:11:07,553 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 04:11:07,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 04:11:07,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 04:11:07,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-10-29 04:11:07,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 04:11:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2020-10-29 04:11:07,564 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 35 [2020-10-29 04:11:07,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:07,564 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2020-10-29 04:11:07,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:11:07,564 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2020-10-29 04:11:07,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 04:11:07,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:07,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:07,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:11:07,583 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:07,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:07,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1446954998, now seen corresponding path program 1 times [2020-10-29 04:11:07,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:07,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306337158] [2020-10-29 04:11:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:07,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:07,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:07,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:07,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:07,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:07,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:08,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:08,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 04:11:08,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:11:08,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-29 04:11:08,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:08,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:08,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:11:08,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:08,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:11:08,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:08,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:08,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:08,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:08,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:08,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:08,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:08,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:08,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:08,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:08,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:08,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:08,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:08,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:08,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:08,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:08,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:08,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:08,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:08,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306337158] [2020-10-29 04:11:08,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:08,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:11:08,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649602877] [2020-10-29 04:11:08,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:11:08,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:08,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:11:08,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:11:08,154 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand 5 states. [2020-10-29 04:11:08,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:08,290 INFO L93 Difference]: Finished difference Result 97 states and 120 transitions. [2020-10-29 04:11:08,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:11:08,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-29 04:11:08,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:08,292 INFO L225 Difference]: With dead ends: 97 [2020-10-29 04:11:08,292 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 04:11:08,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:11:08,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 04:11:08,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2020-10-29 04:11:08,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-29 04:11:08,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2020-10-29 04:11:08,303 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 35 [2020-10-29 04:11:08,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:08,303 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2020-10-29 04:11:08,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:11:08,303 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2020-10-29 04:11:08,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 04:11:08,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:08,305 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:08,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:11:08,305 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:08,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:08,306 INFO L82 PathProgramCache]: Analyzing trace with hash 853867592, now seen corresponding path program 1 times [2020-10-29 04:11:08,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:08,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318143191] [2020-10-29 04:11:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:08,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:08,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:08,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:08,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:08,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:08,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:08,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 04:11:08,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:11:08,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-29 04:11:08,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:08,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:08,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:11:08,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:08,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:11:08,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:08,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:08,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:08,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:08,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:08,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:08,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:08,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:08,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:08,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:08,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:08,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:08,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:08,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:08,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:08,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:08,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:08,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:08,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:08,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:08,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:11:08,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318143191] [2020-10-29 04:11:08,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:11:08,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 04:11:08,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325479165] [2020-10-29 04:11:08,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:11:08,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:08,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:11:08,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:11:08,997 INFO L87 Difference]: Start difference. First operand 64 states and 80 transitions. Second operand 5 states. [2020-10-29 04:11:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:09,204 INFO L93 Difference]: Finished difference Result 122 states and 160 transitions. [2020-10-29 04:11:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:11:09,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-29 04:11:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:09,206 INFO L225 Difference]: With dead ends: 122 [2020-10-29 04:11:09,206 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 04:11:09,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:11:09,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 04:11:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 72. [2020-10-29 04:11:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 04:11:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2020-10-29 04:11:09,218 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 35 [2020-10-29 04:11:09,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:09,218 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2020-10-29 04:11:09,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:11:09,219 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2020-10-29 04:11:09,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 04:11:09,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:09,220 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:09,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:11:09,220 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:09,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:09,221 INFO L82 PathProgramCache]: Analyzing trace with hash -734480310, now seen corresponding path program 2 times [2020-10-29 04:11:09,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:09,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326660435] [2020-10-29 04:11:09,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:09,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:09,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:09,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 04:11:09,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:09,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 04:11:09,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:09,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 04:11:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:11:09,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:09,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:09,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:09,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:09,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:09,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:09,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:09,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:09,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:09,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:09,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:09,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:09,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:09,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:09,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:09,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:09,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:09,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:09,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:09,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:09,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:09,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326660435] [2020-10-29 04:11:09,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:11:09,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:11:09,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572657017] [2020-10-29 04:11:09,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:11:09,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:09,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:11:09,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:11:09,387 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand 4 states. [2020-10-29 04:11:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:09,500 INFO L93 Difference]: Finished difference Result 95 states and 119 transitions. [2020-10-29 04:11:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:11:09,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-29 04:11:09,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:09,502 INFO L225 Difference]: With dead ends: 95 [2020-10-29 04:11:09,502 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 04:11:09,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 04:11:09,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 04:11:09,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 57. [2020-10-29 04:11:09,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 04:11:09,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2020-10-29 04:11:09,512 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 35 [2020-10-29 04:11:09,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:09,512 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2020-10-29 04:11:09,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:11:09,512 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2020-10-29 04:11:09,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 04:11:09,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:09,513 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:09,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:11:09,514 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:09,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:09,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1707503737, now seen corresponding path program 1 times [2020-10-29 04:11:09,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:09,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769242194] [2020-10-29 04:11:09,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:09,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:09,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:09,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:11,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:11,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 04:11:11,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:11:11,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1605 [2020-10-29 04:11:11,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:11,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:11,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:11:11,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:11:11,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:11:11,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:11,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:11,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:11,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:11,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:11,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:11,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:11,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:11,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:11,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:11,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:11,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:11,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:11,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:11,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:11,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:11,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:11,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:11,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:11,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:11,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:11,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:11,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:11,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:11:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:11,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:11,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:11,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:11,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:11,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:11,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:11,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:11,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:11,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:11,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:11,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:11,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769242194] [2020-10-29 04:11:11,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:11,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:11:11,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433936840] [2020-10-29 04:11:11,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:11:11,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:11,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:11:11,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:11:11,318 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand 9 states. [2020-10-29 04:11:11,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:11,805 INFO L93 Difference]: Finished difference Result 153 states and 198 transitions. [2020-10-29 04:11:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 04:11:11,806 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-29 04:11:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:11,808 INFO L225 Difference]: With dead ends: 153 [2020-10-29 04:11:11,808 INFO L226 Difference]: Without dead ends: 136 [2020-10-29 04:11:11,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:11:11,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-29 04:11:11,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 84. [2020-10-29 04:11:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 04:11:11,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2020-10-29 04:11:11,820 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 38 [2020-10-29 04:11:11,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:11,820 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2020-10-29 04:11:11,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:11:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2020-10-29 04:11:11,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 04:11:11,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:11,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:11,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:11:11,823 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:11,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:11,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1488649019, now seen corresponding path program 1 times [2020-10-29 04:11:11,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:11,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183469124] [2020-10-29 04:11:11,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:11,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:11,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:11,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:12,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:12,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:15,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:15,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 04:11:15,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:11:15,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3197 [2020-10-29 04:11:15,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:15,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:15,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:11:15,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:15,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 04:11:15,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:15,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:15,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:15,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:15,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:15,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:15,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:11:15,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:15,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:15,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:15,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:15,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:15,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:15,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:15,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:15,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:15,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:15,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:15,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:15,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:15,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:15,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:15,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:11:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:15,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:15,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:15,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:15,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:15,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:15,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:15,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:15,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:15,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:15,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:15,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:11:15,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183469124] [2020-10-29 04:11:15,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:15,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:11:15,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994863138] [2020-10-29 04:11:15,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:11:15,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:15,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:11:15,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:11:15,376 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand 10 states. [2020-10-29 04:11:15,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:15,884 INFO L93 Difference]: Finished difference Result 137 states and 174 transitions. [2020-10-29 04:11:15,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:11:15,885 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-29 04:11:15,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:15,886 INFO L225 Difference]: With dead ends: 137 [2020-10-29 04:11:15,886 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 04:11:15,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:11:15,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 04:11:15,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 94. [2020-10-29 04:11:15,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-29 04:11:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2020-10-29 04:11:15,899 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 38 [2020-10-29 04:11:15,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:15,900 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2020-10-29 04:11:15,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:11:15,900 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2020-10-29 04:11:15,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 04:11:15,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:15,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:15,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:11:15,902 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:15,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:15,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1526454599, now seen corresponding path program 1 times [2020-10-29 04:11:15,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:15,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794613065] [2020-10-29 04:11:15,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:15,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:16,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:16,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 04:11:16,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:16,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 04:11:16,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:16,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:11:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:11:16,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:11:16,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:16,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:16,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:16,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:16,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:16,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:16,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:11:16,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:16,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:16,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:16,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:16,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:16,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:16,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:16,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:16,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:16,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:16,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:16,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:16,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:16,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:16,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:16,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:11:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:16,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:16,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:16,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:16,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:16,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:16,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:16,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:16,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:16,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:16,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:16,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794613065] [2020-10-29 04:11:16,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:16,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:11:16,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964835608] [2020-10-29 04:11:16,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:11:16,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:16,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:11:16,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:11:16,349 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand 11 states. [2020-10-29 04:11:17,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:17,109 INFO L93 Difference]: Finished difference Result 196 states and 254 transitions. [2020-10-29 04:11:17,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 04:11:17,109 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-29 04:11:17,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:17,111 INFO L225 Difference]: With dead ends: 196 [2020-10-29 04:11:17,112 INFO L226 Difference]: Without dead ends: 193 [2020-10-29 04:11:17,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:11:17,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-29 04:11:17,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 129. [2020-10-29 04:11:17,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-29 04:11:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 167 transitions. [2020-10-29 04:11:17,139 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 167 transitions. Word has length 38 [2020-10-29 04:11:17,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:17,139 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 167 transitions. [2020-10-29 04:11:17,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:11:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 167 transitions. [2020-10-29 04:11:17,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 04:11:17,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:17,142 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:17,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:11:17,142 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:17,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:17,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1203971988, now seen corresponding path program 1 times [2020-10-29 04:11:17,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:17,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685798024] [2020-10-29 04:11:17,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:17,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:17,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:17,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 04:11:17,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:17,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 04:11:17,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:17,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 04:11:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:11:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:17,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:17,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:17,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:17,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:17,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:17,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:17,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:17,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:17,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:17,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:17,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:17,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:17,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:17,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:17,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:17,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:17,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:17,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:17,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:17,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:17,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:17,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:11:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:17,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:17,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:17,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:17,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:17,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:17,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:17,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:17,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:17,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:17,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:17,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:11:17,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685798024] [2020-10-29 04:11:17,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:11:17,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:11:17,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918861837] [2020-10-29 04:11:17,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:11:17,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:17,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:11:17,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:11:17,331 INFO L87 Difference]: Start difference. First operand 129 states and 167 transitions. Second operand 4 states. [2020-10-29 04:11:17,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:17,451 INFO L93 Difference]: Finished difference Result 176 states and 227 transitions. [2020-10-29 04:11:17,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:11:17,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-29 04:11:17,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:17,453 INFO L225 Difference]: With dead ends: 176 [2020-10-29 04:11:17,453 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 04:11:17,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 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 04:11:17,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 04:11:17,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2020-10-29 04:11:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-29 04:11:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2020-10-29 04:11:17,479 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 44 [2020-10-29 04:11:17,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:17,479 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2020-10-29 04:11:17,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:11:17,479 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2020-10-29 04:11:17,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 04:11:17,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:17,480 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:17,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:11:17,481 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:17,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:17,481 INFO L82 PathProgramCache]: Analyzing trace with hash -804219498, now seen corresponding path program 1 times [2020-10-29 04:11:17,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:17,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429723883] [2020-10-29 04:11:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:17,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:17,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:17,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 04:11:17,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:17,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 04:11:17,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:17,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 04:11:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:11:17,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:17,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:17,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:17,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:17,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:17,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:17,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:17,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:17,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:17,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:17,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:17,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:17,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:17,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:17,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:17,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:17,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:17,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:17,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:17,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:11:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:17,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:17,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:17,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:17,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:17,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:17,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:17,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:17,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:17,651 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:11:17,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429723883] [2020-10-29 04:11:17,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:11:17,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:11:17,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764256785] [2020-10-29 04:11:17,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:11:17,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:17,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:11:17,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:11:17,653 INFO L87 Difference]: Start difference. First operand 120 states and 149 transitions. Second operand 4 states. [2020-10-29 04:11:17,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:17,777 INFO L93 Difference]: Finished difference Result 145 states and 178 transitions. [2020-10-29 04:11:17,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:11:17,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-29 04:11:17,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:17,779 INFO L225 Difference]: With dead ends: 145 [2020-10-29 04:11:17,779 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 04:11:17,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 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 04:11:17,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 04:11:17,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2020-10-29 04:11:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-29 04:11:17,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 118 transitions. [2020-10-29 04:11:17,794 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 118 transitions. Word has length 44 [2020-10-29 04:11:17,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:17,794 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 118 transitions. [2020-10-29 04:11:17,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:11:17,795 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 118 transitions. [2020-10-29 04:11:17,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 04:11:17,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:17,796 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:17,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:11:17,796 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:17,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:17,797 INFO L82 PathProgramCache]: Analyzing trace with hash -979835209, now seen corresponding path program 2 times [2020-10-29 04:11:17,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:17,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796673416] [2020-10-29 04:11:17,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:17,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:17,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:19,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:21,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:21,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 04:11:21,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:11:21,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3938 [2020-10-29 04:11:21,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:21,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:21,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:11:21,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:11:21,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 04:11:21,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:21,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:21,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:21,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:21,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:21,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:11:21,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:21,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:21,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:21,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:21,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:21,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:21,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:21,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:21,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:21,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:21,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:21,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:21,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:21,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:21,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:21,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:11:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:21,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:21,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:21,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:21,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:21,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:21,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:21,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:21,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:21,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 04:11:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:21,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:21,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:21,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:21,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:21,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:21,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:21,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:21,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:11:21,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796673416] [2020-10-29 04:11:21,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:21,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 04:11:21,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644958729] [2020-10-29 04:11:21,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 04:11:21,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:21,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 04:11:21,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:11:21,959 INFO L87 Difference]: Start difference. First operand 98 states and 118 transitions. Second operand 12 states. [2020-10-29 04:11:22,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:22,919 INFO L93 Difference]: Finished difference Result 253 states and 310 transitions. [2020-10-29 04:11:22,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 04:11:22,922 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-29 04:11:22,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:22,925 INFO L225 Difference]: With dead ends: 253 [2020-10-29 04:11:22,925 INFO L226 Difference]: Without dead ends: 250 [2020-10-29 04:11:22,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2020-10-29 04:11:22,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-29 04:11:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 145. [2020-10-29 04:11:22,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-29 04:11:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 178 transitions. [2020-10-29 04:11:22,952 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 178 transitions. Word has length 47 [2020-10-29 04:11:22,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:22,952 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 178 transitions. [2020-10-29 04:11:22,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 04:11:22,953 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 178 transitions. [2020-10-29 04:11:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 04:11:22,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:22,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:22,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 04:11:22,954 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:22,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:22,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1631536825, now seen corresponding path program 1 times [2020-10-29 04:11:22,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:22,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285078589] [2020-10-29 04:11:22,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:22,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:23,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:23,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 04:11:23,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:23,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 04:11:23,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:23,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:23,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:11:23,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:11:23,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:11:23,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:23,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:23,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:23,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:23,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:23,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:23,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:23,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:23,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:23,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:23,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:23,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:23,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:23,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:23,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:23,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:23,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:23,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:23,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:23,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:23,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:23,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:23,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:23,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:23,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:23,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:11:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:23,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:23,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:23,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:23,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:23,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:23,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:23,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:23,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:23,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 04:11:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:23,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:23,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:23,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:23,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:23,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:23,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:23,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:23,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:23,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:23,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:23,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:11:23,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285078589] [2020-10-29 04:11:23,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:23,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:11:23,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091379711] [2020-10-29 04:11:23,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:11:23,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:23,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:11:23,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:11:23,342 INFO L87 Difference]: Start difference. First operand 145 states and 178 transitions. Second operand 10 states. [2020-10-29 04:11:24,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:24,018 INFO L93 Difference]: Finished difference Result 242 states and 298 transitions. [2020-10-29 04:11:24,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 04:11:24,019 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-29 04:11:24,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:24,021 INFO L225 Difference]: With dead ends: 242 [2020-10-29 04:11:24,021 INFO L226 Difference]: Without dead ends: 225 [2020-10-29 04:11:24,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:11:24,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-29 04:11:24,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 160. [2020-10-29 04:11:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-29 04:11:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 197 transitions. [2020-10-29 04:11:24,057 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 197 transitions. Word has length 47 [2020-10-29 04:11:24,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:24,057 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 197 transitions. [2020-10-29 04:11:24,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:11:24,057 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 197 transitions. [2020-10-29 04:11:24,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 04:11:24,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:24,059 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:24,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 04:11:24,059 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:24,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:24,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1844587636, now seen corresponding path program 1 times [2020-10-29 04:11:24,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:24,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308755861] [2020-10-29 04:11:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:24,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:24,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:24,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:24,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 04:11:24,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:11:24,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-29 04:11:24,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:24,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:11:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 04:11:24,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:24,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:24,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:24,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:24,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:24,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:24,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:24,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:24,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:24,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:24,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:24,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:24,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:24,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:24,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:24,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:24,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:24,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:24,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:24,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:24,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:24,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:24,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:11:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:24,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:24,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:24,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:24,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:24,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:24,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:24,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:24,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:24,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:11:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:24,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:24,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:24,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:24,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:24,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:24,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:24,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:24,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:24,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:24,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:24,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 04:11:24,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308755861] [2020-10-29 04:11:24,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:24,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:11:24,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531997518] [2020-10-29 04:11:24,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:11:24,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:24,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:11:24,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:11:24,378 INFO L87 Difference]: Start difference. First operand 160 states and 197 transitions. Second operand 5 states. [2020-10-29 04:11:24,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:24,532 INFO L93 Difference]: Finished difference Result 250 states and 309 transitions. [2020-10-29 04:11:24,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:11:24,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-29 04:11:24,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:24,535 INFO L225 Difference]: With dead ends: 250 [2020-10-29 04:11:24,535 INFO L226 Difference]: Without dead ends: 200 [2020-10-29 04:11:24,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:11:24,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-29 04:11:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 172. [2020-10-29 04:11:24,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-29 04:11:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 213 transitions. [2020-10-29 04:11:24,563 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 213 transitions. Word has length 53 [2020-10-29 04:11:24,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:24,563 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 213 transitions. [2020-10-29 04:11:24,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:11:24,564 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 213 transitions. [2020-10-29 04:11:24,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 04:11:24,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:24,565 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:24,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 04:11:24,565 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:24,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:24,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1606374158, now seen corresponding path program 1 times [2020-10-29 04:11:24,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:24,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175890114] [2020-10-29 04:11:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:24,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:24,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:24,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 04:11:24,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:24,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 04:11:24,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:24,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:24,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 04:11:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:11:24,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:24,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:24,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:24,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:24,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:24,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:24,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:24,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:24,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:24,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:24,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:24,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:24,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:24,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:24,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:24,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:24,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:24,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:24,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:11:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:24,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:24,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:24,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:24,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:24,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:24,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:24,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:24,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:24,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:11:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:24,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:24,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:24,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:24,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:24,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:24,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:24,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 04:11:24,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175890114] [2020-10-29 04:11:24,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:11:24,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:11:24,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571204490] [2020-10-29 04:11:24,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:11:24,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:24,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:11:24,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:11:24,726 INFO L87 Difference]: Start difference. First operand 172 states and 213 transitions. Second operand 4 states. [2020-10-29 04:11:24,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:24,852 INFO L93 Difference]: Finished difference Result 228 states and 280 transitions. [2020-10-29 04:11:24,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:11:24,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-29 04:11:24,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:24,854 INFO L225 Difference]: With dead ends: 228 [2020-10-29 04:11:24,855 INFO L226 Difference]: Without dead ends: 178 [2020-10-29 04:11:24,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:11:24,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-29 04:11:24,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 160. [2020-10-29 04:11:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-29 04:11:24,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 193 transitions. [2020-10-29 04:11:24,880 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 193 transitions. Word has length 53 [2020-10-29 04:11:24,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:24,880 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 193 transitions. [2020-10-29 04:11:24,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:11:24,881 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 193 transitions. [2020-10-29 04:11:24,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 04:11:24,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:24,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:24,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 04:11:24,883 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:24,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:24,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1189375118, now seen corresponding path program 2 times [2020-10-29 04:11:24,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:24,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958519208] [2020-10-29 04:11:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:24,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:24,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:24,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 04:11:24,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:24,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 04:11:24,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:24,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 04:11:24,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:11:24,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:24,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:24,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:24,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:24,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:24,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:24,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:11:24,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:24,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:24,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:24,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:24,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:24,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:25,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:25,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:25,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:25,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:25,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:25,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:25,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:25,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:25,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:25,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:11:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:25,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:25,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:25,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:25,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:25,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:25,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:25,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:25,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:25,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:25,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:25,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:25,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:11:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:25,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:25,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:25,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:25,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:25,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:25,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:25,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:25,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:25,022 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 04:11:25,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958519208] [2020-10-29 04:11:25,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:11:25,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:11:25,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445331983] [2020-10-29 04:11:25,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:11:25,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:25,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:11:25,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:11:25,024 INFO L87 Difference]: Start difference. First operand 160 states and 193 transitions. Second operand 4 states. [2020-10-29 04:11:25,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:25,137 INFO L93 Difference]: Finished difference Result 196 states and 233 transitions. [2020-10-29 04:11:25,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:11:25,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-29 04:11:25,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:25,138 INFO L225 Difference]: With dead ends: 196 [2020-10-29 04:11:25,139 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 04:11:25,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:11:25,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 04:11:25,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 138. [2020-10-29 04:11:25,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-29 04:11:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 164 transitions. [2020-10-29 04:11:25,159 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 164 transitions. Word has length 53 [2020-10-29 04:11:25,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:25,160 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 164 transitions. [2020-10-29 04:11:25,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:11:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 164 transitions. [2020-10-29 04:11:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 04:11:25,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:25,161 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:25,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 04:11:25,161 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:25,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:25,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1202674297, now seen corresponding path program 3 times [2020-10-29 04:11:25,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:25,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117406313] [2020-10-29 04:11:25,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:25,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:25,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:25,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:25,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:25,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:25,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:25,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:25,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:29,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:30,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:30,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 04:11:30,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:11:30,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:11:30,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:30,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:30,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:11:30,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:30,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 04:11:30,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:30,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:30,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:30,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:30,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:30,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:30,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:30,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:30,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:30,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:30,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:30,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:30,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:30,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:30,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:11:30,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:30,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:30,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:30,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:11:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:30,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:30,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:30,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:30,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:30,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:30,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:30,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:30,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:30,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 04:11:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:30,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:30,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:30,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:30,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:30,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:30,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:30,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:30,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:30,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:11:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:30,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:30,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:30,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:30,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:30,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:30,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:30,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 04:11:30,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117406313] [2020-10-29 04:11:30,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:30,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:11:30,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851457221] [2020-10-29 04:11:30,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:11:30,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:30,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:11:30,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:11:30,401 INFO L87 Difference]: Start difference. First operand 138 states and 164 transitions. Second operand 11 states. [2020-10-29 04:11:31,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:31,105 INFO L93 Difference]: Finished difference Result 227 states and 267 transitions. [2020-10-29 04:11:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:11:31,107 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-29 04:11:31,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:31,109 INFO L225 Difference]: With dead ends: 227 [2020-10-29 04:11:31,109 INFO L226 Difference]: Without dead ends: 210 [2020-10-29 04:11:31,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:11:31,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-29 04:11:31,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 138. [2020-10-29 04:11:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-29 04:11:31,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2020-10-29 04:11:31,132 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 56 [2020-10-29 04:11:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:31,133 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2020-10-29 04:11:31,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:11:31,134 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2020-10-29 04:11:31,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 04:11:31,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:31,142 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1] [2020-10-29 04:11:31,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 04:11:31,143 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:31,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:31,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1812429321, now seen corresponding path program 4 times [2020-10-29 04:11:31,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:31,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343336046] [2020-10-29 04:11:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:31,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:31,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:31,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:31,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:31,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:32,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:32,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:32,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:33,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:36,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:36,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 04:11:36,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:11:36,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:11:36,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:36,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:36,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:11:36,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:11:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 04:11:36,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:36,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:36,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:36,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:36,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:36,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:36,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:36,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:36,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:36,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:36,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:36,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:36,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:36,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:36,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:36,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:36,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:36,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:36,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:36,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:36,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:36,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:36,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:11:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:36,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:36,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:36,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:36,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:36,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:36,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:36,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:36,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:36,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 04:11:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:36,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:36,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:36,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:36,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:36,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:36,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:36,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:36,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:36,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:11:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:36,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:36,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:36,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:36,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:36,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:36,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:36,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:36,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 04:11:36,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343336046] [2020-10-29 04:11:36,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:36,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 04:11:36,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828261068] [2020-10-29 04:11:36,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 04:11:36,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:36,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 04:11:36,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:11:36,353 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand 12 states. [2020-10-29 04:11:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:37,415 INFO L93 Difference]: Finished difference Result 278 states and 330 transitions. [2020-10-29 04:11:37,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 04:11:37,420 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2020-10-29 04:11:37,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:37,422 INFO L225 Difference]: With dead ends: 278 [2020-10-29 04:11:37,425 INFO L226 Difference]: Without dead ends: 275 [2020-10-29 04:11:37,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2020-10-29 04:11:37,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-29 04:11:37,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 182. [2020-10-29 04:11:37,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-29 04:11:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 218 transitions. [2020-10-29 04:11:37,459 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 218 transitions. Word has length 56 [2020-10-29 04:11:37,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:37,460 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 218 transitions. [2020-10-29 04:11:37,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 04:11:37,460 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 218 transitions. [2020-10-29 04:11:37,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 04:11:37,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:37,461 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:37,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 04:11:37,462 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:37,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:37,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1248405445, now seen corresponding path program 2 times [2020-10-29 04:11:37,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:37,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143648113] [2020-10-29 04:11:37,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:37,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:37,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:37,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 04:11:37,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:37,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-29 04:11:37,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:37,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:11:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:11:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 04:11:37,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:37,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:37,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:37,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:37,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:37,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:37,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:37,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:37,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:37,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:37,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:37,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:37,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:37,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:37,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:37,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:37,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:37,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:37,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:37,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:37,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:37,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:37,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:11:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:37,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:37,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:37,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:37,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:37,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:37,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:37,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:37,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 04:11:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:37,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:37,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:37,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:37,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:37,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:11:37,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:37,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:37,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:37,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:37,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:11:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:37,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:37,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:37,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:37,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:37,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:37,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:37,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:37,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:37,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:37,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:37,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 04:11:37,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143648113] [2020-10-29 04:11:37,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:37,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:11:37,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066135062] [2020-10-29 04:11:37,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:11:37,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:37,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:11:37,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:11:37,871 INFO L87 Difference]: Start difference. First operand 182 states and 218 transitions. Second operand 10 states. [2020-10-29 04:11:38,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:38,764 INFO L93 Difference]: Finished difference Result 321 states and 388 transitions. [2020-10-29 04:11:38,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 04:11:38,765 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-29 04:11:38,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:38,768 INFO L225 Difference]: With dead ends: 321 [2020-10-29 04:11:38,768 INFO L226 Difference]: Without dead ends: 304 [2020-10-29 04:11:38,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:11:38,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-29 04:11:38,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 211. [2020-10-29 04:11:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-29 04:11:38,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 257 transitions. [2020-10-29 04:11:38,815 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 257 transitions. Word has length 56 [2020-10-29 04:11:38,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:38,815 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 257 transitions. [2020-10-29 04:11:38,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:11:38,815 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 257 transitions. [2020-10-29 04:11:38,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 04:11:38,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:38,817 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:38,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 04:11:38,817 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:38,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:38,817 INFO L82 PathProgramCache]: Analyzing trace with hash 297691600, now seen corresponding path program 1 times [2020-10-29 04:11:38,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:38,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914407806] [2020-10-29 04:11:38,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:38,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:38,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:38,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 04:11:38,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:38,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 04:11:38,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:38,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 04:11:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:11:38,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:38,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:38,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:38,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:38,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:38,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:38,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:38,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:38,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:38,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:38,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:38,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:38,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:38,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:38,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:38,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:38,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:38,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:38,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:38,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:38,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:38,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:38,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:11:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:38,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:38,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:38,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:38,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:38,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:38,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:38,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:38,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:38,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:38,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:38,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:38,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:11:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:38,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:38,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:38,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:38,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:38,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:38,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:38,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:38,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:38,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:38,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:38,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:38,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:11:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:38,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:38,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:38,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:38,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:38,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:38,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:38,961 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 04:11:38,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914407806] [2020-10-29 04:11:38,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:11:38,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:11:38,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50789384] [2020-10-29 04:11:38,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:11:38,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:38,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:11:38,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:11:38,963 INFO L87 Difference]: Start difference. First operand 211 states and 257 transitions. Second operand 4 states. [2020-10-29 04:11:39,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:39,112 INFO L93 Difference]: Finished difference Result 272 states and 330 transitions. [2020-10-29 04:11:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:11:39,113 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-29 04:11:39,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:39,116 INFO L225 Difference]: With dead ends: 272 [2020-10-29 04:11:39,116 INFO L226 Difference]: Without dead ends: 217 [2020-10-29 04:11:39,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 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 04:11:39,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-29 04:11:39,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 211. [2020-10-29 04:11:39,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-29 04:11:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 253 transitions. [2020-10-29 04:11:39,166 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 253 transitions. Word has length 62 [2020-10-29 04:11:39,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:39,167 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 253 transitions. [2020-10-29 04:11:39,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:11:39,167 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 253 transitions. [2020-10-29 04:11:39,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 04:11:39,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:39,169 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:39,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 04:11:39,171 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:39,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:39,171 INFO L82 PathProgramCache]: Analyzing trace with hash -722336944, now seen corresponding path program 2 times [2020-10-29 04:11:39,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:39,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105622457] [2020-10-29 04:11:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:39,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:39,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:39,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 04:11:39,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:39,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 04:11:39,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:39,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 04:11:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:11:39,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:39,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:39,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:39,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:39,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:39,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:39,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:11:39,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:39,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:39,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:39,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:39,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:39,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:39,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:39,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:39,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:39,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:39,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:39,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:39,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:39,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:11:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:39,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:39,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:39,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:39,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:39,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:39,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:39,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:39,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:39,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:11:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:39,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:39,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:39,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:39,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:39,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:39,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:39,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:39,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:39,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:39,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:39,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:11:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:39,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:39,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:39,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:39,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:39,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:39,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:39,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:39,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:39,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:39,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 04:11:39,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105622457] [2020-10-29 04:11:39,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:11:39,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:11:39,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388210962] [2020-10-29 04:11:39,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:11:39,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:39,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:11:39,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:11:39,379 INFO L87 Difference]: Start difference. First operand 211 states and 253 transitions. Second operand 4 states. [2020-10-29 04:11:39,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:39,551 INFO L93 Difference]: Finished difference Result 256 states and 303 transitions. [2020-10-29 04:11:39,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:11:39,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-29 04:11:39,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:39,554 INFO L225 Difference]: With dead ends: 256 [2020-10-29 04:11:39,554 INFO L226 Difference]: Without dead ends: 201 [2020-10-29 04:11:39,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 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 04:11:39,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-29 04:11:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 189. [2020-10-29 04:11:39,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-29 04:11:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 224 transitions. [2020-10-29 04:11:39,600 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 224 transitions. Word has length 62 [2020-10-29 04:11:39,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:39,600 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 224 transitions. [2020-10-29 04:11:39,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:11:39,600 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 224 transitions. [2020-10-29 04:11:39,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 04:11:39,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:39,602 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:39,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 04:11:39,603 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:39,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:39,603 INFO L82 PathProgramCache]: Analyzing trace with hash -652366219, now seen corresponding path program 5 times [2020-10-29 04:11:39,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:39,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687746571] [2020-10-29 04:11:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:39,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:39,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:39,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:39,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:39,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:39,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:41,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:41,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:43,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:43,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:43,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:44,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:44,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:44,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 04:11:44,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 04:11:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 04:11:44,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:44,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:11:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 04:11:44,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:44,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:44,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:44,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:44,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:44,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:44,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:44,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:44,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:44,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:44,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:44,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:44,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:44,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:44,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:44,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:44,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:44,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:44,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:44,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:44,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:11:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:44,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:44,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:44,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:44,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:44,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:44,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:44,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:44,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:44,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:44,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:44,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:44,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 04:11:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:44,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:44,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:44,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:44,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:44,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:44,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:44,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:44,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:11:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:44,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:44,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:44,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:44,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:44,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:44,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:44,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:44,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:44,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 04:11:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:44,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:44,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:44,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:44,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:44,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:44,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:44,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:44,841 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 04:11:44,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687746571] [2020-10-29 04:11:44,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:44,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:11:44,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637884434] [2020-10-29 04:11:44,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:11:44,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:44,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:11:44,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:11:44,844 INFO L87 Difference]: Start difference. First operand 189 states and 224 transitions. Second operand 11 states. [2020-10-29 04:11:45,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:45,541 INFO L93 Difference]: Finished difference Result 288 states and 337 transitions. [2020-10-29 04:11:45,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:11:45,541 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-29 04:11:45,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:45,543 INFO L225 Difference]: With dead ends: 288 [2020-10-29 04:11:45,544 INFO L226 Difference]: Without dead ends: 271 [2020-10-29 04:11:45,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:11:45,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-29 04:11:45,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 189. [2020-10-29 04:11:45,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-29 04:11:45,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 223 transitions. [2020-10-29 04:11:45,580 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 223 transitions. Word has length 65 [2020-10-29 04:11:45,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:45,580 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 223 transitions. [2020-10-29 04:11:45,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:11:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 223 transitions. [2020-10-29 04:11:45,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 04:11:45,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:45,584 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:45,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 04:11:45,585 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:45,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:45,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1932229897, now seen corresponding path program 6 times [2020-10-29 04:11:45,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:45,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309602719] [2020-10-29 04:11:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:45,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:45,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:45,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:46,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:46,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:46,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:47,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:47,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:47,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:50,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:50,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 04:11:50,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 04:11:50,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 04:11:50,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:50,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:11:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:11:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 04:11:50,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:50,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:50,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:50,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:50,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:50,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:50,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:50,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:50,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:50,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:50,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:50,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:50,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:50,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:50,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:11:50,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:11:50,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:50,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:50,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:50,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:11:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:50,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:50,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:50,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:50,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:50,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:50,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:50,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:50,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:50,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 04:11:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:50,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:50,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:50,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:50,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:50,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:50,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:50,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:50,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:50,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:11:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:50,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:50,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:50,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:50,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:50,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:50,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:50,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:50,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:50,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:50,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:50,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:50,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 04:11:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:50,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:50,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:50,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:50,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:50,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:50,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:50,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:50,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 04:11:50,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309602719] [2020-10-29 04:11:50,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:50,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 04:11:50,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048447299] [2020-10-29 04:11:50,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 04:11:50,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:50,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 04:11:50,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:11:50,864 INFO L87 Difference]: Start difference. First operand 189 states and 223 transitions. Second operand 12 states. [2020-10-29 04:11:51,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:51,671 INFO L93 Difference]: Finished difference Result 378 states and 439 transitions. [2020-10-29 04:11:51,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 04:11:51,672 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-29 04:11:51,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:51,674 INFO L225 Difference]: With dead ends: 378 [2020-10-29 04:11:51,674 INFO L226 Difference]: Without dead ends: 251 [2020-10-29 04:11:51,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:11:51,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-29 04:11:51,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 211. [2020-10-29 04:11:51,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-29 04:11:51,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 245 transitions. [2020-10-29 04:11:51,715 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 245 transitions. Word has length 65 [2020-10-29 04:11:51,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:51,715 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 245 transitions. [2020-10-29 04:11:51,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 04:11:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 245 transitions. [2020-10-29 04:11:51,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 04:11:51,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:51,717 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:51,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 04:11:51,717 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:51,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:51,718 INFO L82 PathProgramCache]: Analyzing trace with hash 160831176, now seen corresponding path program 7 times [2020-10-29 04:11:51,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:51,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994025324] [2020-10-29 04:11:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:51,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:51,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:52,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:52,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:52,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:52,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:53,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:56,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:56,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 04:11:56,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:11:56,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:11:56,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:56,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:56,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:11:56,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:11:56,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 04:11:56,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:56,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:56,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:56,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:56,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:56,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:56,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:56,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:56,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:56,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:56,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:56,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:56,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:56,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:56,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:56,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:56,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:56,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:56,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:56,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:56,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:56,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:56,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:56,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:56,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:56,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:11:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:56,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:56,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:56,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:56,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:56,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:56,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:56,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:56,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:11:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:56,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:56,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:56,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:56,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:56,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:56,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:56,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:56,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:11:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:56,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:56,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:56,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:56,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:56,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:56,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:11:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:11:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:56,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:56,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:11:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:56,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:56,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:56,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:56,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:56,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:56,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:56,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:56,987 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 41 proven. 15 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-29 04:11:56,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994025324] [2020-10-29 04:11:56,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:56,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:11:56,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971288480] [2020-10-29 04:11:56,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:11:56,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:56,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:11:56,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:11:56,989 INFO L87 Difference]: Start difference. First operand 211 states and 245 transitions. Second operand 13 states. [2020-10-29 04:11:57,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:57,736 INFO L93 Difference]: Finished difference Result 276 states and 322 transitions. [2020-10-29 04:11:57,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 04:11:57,739 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-10-29 04:11:57,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:57,741 INFO L225 Difference]: With dead ends: 276 [2020-10-29 04:11:57,741 INFO L226 Difference]: Without dead ends: 237 [2020-10-29 04:11:57,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2020-10-29 04:11:57,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-29 04:11:57,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 211. [2020-10-29 04:11:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-29 04:11:57,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 244 transitions. [2020-10-29 04:11:57,780 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 244 transitions. Word has length 71 [2020-10-29 04:11:57,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:57,781 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 244 transitions. [2020-10-29 04:11:57,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:11:57,781 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 244 transitions. [2020-10-29 04:11:57,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 04:11:57,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:57,783 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:57,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 04:11:57,783 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:57,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:57,783 INFO L82 PathProgramCache]: Analyzing trace with hash 408977670, now seen corresponding path program 8 times [2020-10-29 04:11:57,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:57,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132687275] [2020-10-29 04:11:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:57,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:58,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:58,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 04:11:58,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:58,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-29 04:11:58,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:58,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:58,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:11:58,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:11:58,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 04:11:58,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:58,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:58,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:58,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:58,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:58,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:58,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:11:58,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:58,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:58,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:58,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:58,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:11:58,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:11:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:58,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:58,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:58,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:58,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:58,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:58,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:58,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:58,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:58,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:11:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:58,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:58,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:58,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:58,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:58,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:58,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:58,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:58,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:58,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:11:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:58,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:58,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:58,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:58,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:58,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:58,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:58,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:58,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:58,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:58,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:58,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:58,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:11:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:58,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:58,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:58,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:58,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:58,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:58,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:58,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:58,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:58,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:58,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:11:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:58,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:58,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:58,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:58,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:58,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:11:58,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:58,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:58,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 04:11:58,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132687275] [2020-10-29 04:11:58,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:58,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:11:58,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071143907] [2020-10-29 04:11:58,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:11:58,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:58,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:11:58,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:11:58,538 INFO L87 Difference]: Start difference. First operand 211 states and 244 transitions. Second operand 15 states. [2020-10-29 04:12:00,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:00,539 INFO L93 Difference]: Finished difference Result 366 states and 421 transitions. [2020-10-29 04:12:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 04:12:00,540 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 71 [2020-10-29 04:12:00,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:00,543 INFO L225 Difference]: With dead ends: 366 [2020-10-29 04:12:00,543 INFO L226 Difference]: Without dead ends: 363 [2020-10-29 04:12:00,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=340, Invalid=2210, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 04:12:00,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-29 04:12:00,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 240. [2020-10-29 04:12:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-29 04:12:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 279 transitions. [2020-10-29 04:12:00,587 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 279 transitions. Word has length 71 [2020-10-29 04:12:00,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:00,587 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 279 transitions. [2020-10-29 04:12:00,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:12:00,587 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 279 transitions. [2020-10-29 04:12:00,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 04:12:00,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:00,589 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:00,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 04:12:00,589 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:00,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:00,590 INFO L82 PathProgramCache]: Analyzing trace with hash -890879476, now seen corresponding path program 3 times [2020-10-29 04:12:00,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:00,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870804717] [2020-10-29 04:12:00,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:00,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:00,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:00,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 04:12:00,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:00,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-29 04:12:00,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:00,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:00,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:12:00,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:12:00,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 04:12:00,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:01,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:01,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:01,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:01,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:01,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:01,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:01,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:01,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:01,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:01,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:01,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:01,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:01,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:12:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:01,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:01,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:01,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:01,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:01,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:01,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:01,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:01,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:01,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:12:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:01,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:01,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:01,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:01,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:01,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:01,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:01,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:01,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:01,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:01,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:12:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:01,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:01,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:01,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:01,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:01,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:01,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:01,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:01,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:01,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:12:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:01,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:01,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:01,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:01,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:01,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:01,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:01,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:01,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:01,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:01,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:01,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:01,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:12:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:01,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:01,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:01,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:01,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:01,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:01,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:01,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:01,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 04:12:01,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870804717] [2020-10-29 04:12:01,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:01,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:12:01,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102972026] [2020-10-29 04:12:01,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:12:01,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:01,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:12:01,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:12:01,129 INFO L87 Difference]: Start difference. First operand 240 states and 279 transitions. Second operand 13 states. [2020-10-29 04:12:02,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:02,927 INFO L93 Difference]: Finished difference Result 397 states and 456 transitions. [2020-10-29 04:12:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 04:12:02,927 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-10-29 04:12:02,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:02,931 INFO L225 Difference]: With dead ends: 397 [2020-10-29 04:12:02,931 INFO L226 Difference]: Without dead ends: 380 [2020-10-29 04:12:02,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=384, Invalid=1968, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 04:12:02,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-29 04:12:02,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 245. [2020-10-29 04:12:02,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-29 04:12:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 285 transitions. [2020-10-29 04:12:02,976 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 285 transitions. Word has length 71 [2020-10-29 04:12:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:02,976 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 285 transitions. [2020-10-29 04:12:02,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:12:02,976 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 285 transitions. [2020-10-29 04:12:02,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 04:12:02,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:02,978 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:02,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 04:12:02,978 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:02,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:02,979 INFO L82 PathProgramCache]: Analyzing trace with hash 639644696, now seen corresponding path program 9 times [2020-10-29 04:12:02,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:02,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055359914] [2020-10-29 04:12:02,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:03,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:03,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:03,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:03,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:03,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:06,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:08,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:08,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 04:12:08,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:12:08,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:12:08,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:08,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:08,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:12:08,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:12:08,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 04:12:08,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:08,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:08,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:08,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:08,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:08,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:08,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:08,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:08,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:08,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:08,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:08,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:08,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:08,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:12:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:08,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:08,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:08,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:08,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:08,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:08,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:08,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:08,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:08,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:08,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:08,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:12:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:08,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:08,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:08,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:08,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:08,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:08,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:08,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:08,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:08,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:08,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:08,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:08,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:12:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:08,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:08,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:08,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:08,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:08,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:08,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:08,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:08,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:08,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:08,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:08,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:08,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:12:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:08,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:08,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:08,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:08,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:08,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:08,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:08,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:08,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:08,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:08,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:08,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:08,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:12:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:08,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:08,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:08,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:08,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:08,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:08,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:08,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:08,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:08,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:12:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:08,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:08,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:08,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:08,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:08,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:08,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:08,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:08,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 15 proven. 68 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 04:12:08,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055359914] [2020-10-29 04:12:08,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:08,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:12:08,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170887016] [2020-10-29 04:12:08,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:12:08,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:08,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:12:08,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:12:08,284 INFO L87 Difference]: Start difference. First operand 245 states and 285 transitions. Second operand 14 states. [2020-10-29 04:12:10,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:10,752 INFO L93 Difference]: Finished difference Result 460 states and 534 transitions. [2020-10-29 04:12:10,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-29 04:12:10,753 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2020-10-29 04:12:10,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:10,756 INFO L225 Difference]: With dead ends: 460 [2020-10-29 04:12:10,756 INFO L226 Difference]: Without dead ends: 443 [2020-10-29 04:12:10,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=474, Invalid=2832, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 04:12:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-29 04:12:10,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 283. [2020-10-29 04:12:10,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-10-29 04:12:10,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 334 transitions. [2020-10-29 04:12:10,817 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 334 transitions. Word has length 80 [2020-10-29 04:12:10,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:10,818 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 334 transitions. [2020-10-29 04:12:10,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:12:10,818 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 334 transitions. [2020-10-29 04:12:10,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 04:12:10,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:10,820 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:10,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 04:12:10,820 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:10,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:10,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1018980884, now seen corresponding path program 2 times [2020-10-29 04:12:10,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:10,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008788102] [2020-10-29 04:12:10,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:10,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:10,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:10,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:10,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:11,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:11,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:11,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:12,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:12,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:12,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:12,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:12,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:12,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:13,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:13,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:14,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:14,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:15,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:15,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 04:12:15,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 04:12:15,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 04:12:15,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:15,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:15,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:12:15,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:12:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 04:12:15,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:16,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:16,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:16,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:16,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:16,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:16,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:16,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:16,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:16,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:16,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:16,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:16,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:16,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:12:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:16,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:16,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:16,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:16,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:16,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:16,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:16,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:16,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:16,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:12:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:16,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:16,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:16,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:16,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:16,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:16,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:16,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:16,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:16,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:12:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:16,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:16,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:16,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:16,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:16,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:16,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:16,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:16,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:16,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:12:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:16,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:16,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:16,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:16,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:16,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:16,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:16,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:16,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:16,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:16,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:16,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:16,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:12:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:16,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:16,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:16,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:16,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:16,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:16,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:16,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:16,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:16,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:12:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:16,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:16,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:16,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:16,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:12:16,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:16,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:16,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:16,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:12:16,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:16,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 36 proven. 46 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-29 04:12:16,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008788102] [2020-10-29 04:12:16,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:16,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:12:16,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197204862] [2020-10-29 04:12:16,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:12:16,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:16,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:12:16,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:12:16,146 INFO L87 Difference]: Start difference. First operand 283 states and 334 transitions. Second operand 15 states. [2020-10-29 04:12:17,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:17,789 INFO L93 Difference]: Finished difference Result 386 states and 447 transitions. [2020-10-29 04:12:17,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 04:12:17,789 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 80 [2020-10-29 04:12:17,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:17,792 INFO L225 Difference]: With dead ends: 386 [2020-10-29 04:12:17,792 INFO L226 Difference]: Without dead ends: 369 [2020-10-29 04:12:17,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=244, Invalid=1162, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 04:12:17,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-10-29 04:12:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 283. [2020-10-29 04:12:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-10-29 04:12:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 333 transitions. [2020-10-29 04:12:17,839 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 333 transitions. Word has length 80 [2020-10-29 04:12:17,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:17,839 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 333 transitions. [2020-10-29 04:12:17,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:12:17,839 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 333 transitions. [2020-10-29 04:12:17,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 04:12:17,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:17,841 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:17,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 04:12:17,842 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:17,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:17,842 INFO L82 PathProgramCache]: Analyzing trace with hash -260882794, now seen corresponding path program 3 times [2020-10-29 04:12:17,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:17,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768821136] [2020-10-29 04:12:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:17,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:17,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:17,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:18,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:18,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:18,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:18,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:19,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:20,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:21,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:21,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:21,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:21,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:21,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:22,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:22,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 04:12:22,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 04:12:22,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 04:12:22,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:22,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:12:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:12:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 04:12:22,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:23,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:23,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:23,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:23,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:23,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:23,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:12:23,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:23,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:23,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:23,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:23,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:23,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:12:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:23,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:23,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:23,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:23,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:23,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:23,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:23,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:23,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:23,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:12:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:23,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:23,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:23,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:23,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:23,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:23,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:23,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:23,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:12:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:23,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:23,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:23,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:23,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:23,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:23,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:23,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:23,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:23,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:12:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:23,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:23,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:23,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:23,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:23,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:23,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:23,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:23,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:23,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:23,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:23,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:23,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:12:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:23,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:23,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:23,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:23,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:23,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:23,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:23,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:23,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:23,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:12:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:23,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:23,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:23,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:23,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:23,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:23,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:23,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:23,165 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 10 proven. 73 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 04:12:23,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768821136] [2020-10-29 04:12:23,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:23,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:12:23,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133528058] [2020-10-29 04:12:23,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:12:23,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:23,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:12:23,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:12:23,167 INFO L87 Difference]: Start difference. First operand 283 states and 333 transitions. Second operand 16 states. [2020-10-29 04:12:26,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:26,074 INFO L93 Difference]: Finished difference Result 461 states and 535 transitions. [2020-10-29 04:12:26,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-29 04:12:26,074 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 80 [2020-10-29 04:12:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:26,078 INFO L225 Difference]: With dead ends: 461 [2020-10-29 04:12:26,079 INFO L226 Difference]: Without dead ends: 458 [2020-10-29 04:12:26,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1440 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=589, Invalid=4103, Unknown=0, NotChecked=0, Total=4692 [2020-10-29 04:12:26,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-10-29 04:12:26,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 308. [2020-10-29 04:12:26,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-29 04:12:26,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 363 transitions. [2020-10-29 04:12:26,143 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 363 transitions. Word has length 80 [2020-10-29 04:12:26,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:26,143 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 363 transitions. [2020-10-29 04:12:26,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:12:26,143 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 363 transitions. [2020-10-29 04:12:26,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 04:12:26,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:26,145 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:26,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 04:12:26,145 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:26,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:26,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1501309626, now seen corresponding path program 10 times [2020-10-29 04:12:26,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:26,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609565483] [2020-10-29 04:12:26,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:26,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:26,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:26,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:26,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:26,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:28,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:28,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:30,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:30,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:30,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:30,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:30,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:31,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:31,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 04:12:31,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 04:12:31,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:12:31,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:31,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:12:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:12:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 04:12:31,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:31,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:31,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:31,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:31,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:31,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:31,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:31,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:31,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:31,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:31,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:12:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:31,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:31,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:31,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:31,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:31,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:31,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:31,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:31,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:31,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:12:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:31,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:31,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:31,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:31,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:31,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:31,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:31,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:31,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:31,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:12:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:31,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:31,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:31,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:31,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:31,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:31,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:31,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:31,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:12:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:31,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:31,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:31,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:31,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:31,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:31,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:31,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:31,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:31,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:31,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:31,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:31,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:12:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:31,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:31,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:31,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:31,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:31,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:31,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:31,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:31,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:31,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:31,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:31,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:31,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:12:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:31,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:31,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:31,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:31,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:31,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:31,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:31,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:31,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:31,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:12:31,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:31,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:31,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 04:12:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:31,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:31,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:31,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:31,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:31,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:31,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:31,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:31,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:31,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:12:31,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:31,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 60 proven. 46 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-29 04:12:31,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609565483] [2020-10-29 04:12:31,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:31,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:12:31,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521090569] [2020-10-29 04:12:31,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:12:31,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:31,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:12:31,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:12:31,470 INFO L87 Difference]: Start difference. First operand 308 states and 363 transitions. Second operand 14 states. [2020-10-29 04:12:32,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:32,791 INFO L93 Difference]: Finished difference Result 424 states and 492 transitions. [2020-10-29 04:12:32,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 04:12:32,792 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2020-10-29 04:12:32,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:32,794 INFO L225 Difference]: With dead ends: 424 [2020-10-29 04:12:32,794 INFO L226 Difference]: Without dead ends: 402 [2020-10-29 04:12:32,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=650, Unknown=0, NotChecked=0, Total=812 [2020-10-29 04:12:32,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-10-29 04:12:32,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 308. [2020-10-29 04:12:32,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-29 04:12:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 362 transitions. [2020-10-29 04:12:32,845 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 362 transitions. Word has length 89 [2020-10-29 04:12:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:32,845 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 362 transitions. [2020-10-29 04:12:32,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:12:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 362 transitions. [2020-10-29 04:12:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 04:12:32,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:32,847 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:32,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 04:12:32,848 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:32,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:32,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1635323132, now seen corresponding path program 11 times [2020-10-29 04:12:32,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:32,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556168789] [2020-10-29 04:12:32,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:32,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:33,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:33,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 04:12:33,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:33,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-29 04:12:33,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:33,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:12:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:12:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 04:12:33,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:33,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:33,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:33,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:33,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:33,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:33,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:33,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:33,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:33,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:33,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:33,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:33,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:33,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:12:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:33,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:33,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:33,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:33,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:33,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:33,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:33,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:33,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:33,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:33,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:33,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:33,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:12:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:33,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:33,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:33,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:33,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:33,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:33,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:33,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:33,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:33,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:12:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:33,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:33,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:33,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:33,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:33,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:33,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:33,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:33,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:33,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:33,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:33,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:12:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:33,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:33,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:33,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:33,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:33,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:33,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:33,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:33,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:33,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:33,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:33,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:33,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:12:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:33,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:33,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:33,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:33,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:33,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:33,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:33,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:33,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:33,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:12:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:33,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:33,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:33,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:33,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:33,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:33,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:33,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:33,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:33,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:33,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:33,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:33,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 04:12:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:33,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:33,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:33,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:33,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:33,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:33,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:33,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:33,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:33,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:33,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:33,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 12 proven. 101 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 04:12:33,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556168789] [2020-10-29 04:12:33,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:33,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:12:33,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195528344] [2020-10-29 04:12:33,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:12:33,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:33,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:12:33,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:12:33,539 INFO L87 Difference]: Start difference. First operand 308 states and 362 transitions. Second operand 17 states. [2020-10-29 04:12:36,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:36,578 INFO L93 Difference]: Finished difference Result 499 states and 580 transitions. [2020-10-29 04:12:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-29 04:12:36,579 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 89 [2020-10-29 04:12:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:36,582 INFO L225 Difference]: With dead ends: 499 [2020-10-29 04:12:36,582 INFO L226 Difference]: Without dead ends: 496 [2020-10-29 04:12:36,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1350 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=578, Invalid=3978, Unknown=0, NotChecked=0, Total=4556 [2020-10-29 04:12:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-10-29 04:12:36,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 347. [2020-10-29 04:12:36,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-10-29 04:12:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 409 transitions. [2020-10-29 04:12:36,649 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 409 transitions. Word has length 89 [2020-10-29 04:12:36,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:36,650 INFO L481 AbstractCegarLoop]: Abstraction has 347 states and 409 transitions. [2020-10-29 04:12:36,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:12:36,650 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 409 transitions. [2020-10-29 04:12:36,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 04:12:36,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:36,652 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:36,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 04:12:36,653 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:36,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:36,653 INFO L82 PathProgramCache]: Analyzing trace with hash -411459380, now seen corresponding path program 4 times [2020-10-29 04:12:36,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:36,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783985764] [2020-10-29 04:12:36,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:36,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:37,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:37,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 04:12:37,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:37,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-29 04:12:37,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:37,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:12:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:12:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 04:12:37,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:37,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:37,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:37,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:37,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:37,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:37,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:37,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:37,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:37,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:37,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:12:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:37,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:37,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:37,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:37,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:37,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:37,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:37,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:37,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:37,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:12:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:37,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:37,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:37,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:37,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:37,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:37,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:37,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:37,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:37,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:37,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:12:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:37,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:37,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:37,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:37,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:37,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:37,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:37,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:37,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:37,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:12:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:37,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:37,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:37,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:37,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:37,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:37,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:37,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:37,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:12:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:37,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:37,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:37,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:37,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:37,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:37,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:37,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:37,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:37,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:37,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:37,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:37,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:12:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:37,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:37,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:37,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:37,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:37,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:37,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:37,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:37,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 04:12:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:37,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:37,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:37,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:37,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:37,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:37,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:37,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:37,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:37,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:37,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:37,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 95 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 04:12:37,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783985764] [2020-10-29 04:12:37,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:37,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:12:37,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155440296] [2020-10-29 04:12:37,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:12:37,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:37,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:12:37,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:12:37,386 INFO L87 Difference]: Start difference. First operand 347 states and 409 transitions. Second operand 15 states. [2020-10-29 04:12:40,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:40,044 INFO L93 Difference]: Finished difference Result 515 states and 598 transitions. [2020-10-29 04:12:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-29 04:12:40,045 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-10-29 04:12:40,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:40,049 INFO L225 Difference]: With dead ends: 515 [2020-10-29 04:12:40,049 INFO L226 Difference]: Without dead ends: 498 [2020-10-29 04:12:40,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=501, Invalid=3159, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 04:12:40,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-10-29 04:12:40,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 352. [2020-10-29 04:12:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-29 04:12:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 415 transitions. [2020-10-29 04:12:40,110 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 415 transitions. Word has length 89 [2020-10-29 04:12:40,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:40,111 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 415 transitions. [2020-10-29 04:12:40,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:12:40,111 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 415 transitions. [2020-10-29 04:12:40,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 04:12:40,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:40,113 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:40,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 04:12:40,114 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:40,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:40,114 INFO L82 PathProgramCache]: Analyzing trace with hash -158916646, now seen corresponding path program 12 times [2020-10-29 04:12:40,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:40,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894167483] [2020-10-29 04:12:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:40,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:40,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:40,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:40,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:40,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:40,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:40,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:45,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:45,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 04:12:45,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:12:45,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:12:45,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:45,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:12:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:12:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 04:12:45,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:45,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:45,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:45,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:45,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:45,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:45,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:45,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:45,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:45,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:45,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:12:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:45,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:45,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:45,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:45,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:45,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:12:45,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:45,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:45,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:45,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:12:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:45,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:45,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:45,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:45,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:45,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:45,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:45,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:45,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:12:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:45,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:45,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:45,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:45,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:45,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:45,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:45,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:45,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:45,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:45,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:45,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:45,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:12:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:45,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:45,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:45,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:45,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:45,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:45,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:45,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:45,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:45,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:45,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:45,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:45,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:12:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:45,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:45,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:45,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:45,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:45,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:45,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:45,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:45,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:45,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:45,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:45,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:45,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:12:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:45,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:45,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:45,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:45,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:45,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:45,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:45,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:45,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:45,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 04:12:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:45,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:45,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:45,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:45,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:45,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:45,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:45,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:45,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:45,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:45,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 04:12:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:45,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:45,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:45,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:45,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:45,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:45,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:45,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:12:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:45,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 52 proven. 95 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 04:12:45,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894167483] [2020-10-29 04:12:45,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:45,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:12:45,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339386793] [2020-10-29 04:12:45,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:12:45,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:45,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:12:45,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:12:45,494 INFO L87 Difference]: Start difference. First operand 352 states and 415 transitions. Second operand 16 states. [2020-10-29 04:12:47,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:47,981 INFO L93 Difference]: Finished difference Result 491 states and 570 transitions. [2020-10-29 04:12:47,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 04:12:47,982 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 98 [2020-10-29 04:12:47,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:47,985 INFO L225 Difference]: With dead ends: 491 [2020-10-29 04:12:47,985 INFO L226 Difference]: Without dead ends: 474 [2020-10-29 04:12:47,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=486, Invalid=1964, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 04:12:47,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-10-29 04:12:48,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 352. [2020-10-29 04:12:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-29 04:12:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 414 transitions. [2020-10-29 04:12:48,063 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 414 transitions. Word has length 98 [2020-10-29 04:12:48,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:48,064 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 414 transitions. [2020-10-29 04:12:48,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:12:48,064 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 414 transitions. [2020-10-29 04:12:48,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 04:12:48,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:48,066 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:48,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 04:12:48,067 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:48,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:48,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1438780324, now seen corresponding path program 13 times [2020-10-29 04:12:48,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:48,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755071567] [2020-10-29 04:12:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:48,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:48,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:48,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 04:12:48,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:48,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-29 04:12:48,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:48,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:12:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:12:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 04:12:48,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:48,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:48,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:48,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:48,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:48,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:48,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:12:48,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:48,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:48,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:48,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:12:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:48,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:48,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:48,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:48,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:48,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:48,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:48,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:48,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:12:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:48,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:48,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:48,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:48,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:48,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:48,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:48,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:48,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:48,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:48,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:48,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:12:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:48,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:48,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:48,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:48,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:48,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:48,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:48,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:48,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:12:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:48,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:48,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:48,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:48,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:48,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:48,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:48,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:48,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:48,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:12:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:48,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:48,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:48,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:48,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:48,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:48,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:48,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:48,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:12:48,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:12:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:48,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:48,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:48,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:48,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:48,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:48,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:48,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:48,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:48,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:12:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 04:12:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:48,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:48,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:48,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:48,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:48,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:48,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:48,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:48,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:48,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:48,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:48,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 04:12:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:48,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:48,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:48,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:48,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:48,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:48,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 14 proven. 134 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 04:12:48,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755071567] [2020-10-29 04:12:48,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:48,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:12:48,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748038230] [2020-10-29 04:12:48,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:12:48,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:48,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:12:48,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:12:48,987 INFO L87 Difference]: Start difference. First operand 352 states and 414 transitions. Second operand 17 states. [2020-10-29 04:12:52,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:52,667 INFO L93 Difference]: Finished difference Result 539 states and 627 transitions. [2020-10-29 04:12:52,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-29 04:12:52,668 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 98 [2020-10-29 04:12:52,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:52,672 INFO L225 Difference]: With dead ends: 539 [2020-10-29 04:12:52,672 INFO L226 Difference]: Without dead ends: 536 [2020-10-29 04:12:52,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=557, Invalid=4413, Unknown=0, NotChecked=0, Total=4970 [2020-10-29 04:12:52,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2020-10-29 04:12:52,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 386. [2020-10-29 04:12:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-29 04:12:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 455 transitions. [2020-10-29 04:12:52,770 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 455 transitions. Word has length 98 [2020-10-29 04:12:52,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:52,770 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 455 transitions. [2020-10-29 04:12:52,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:12:52,770 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 455 transitions. [2020-10-29 04:12:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 04:12:52,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:52,773 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:52,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 04:12:52,773 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:52,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:52,774 INFO L82 PathProgramCache]: Analyzing trace with hash 413627154, now seen corresponding path program 5 times [2020-10-29 04:12:52,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:52,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319028489] [2020-10-29 04:12:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:52,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:53,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:53,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 04:12:53,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:53,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-29 04:12:53,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:53,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:12:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:12:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 04:12:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:53,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:53,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:53,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:53,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:53,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:53,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:53,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:53,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:53,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:53,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:12:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:53,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:53,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:53,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:53,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:53,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:12:53,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:53,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:53,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:53,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:53,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:53,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:53,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:12:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:53,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:53,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:53,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:53,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:53,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:53,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:53,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:53,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:53,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:53,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:53,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:53,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:12:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:53,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:53,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:53,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:53,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:53,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:53,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:53,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:53,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:53,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:12:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:53,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:53,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:53,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:53,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:53,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:53,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:53,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:53,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:12:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:53,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:53,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:53,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:53,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:53,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:53,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:53,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:53,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:53,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:12:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:53,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:53,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:53,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:53,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:53,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:53,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:53,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:53,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:53,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 04:12:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:53,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:53,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:53,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:53,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:53,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:53,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:53,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:53,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:53,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:53,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:53,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 04:12:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:53,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:53,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:53,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:53,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:53,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:53,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:53,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:53,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:53,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:53,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 21 proven. 127 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 04:12:53,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319028489] [2020-10-29 04:12:53,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:53,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:12:53,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910053856] [2020-10-29 04:12:53,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:12:53,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:53,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:12:53,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:12:53,514 INFO L87 Difference]: Start difference. First operand 386 states and 455 transitions. Second operand 15 states. [2020-10-29 04:12:56,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:56,408 INFO L93 Difference]: Finished difference Result 554 states and 644 transitions. [2020-10-29 04:12:56,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-29 04:12:56,409 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-29 04:12:56,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:56,413 INFO L225 Difference]: With dead ends: 554 [2020-10-29 04:12:56,413 INFO L226 Difference]: Without dead ends: 537 [2020-10-29 04:12:56,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=468, Invalid=3314, Unknown=0, NotChecked=0, Total=3782 [2020-10-29 04:12:56,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-10-29 04:12:56,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 391. [2020-10-29 04:12:56,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-29 04:12:56,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 461 transitions. [2020-10-29 04:12:56,509 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 461 transitions. Word has length 98 [2020-10-29 04:12:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:56,510 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 461 transitions. [2020-10-29 04:12:56,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:12:56,510 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 461 transitions. [2020-10-29 04:12:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 04:12:56,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:56,512 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:56,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 04:12:56,513 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:56,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:56,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1801462146, now seen corresponding path program 14 times [2020-10-29 04:12:56,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:56,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591270453] [2020-10-29 04:12:56,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:56,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:56,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:56,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:56,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:56,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:57,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:57,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:57,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:57,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:01,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:01,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 04:13:01,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:13:01,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:13:01,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:01,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:13:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:13:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 04:13:01,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:01,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:01,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:01,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:01,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:01,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:01,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:01,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:01,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:01,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:01,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:13:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:01,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:01,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:01,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:01,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:01,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:01,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:01,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:01,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:01,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:01,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:01,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:01,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:13:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:01,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:01,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:01,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:01,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:01,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:01,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:01,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:13:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:01,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:01,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:01,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:01,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:01,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:01,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:01,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:01,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:01,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:01,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:01,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:01,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:13:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:01,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:01,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:01,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:01,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:01,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:01,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:01,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:01,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:01,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:01,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:13:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:01,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:01,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:01,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:01,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:01,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:01,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:01,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:01,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:01,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:01,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:01,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:13:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:01,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:01,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:01,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:01,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:01,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:01,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:01,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:01,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:01,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:01,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 04:13:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:01,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:01,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:01,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:01,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:01,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:01,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:01,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:01,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:01,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 04:13:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:01,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:01,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:01,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:01,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:01,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:01,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:01,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:01,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:01,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 04:13:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:01,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:01,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:01,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:01,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:01,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:13:01,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:01,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:01,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:01,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:13:01,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:01,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 60 proven. 127 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-29 04:13:01,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591270453] [2020-10-29 04:13:01,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:01,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:13:01,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41402823] [2020-10-29 04:13:01,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:13:01,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:01,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:13:01,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:13:01,940 INFO L87 Difference]: Start difference. First operand 391 states and 461 transitions. Second operand 16 states. [2020-10-29 04:13:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:13:05,031 INFO L93 Difference]: Finished difference Result 542 states and 630 transitions. [2020-10-29 04:13:05,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-29 04:13:05,032 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 107 [2020-10-29 04:13:05,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:13:05,035 INFO L225 Difference]: With dead ends: 542 [2020-10-29 04:13:05,036 INFO L226 Difference]: Without dead ends: 525 [2020-10-29 04:13:05,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=444, Invalid=2312, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 04:13:05,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-10-29 04:13:05,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 391. [2020-10-29 04:13:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-29 04:13:05,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 460 transitions. [2020-10-29 04:13:05,109 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 460 transitions. Word has length 107 [2020-10-29 04:13:05,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:13:05,110 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 460 transitions. [2020-10-29 04:13:05,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:13:05,110 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 460 transitions. [2020-10-29 04:13:05,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 04:13:05,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:13:05,112 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:13:05,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 04:13:05,113 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:13:05,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:13:05,113 INFO L82 PathProgramCache]: Analyzing trace with hash 521598468, now seen corresponding path program 15 times [2020-10-29 04:13:05,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:13:05,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088127828] [2020-10-29 04:13:05,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:13:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:05,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:05,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:05,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:05,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 04:13:05,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:13:05,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 811 [2020-10-29 04:13:05,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:05,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:05,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:13:05,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:13:05,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 04:13:05,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:06,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:06,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:06,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:06,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:06,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:06,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:06,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:06,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:06,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:06,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:06,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:13:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:06,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:06,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:06,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:06,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:06,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:13:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:13:06,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:06,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:06,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:13:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:06,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:06,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:06,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:06,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:06,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:06,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:06,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:06,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:13:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:06,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:06,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:06,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:06,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:06,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:06,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:06,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:06,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:13:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:06,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:06,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:06,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:06,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:06,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:06,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:06,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:06,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:06,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:13:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:06,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:06,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:06,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:06,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:06,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:06,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:06,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:06,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:06,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:13:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:06,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:06,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:06,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:06,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:06,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:06,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:06,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:06,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:06,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:06,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 04:13:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:06,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:06,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:06,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:06,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:06,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:06,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:06,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:06,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:06,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:06,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:06,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:06,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 04:13:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:06,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:06,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:06,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:06,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:06,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:06,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:06,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:06,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:06,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:06,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:06,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:06,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 04:13:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:06,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:06,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:06,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:06,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:06,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:06,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:06,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:06,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:06,402 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 180 proven. 8 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 04:13:06,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088127828] [2020-10-29 04:13:06,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:06,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:13:06,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429466616] [2020-10-29 04:13:06,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:13:06,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:06,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:13:06,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:13:06,405 INFO L87 Difference]: Start difference. First operand 391 states and 460 transitions. Second operand 17 states. [2020-10-29 04:13:07,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:13:07,788 INFO L93 Difference]: Finished difference Result 786 states and 917 transitions. [2020-10-29 04:13:07,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 04:13:07,789 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 107 [2020-10-29 04:13:07,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:13:07,793 INFO L225 Difference]: With dead ends: 786 [2020-10-29 04:13:07,793 INFO L226 Difference]: Without dead ends: 479 [2020-10-29 04:13:07,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=233, Invalid=823, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 04:13:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-29 04:13:07,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 439. [2020-10-29 04:13:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-29 04:13:07,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 508 transitions. [2020-10-29 04:13:07,879 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 508 transitions. Word has length 107 [2020-10-29 04:13:07,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:13:07,879 INFO L481 AbstractCegarLoop]: Abstraction has 439 states and 508 transitions. [2020-10-29 04:13:07,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:13:07,880 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 508 transitions. [2020-10-29 04:13:07,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 04:13:07,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:13:07,881 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 7, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:13:07,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 04:13:07,882 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:13:07,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:13:07,882 INFO L82 PathProgramCache]: Analyzing trace with hash -677628779, now seen corresponding path program 16 times [2020-10-29 04:13:07,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:13:07,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362765259] [2020-10-29 04:13:07,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:13:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:07,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:08,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:08,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 04:13:08,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:08,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 627 [2020-10-29 04:13:08,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:08,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:13:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:13:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 04:13:08,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:08,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:08,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:08,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:08,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:08,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:13:08,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:08,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:08,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:08,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:13:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:08,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:08,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:08,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:08,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:08,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:08,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:08,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:08,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:08,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:08,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:08,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:08,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:13:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:08,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:08,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:08,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:08,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:08,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:08,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:08,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:08,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:08,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:08,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:08,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:08,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:13:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:08,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:08,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:08,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:08,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:08,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:08,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:08,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:08,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:08,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:13:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:08,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:08,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:08,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:08,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:08,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:08,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:08,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:08,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:08,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:08,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:08,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:08,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 04:13:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:08,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:08,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:08,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:08,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:08,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:08,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:08,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:08,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:08,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:08,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:08,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:08,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 04:13:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:08,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:08,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:08,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:08,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:08,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:08,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:08,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:08,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:08,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 04:13:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:08,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:08,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:08,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:08,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:08,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:08,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:08,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:08,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:08,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 04:13:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:08,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:08,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:08,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:08,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:08,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:08,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:08,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:08,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:08,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:08,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:08,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:08,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 04:13:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:08,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:08,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:08,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:08,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:08,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:08,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:08,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:08,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 16 proven. 185 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 04:13:09,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362765259] [2020-10-29 04:13:09,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:09,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 04:13:09,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825771642] [2020-10-29 04:13:09,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 04:13:09,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:09,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 04:13:09,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:13:09,019 INFO L87 Difference]: Start difference. First operand 439 states and 508 transitions. Second operand 20 states. [2020-10-29 04:13:15,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:13:15,130 INFO L93 Difference]: Finished difference Result 653 states and 752 transitions. [2020-10-29 04:13:15,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-10-29 04:13:15,131 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 113 [2020-10-29 04:13:15,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:13:15,139 INFO L225 Difference]: With dead ends: 653 [2020-10-29 04:13:15,139 INFO L226 Difference]: Without dead ends: 650 [2020-10-29 04:13:15,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3457 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1054, Invalid=9452, Unknown=0, NotChecked=0, Total=10506 [2020-10-29 04:13:15,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-10-29 04:13:15,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 468. [2020-10-29 04:13:15,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-29 04:13:15,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 543 transitions. [2020-10-29 04:13:15,268 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 543 transitions. Word has length 113 [2020-10-29 04:13:15,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:13:15,268 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 543 transitions. [2020-10-29 04:13:15,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 04:13:15,268 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 543 transitions. [2020-10-29 04:13:15,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 04:13:15,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:13:15,271 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 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] [2020-10-29 04:13:15,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 04:13:15,272 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:13:15,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:13:15,273 INFO L82 PathProgramCache]: Analyzing trace with hash 227632543, now seen corresponding path program 6 times [2020-10-29 04:13:15,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:13:15,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530754173] [2020-10-29 04:13:15,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:13:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:15,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:16,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:16,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 04:13:16,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:16,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-29 04:13:16,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:16,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:13:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:13:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 04:13:16,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:16,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:16,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:16,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:16,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:16,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:16,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:16,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:16,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:16,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:16,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:16,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:16,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:16,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:13:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:16,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:16,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:16,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:16,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:16,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:13:16,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:16,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:16,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:16,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:16,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:16,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:16,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:13:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:16,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:16,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:16,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:16,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:16,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:16,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:16,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:16,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:13:16,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:13:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:16,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:16,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:16,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:16,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:16,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:16,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:16,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:16,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:16,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:16,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:16,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:16,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:13:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:16,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:16,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:16,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:16,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:16,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:16,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:16,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:16,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:16,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:16,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:16,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:16,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 04:13:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:16,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:16,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:16,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:16,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:16,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:16,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:16,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:16,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:16,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 04:13:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:16,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:16,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:16,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:16,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:16,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:16,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:16,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:16,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:16,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 04:13:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:16,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:16,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:16,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:16,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:16,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:16,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:16,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:16,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:16,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:16,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:16,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:16,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 04:13:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:16,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:16,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:16,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:16,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:16,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:16,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:16,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:16,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:16,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:16,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:16,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 04:13:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:16,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:16,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:16,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:16,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:16,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:16,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:16,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:16,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:16,608 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 24 proven. 177 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 04:13:16,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530754173] [2020-10-29 04:13:16,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:16,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 04:13:16,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861142064] [2020-10-29 04:13:16,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 04:13:16,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:16,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 04:13:16,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:13:16,611 INFO L87 Difference]: Start difference. First operand 468 states and 543 transitions. Second operand 18 states. [2020-10-29 04:13:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:13:22,675 INFO L93 Difference]: Finished difference Result 673 states and 774 transitions. [2020-10-29 04:13:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-10-29 04:13:22,677 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 113 [2020-10-29 04:13:22,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:13:22,681 INFO L225 Difference]: With dead ends: 673 [2020-10-29 04:13:22,681 INFO L226 Difference]: Without dead ends: 656 [2020-10-29 04:13:22,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3421 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1162, Invalid=8738, Unknown=0, NotChecked=0, Total=9900 [2020-10-29 04:13:22,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-10-29 04:13:22,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 473. [2020-10-29 04:13:22,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-29 04:13:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 549 transitions. [2020-10-29 04:13:22,779 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 549 transitions. Word has length 113 [2020-10-29 04:13:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:13:22,780 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 549 transitions. [2020-10-29 04:13:22,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 04:13:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 549 transitions. [2020-10-29 04:13:22,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 04:13:22,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:13:22,783 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 7, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:13:22,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 04:13:22,783 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:13:22,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:13:22,784 INFO L82 PathProgramCache]: Analyzing trace with hash 677646697, now seen corresponding path program 17 times [2020-10-29 04:13:22,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:13:22,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417583877] [2020-10-29 04:13:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:13:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:23,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:23,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:23,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:23,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:24,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:25,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:27,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:27,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 04:13:27,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:13:27,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:13:27,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:27,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 04:13:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:13:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 04:13:27,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:28,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:28,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:28,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:28,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:28,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:28,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:28,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:28,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:28,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:28,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:28,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:28,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:13:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:28,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:28,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:28,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:28,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:28,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:28,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:28,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:28,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:28,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:13:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:28,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:28,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:28,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:28,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:28,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:28,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:28,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:28,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:28,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:13:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:28,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:28,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:28,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:28,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:28,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:28,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:28,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:28,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:28,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:13:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:28,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:28,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:28,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:28,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:28,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:28,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:28,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:28,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:28,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:28,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:28,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 04:13:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:28,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:28,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:28,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:28,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:28,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:28,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:28,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:28,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 04:13:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:28,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:28,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:28,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:28,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:28,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:28,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:28,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:28,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 04:13:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:28,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:28,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:28,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:28,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:28,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:28,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:28,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:28,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:28,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:28,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:28,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:28,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 04:13:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:28,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:28,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:28,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:28,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:28,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:28,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:28,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:28,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:28,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 04:13:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:28,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:28,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:28,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:28,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:28,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:28,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:28,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:28,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:28,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:28,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:28,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:28,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 04:13:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:28,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:28,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:28,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:28,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:28,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:28,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:13:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 68 proven. 177 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-29 04:13:28,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417583877] [2020-10-29 04:13:28,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:28,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 04:13:28,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098389555] [2020-10-29 04:13:28,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 04:13:28,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:28,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 04:13:28,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:13:28,307 INFO L87 Difference]: Start difference. First operand 473 states and 549 transitions. Second operand 19 states. [2020-10-29 04:13:32,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:13:32,076 INFO L93 Difference]: Finished difference Result 598 states and 687 transitions. [2020-10-29 04:13:32,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 04:13:32,077 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-29 04:13:32,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:13:32,081 INFO L225 Difference]: With dead ends: 598 [2020-10-29 04:13:32,081 INFO L226 Difference]: Without dead ends: 581 [2020-10-29 04:13:32,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=253, Invalid=1553, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 04:13:32,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-29 04:13:32,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 473. [2020-10-29 04:13:32,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-29 04:13:32,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 548 transitions. [2020-10-29 04:13:32,213 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 548 transitions. Word has length 122 [2020-10-29 04:13:32,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:13:32,214 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 548 transitions. [2020-10-29 04:13:32,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 04:13:32,214 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 548 transitions. [2020-10-29 04:13:32,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 04:13:32,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:13:32,217 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 8, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:13:32,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 04:13:32,217 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:13:32,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:13:32,218 INFO L82 PathProgramCache]: Analyzing trace with hash -602216981, now seen corresponding path program 18 times [2020-10-29 04:13:32,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:13:32,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933886692] [2020-10-29 04:13:32,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:13:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:32,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:33,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 04:13:33,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:33,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-10-29 04:13:33,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:33,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:13:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:13:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 04:13:33,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:33,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:33,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:33,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:33,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:33,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:33,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:33,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:13:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:33,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:33,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:33,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:33,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:33,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:33,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:33,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:33,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:33,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:33,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:33,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:13:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:33,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:33,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:33,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:33,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:33,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:33,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:33,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:33,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:13:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:33,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:33,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:33,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:33,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:33,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:33,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:33,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:33,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:13:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:33,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:33,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:33,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:33,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:33,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:33,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:33,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:33,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:33,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:33,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 04:13:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:33,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:33,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:33,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:33,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:33,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:33,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:33,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:33,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:33,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:33,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:33,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 04:13:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:33,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:33,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:33,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:33,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:33,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:33,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:33,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:33,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 04:13:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:33,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:33,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:33,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:33,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:33,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:33,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:33,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:33,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:33,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:33,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 04:13:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:33,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:33,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:33,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:33,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:33,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:33,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:33,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:33,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:33,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:33,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:33,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 04:13:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:33,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:33,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:33,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:33,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:33,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:33,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:33,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:33,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 04:13:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:33,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:33,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:33,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:33,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:33,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:33,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:33,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:33,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:33,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:33,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 27 proven. 219 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-29 04:13:33,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933886692] [2020-10-29 04:13:33,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:33,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 04:13:33,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118247980] [2020-10-29 04:13:33,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 04:13:33,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:33,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 04:13:33,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:13:33,938 INFO L87 Difference]: Start difference. First operand 473 states and 548 transitions. Second operand 19 states. [2020-10-29 04:13:40,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:13:40,865 INFO L93 Difference]: Finished difference Result 729 states and 842 transitions. [2020-10-29 04:13:40,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-10-29 04:13:40,867 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-29 04:13:40,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:13:40,871 INFO L225 Difference]: With dead ends: 729 [2020-10-29 04:13:40,871 INFO L226 Difference]: Without dead ends: 712 [2020-10-29 04:13:40,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3433 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1057, Invalid=9043, Unknown=0, NotChecked=0, Total=10100 [2020-10-29 04:13:40,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-10-29 04:13:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 511. [2020-10-29 04:13:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-29 04:13:40,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 596 transitions. [2020-10-29 04:13:40,981 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 596 transitions. Word has length 122 [2020-10-29 04:13:40,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:13:40,982 INFO L481 AbstractCegarLoop]: Abstraction has 511 states and 596 transitions. [2020-10-29 04:13:40,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 04:13:40,982 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 596 transitions. [2020-10-29 04:13:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 04:13:40,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:13:40,985 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 8, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:13:40,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 04:13:40,986 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:13:40,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:13:40,986 INFO L82 PathProgramCache]: Analyzing trace with hash -946976731, now seen corresponding path program 4 times [2020-10-29 04:13:40,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:13:40,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795265068] [2020-10-29 04:13:40,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:13:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:41,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:41,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:41,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:41,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:41,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:41,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:41,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:43,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:46,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:46,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 04:13:46,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:13:46,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 04:13:46,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:46,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:46,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:13:46,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:13:46,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 04:13:46,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:46,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:46,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:46,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:46,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:46,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:46,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:46,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:46,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:46,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:46,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:46,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:13:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:46,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:46,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:46,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:46,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:46,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:46,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:46,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:46,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:46,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:46,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:46,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:46,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:13:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:46,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:46,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:46,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:46,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:46,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:46,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:46,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:46,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:46,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:13:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:46,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:46,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:46,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:46,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:46,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:46,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:46,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:46,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:46,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:46,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:46,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:46,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:13:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:46,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:46,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:46,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:46,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:46,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:46,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:46,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:46,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:46,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:46,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:46,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:46,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 04:13:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:46,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:46,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:46,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:46,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:46,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:46,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:46,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:46,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:46,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 04:13:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:46,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:46,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:46,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:46,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:46,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:46,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:46,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:46,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:46,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 04:13:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:46,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:46,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:46,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:46,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:46,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:46,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:46,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:46,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:46,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:46,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:46,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:46,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 04:13:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:46,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:46,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:46,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:46,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:46,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:46,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:46,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:46,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:46,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:46,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 04:13:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:46,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:46,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:46,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:46,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:46,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:46,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:46,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:46,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:46,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 04:13:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:46,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:46,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:46,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:46,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:46,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:46,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:46,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:46,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:46,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:46,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:46,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 18 proven. 228 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-29 04:13:46,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795265068] [2020-10-29 04:13:46,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:46,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 04:13:46,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825917850] [2020-10-29 04:13:46,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 04:13:46,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:46,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 04:13:46,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:13:46,711 INFO L87 Difference]: Start difference. First operand 511 states and 596 transitions. Second operand 21 states. [2020-10-29 04:13:54,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:13:54,716 INFO L93 Difference]: Finished difference Result 726 states and 840 transitions. [2020-10-29 04:13:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-10-29 04:13:54,718 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 122 [2020-10-29 04:13:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:13:54,724 INFO L225 Difference]: With dead ends: 726 [2020-10-29 04:13:54,724 INFO L226 Difference]: Without dead ends: 723 [2020-10-29 04:13:54,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3991 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1087, Invalid=10903, Unknown=0, NotChecked=0, Total=11990 [2020-10-29 04:13:54,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-10-29 04:13:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 536. [2020-10-29 04:13:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-29 04:13:54,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 626 transitions. [2020-10-29 04:13:54,856 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 626 transitions. Word has length 122 [2020-10-29 04:13:54,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:13:54,856 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 626 transitions. [2020-10-29 04:13:54,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 04:13:54,856 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 626 transitions. [2020-10-29 04:13:54,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-29 04:13:54,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:13:54,859 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 8, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:13:54,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 04:13:54,860 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:13:54,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:13:54,860 INFO L82 PathProgramCache]: Analyzing trace with hash 696811731, now seen corresponding path program 19 times [2020-10-29 04:13:54,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:13:54,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443664630] [2020-10-29 04:13:54,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:13:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:54,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:55,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:55,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 04:13:55,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:55,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-10-29 04:13:55,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:55,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:55,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:13:55,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:13:55,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 04:13:55,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:56,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:56,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:56,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:13:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:56,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:56,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:13:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:56,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:56,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:56,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:13:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:56,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:56,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:13:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:56,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:56,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:56,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 04:13:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:56,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:56,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 04:13:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:56,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:56,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:56,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 04:13:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:56,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:56,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:56,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 04:13:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:56,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:56,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 04:13:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:56,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 04:13:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:56,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:56,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:56,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 04:13:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:56,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:56,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,136 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 20 proven. 276 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-29 04:13:56,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443664630] [2020-10-29 04:13:56,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:56,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 04:13:56,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84292196] [2020-10-29 04:13:56,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 04:13:56,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:56,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 04:13:56,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:13:56,139 INFO L87 Difference]: Start difference. First operand 536 states and 626 transitions. Second operand 22 states. [2020-10-29 04:14:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:05,473 INFO L93 Difference]: Finished difference Result 764 states and 886 transitions. [2020-10-29 04:14:05,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-10-29 04:14:05,475 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 131 [2020-10-29 04:14:05,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:05,479 INFO L225 Difference]: With dead ends: 764 [2020-10-29 04:14:05,479 INFO L226 Difference]: Without dead ends: 761 [2020-10-29 04:14:05,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3964 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1117, Invalid=11093, Unknown=0, NotChecked=0, Total=12210 [2020-10-29 04:14:05,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-10-29 04:14:05,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 575. [2020-10-29 04:14:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-10-29 04:14:05,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 673 transitions. [2020-10-29 04:14:05,641 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 673 transitions. Word has length 131 [2020-10-29 04:14:05,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:05,641 INFO L481 AbstractCegarLoop]: Abstraction has 575 states and 673 transitions. [2020-10-29 04:14:05,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 04:14:05,642 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 673 transitions. [2020-10-29 04:14:05,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-29 04:14:05,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:05,645 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 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] [2020-10-29 04:14:05,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 04:14:05,645 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:05,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:05,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1503143327, now seen corresponding path program 7 times [2020-10-29 04:14:05,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:05,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163843048] [2020-10-29 04:14:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:05,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:06,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:06,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 04:14:06,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:06,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-29 04:14:06,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:06,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:14:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:14:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 04:14:06,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:07,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:07,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:07,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:07,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:07,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:07,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:14:07,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:07,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:07,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:07,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:07,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:07,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:07,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:14:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:07,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:07,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:07,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:07,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:07,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:07,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:07,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:07,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:07,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:07,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:07,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:07,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:14:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:07,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:07,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:07,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:07,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:07,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:14:07,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:07,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:07,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:07,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:07,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:07,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:14:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:07,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:07,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:07,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:07,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:07,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:07,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:07,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:07,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:07,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:14:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:07,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:07,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:07,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:07,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:07,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:14:07,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:07,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:07,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:07,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:07,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:07,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:07,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 04:14:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:07,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:07,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:07,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:07,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:07,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:14:07,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:07,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:07,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:07,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:07,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:07,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 04:14:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:07,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:07,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:07,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:07,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:07,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:14:07,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:07,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:07,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:07,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:07,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:07,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:07,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 04:14:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:07,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:07,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:07,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:07,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:14:07,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:07,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:07,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:07,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 04:14:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:07,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:07,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:07,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:07,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:07,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:07,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:07,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:07,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:07,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:07,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:07,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:07,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 04:14:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:07,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:07,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:07,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:07,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:07,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:07,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:07,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:07,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:07,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:07,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:07,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:07,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 04:14:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:07,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:07,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:07,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:07,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:07,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:07,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:07,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:07,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:07,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:07,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 04:14:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:07,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:07,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:07,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:07,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:07,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:07,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:07,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:07,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 30 proven. 266 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-29 04:14:07,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163843048] [2020-10-29 04:14:07,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:07,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 04:14:07,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319509511] [2020-10-29 04:14:07,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 04:14:07,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:07,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 04:14:07,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:14:07,336 INFO L87 Difference]: Start difference. First operand 575 states and 673 transitions. Second operand 20 states. [2020-10-29 04:14:17,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:17,188 INFO L93 Difference]: Finished difference Result 784 states and 908 transitions. [2020-10-29 04:14:17,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-10-29 04:14:17,190 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 131 [2020-10-29 04:14:17,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:17,195 INFO L225 Difference]: With dead ends: 784 [2020-10-29 04:14:17,195 INFO L226 Difference]: Without dead ends: 767 [2020-10-29 04:14:17,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3708 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1106, Invalid=10024, Unknown=0, NotChecked=0, Total=11130 [2020-10-29 04:14:17,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2020-10-29 04:14:17,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 580. [2020-10-29 04:14:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-10-29 04:14:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 679 transitions. [2020-10-29 04:14:17,313 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 679 transitions. Word has length 131 [2020-10-29 04:14:17,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:17,313 INFO L481 AbstractCegarLoop]: Abstraction has 580 states and 679 transitions. [2020-10-29 04:14:17,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 04:14:17,314 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 679 transitions. [2020-10-29 04:14:17,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 04:14:17,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:17,316 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 8, 4, 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] [2020-10-29 04:14:17,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 04:14:17,317 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:17,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:17,317 INFO L82 PathProgramCache]: Analyzing trace with hash 928426731, now seen corresponding path program 20 times [2020-10-29 04:14:17,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:17,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480663340] [2020-10-29 04:14:17,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:17,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:17,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:17,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:17,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:21,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:22,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:22,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 04:14:22,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:14:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 04:14:22,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:22,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 04:14:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 04:14:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:23,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:23,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 04:14:23,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:23,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:23,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:23,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:23,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:14:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:23,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:23,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:23,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:23,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:23,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:23,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:14:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:23,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:23,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:23,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:23,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:23,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:23,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:14:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:23,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:23,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:23,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:23,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:14:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:23,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:23,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:23,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:23,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:23,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 04:14:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:23,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:23,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:23,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:23,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 04:14:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:23,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:23,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:23,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:23,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 04:14:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:23,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:23,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:23,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:23,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 04:14:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:23,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:23,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:23,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:23,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 04:14:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:23,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:23,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:23,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:23,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 04:14:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:23,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:23,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:23,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:23,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 04:14:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:23,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:23,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:23,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:23,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-29 04:14:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:23,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:23,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:23,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:14:23,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:23,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 84 proven. 266 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2020-10-29 04:14:23,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480663340] [2020-10-29 04:14:23,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:23,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 04:14:23,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506666941] [2020-10-29 04:14:23,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 04:14:23,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:23,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 04:14:23,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:14:23,208 INFO L87 Difference]: Start difference. First operand 580 states and 679 transitions. Second operand 21 states.