/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/eca-rers2012/Problem11_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:46:01,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:46:01,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:46:01,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:46:01,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:46:01,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:46:01,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:46:01,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:46:01,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:46:01,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:46:01,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:46:01,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:46:01,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:46:01,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:46:01,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:46:01,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:46:01,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:46:01,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:46:01,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:46:01,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:46:01,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:46:01,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:46:01,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:46:01,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:46:01,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:46:01,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:46:01,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:46:01,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:46:01,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:46:01,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:46:01,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:46:01,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:46:01,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:46:01,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:46:01,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:46:01,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:46:01,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:46:01,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:46:01,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:46:01,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:46:01,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:46:01,448 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 06:46:01,494 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:46:01,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:46:01,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:46:01,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:46:01,496 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:46:01,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:46:01,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:46:01,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:46:01,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:46:01,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:46:01,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:46:01,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:46:01,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:46:01,498 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:46:01,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:46:01,498 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:46:01,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:46:01,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:46:01,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:46:01,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:46:01,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:46:01,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:46:01,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:46:01,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:46:01,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:46:01,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:46:01,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:46:01,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:46:01,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:46:01,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:46:01,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:46:01,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:46:01,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:46:01,954 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:46:01,956 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:46:01,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label24.c [2020-10-29 06:46:02,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9234bda5/57aa0e71b6954d3086c9d0aeb7cf266a/FLAGea0214e3a [2020-10-29 06:46:02,838 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:46:02,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label24.c [2020-10-29 06:46:02,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9234bda5/57aa0e71b6954d3086c9d0aeb7cf266a/FLAGea0214e3a [2020-10-29 06:46:03,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9234bda5/57aa0e71b6954d3086c9d0aeb7cf266a [2020-10-29 06:46:03,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:46:03,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:46:03,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:46:03,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:46:03,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:46:03,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:46:03" (1/1) ... [2020-10-29 06:46:03,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434b4690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:03, skipping insertion in model container [2020-10-29 06:46:03,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:46:03" (1/1) ... [2020-10-29 06:46:03,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:46:03,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:46:03,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:46:03,822 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:46:04,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:46:04,047 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:46:04,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:04 WrapperNode [2020-10-29 06:46:04,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:46:04,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:46:04,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:46:04,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:46:04,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:04" (1/1) ... [2020-10-29 06:46:04,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:04" (1/1) ... [2020-10-29 06:46:04,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:04" (1/1) ... [2020-10-29 06:46:04,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:04" (1/1) ... [2020-10-29 06:46:04,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:04" (1/1) ... [2020-10-29 06:46:04,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:04" (1/1) ... [2020-10-29 06:46:04,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:04" (1/1) ... [2020-10-29 06:46:04,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:46:04,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:46:04,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:46:04,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:46:04,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:04" (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 06:46:04,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:46:04,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:46:04,347 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:46:04,348 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:46:04,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:46:04,349 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:46:04,349 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:46:04,349 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:46:04,349 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:46:04,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:46:04,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:46:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:46:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:46:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:46:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:46:04,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:46:04,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:46:04,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:46:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:46:06,392 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:46:06,392 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:46:06,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:46:06 BoogieIcfgContainer [2020-10-29 06:46:06,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:46:06,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:46:06,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:46:06,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:46:06,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:46:03" (1/3) ... [2020-10-29 06:46:06,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7380e254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:46:06, skipping insertion in model container [2020-10-29 06:46:06,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:04" (2/3) ... [2020-10-29 06:46:06,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7380e254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:46:06, skipping insertion in model container [2020-10-29 06:46:06,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:46:06" (3/3) ... [2020-10-29 06:46:06,405 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label24.c [2020-10-29 06:46:06,418 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:46:06,425 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:46:06,439 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:46:06,471 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:46:06,471 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:46:06,471 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:46:06,472 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:46:06,472 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:46:06,472 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:46:06,472 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:46:06,472 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:46:06,498 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-29 06:46:06,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 06:46:06,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:06,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:06,509 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:06,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:06,516 INFO L82 PathProgramCache]: Analyzing trace with hash 362907144, now seen corresponding path program 1 times [2020-10-29 06:46:06,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:06,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579877555] [2020-10-29 06:46:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:06,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:07,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:07,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 06:46:07,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:07,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 785 [2020-10-29 06:46:07,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:07,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:46:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:07,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 06:46:07,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:46:07,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:07,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:07,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:07,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:07,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:07,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 06:46:07,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:07,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:07,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:07,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:07,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:07,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:07,825 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 06:46:07,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579877555] [2020-10-29 06:46:07,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:46:07,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:46:07,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387129024] [2020-10-29 06:46:07,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:46:07,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:07,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:46:07,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:46:07,860 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-29 06:46:11,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:11,252 INFO L93 Difference]: Finished difference Result 793 states and 1388 transitions. [2020-10-29 06:46:11,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:46:11,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-29 06:46:11,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:11,271 INFO L225 Difference]: With dead ends: 793 [2020-10-29 06:46:11,272 INFO L226 Difference]: Without dead ends: 432 [2020-10-29 06:46:11,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:46:11,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-29 06:46:11,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 426. [2020-10-29 06:46:11,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-29 06:46:11,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 613 transitions. [2020-10-29 06:46:11,373 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 613 transitions. Word has length 58 [2020-10-29 06:46:11,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:11,374 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 613 transitions. [2020-10-29 06:46:11,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:46:11,374 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 613 transitions. [2020-10-29 06:46:11,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 06:46:11,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:11,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:11,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:46:11,382 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:11,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:11,383 INFO L82 PathProgramCache]: Analyzing trace with hash 245201540, now seen corresponding path program 1 times [2020-10-29 06:46:11,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:11,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900722567] [2020-10-29 06:46:11,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:11,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:11,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:13,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:13,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 06:46:13,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:46:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2023 [2020-10-29 06:46:13,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:13,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:13,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:13,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 06:46:13,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 06:46:13,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:13,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:13,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:13,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:13,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:13,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:13,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:46:13,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:13,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:13,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:13,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:13,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:13,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:46:13,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:13,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:13,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:13,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:46:13,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:13,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 06:46:13,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:13,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:13,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:13,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:13,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:46:13,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:46:13,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900722567] [2020-10-29 06:46:13,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:13,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:46:13,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115093530] [2020-10-29 06:46:13,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:46:13,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:13,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:46:13,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:46:13,989 INFO L87 Difference]: Start difference. First operand 426 states and 613 transitions. Second operand 5 states. [2020-10-29 06:46:17,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:17,496 INFO L93 Difference]: Finished difference Result 1243 states and 1806 transitions. [2020-10-29 06:46:17,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:46:17,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-29 06:46:17,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:17,504 INFO L225 Difference]: With dead ends: 1243 [2020-10-29 06:46:17,504 INFO L226 Difference]: Without dead ends: 823 [2020-10-29 06:46:17,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:46:17,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-10-29 06:46:17,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 819. [2020-10-29 06:46:17,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-10-29 06:46:17,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1093 transitions. [2020-10-29 06:46:17,565 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1093 transitions. Word has length 130 [2020-10-29 06:46:17,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:17,566 INFO L481 AbstractCegarLoop]: Abstraction has 819 states and 1093 transitions. [2020-10-29 06:46:17,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:46:17,566 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1093 transitions. [2020-10-29 06:46:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-29 06:46:17,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:17,573 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:17,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:46:17,574 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:17,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:17,574 INFO L82 PathProgramCache]: Analyzing trace with hash 737884772, now seen corresponding path program 1 times [2020-10-29 06:46:17,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:17,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226624483] [2020-10-29 06:46:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:17,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:18,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:18,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 06:46:18,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:18,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-29 06:46:18,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:18,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:46:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:18,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:46:18,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:18,349 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 06:46:18,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:18,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:18,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:18,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:18,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 06:46:18,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:18,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:18,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:18,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:18,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:18,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:46:18,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:18,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 06:46:18,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:18,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:46:18,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:46:18,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226624483] [2020-10-29 06:46:18,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:46:18,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:46:18,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090755426] [2020-10-29 06:46:18,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:18,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:18,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:18,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:18,805 INFO L87 Difference]: Start difference. First operand 819 states and 1093 transitions. Second operand 7 states. [2020-10-29 06:46:22,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:22,620 INFO L93 Difference]: Finished difference Result 2047 states and 2793 transitions. [2020-10-29 06:46:22,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:46:22,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-29 06:46:22,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:22,632 INFO L225 Difference]: With dead ends: 2047 [2020-10-29 06:46:22,632 INFO L226 Difference]: Without dead ends: 1234 [2020-10-29 06:46:22,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:46:22,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2020-10-29 06:46:22,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1210. [2020-10-29 06:46:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-10-29 06:46:22,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1517 transitions. [2020-10-29 06:46:22,684 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1517 transitions. Word has length 131 [2020-10-29 06:46:22,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:22,684 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1517 transitions. [2020-10-29 06:46:22,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:22,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1517 transitions. [2020-10-29 06:46:22,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 06:46:22,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:22,690 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:22,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:46:22,691 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:22,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:22,691 INFO L82 PathProgramCache]: Analyzing trace with hash 278157307, now seen corresponding path program 1 times [2020-10-29 06:46:22,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:22,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442752716] [2020-10-29 06:46:22,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:22,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:23,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:23,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 06:46:23,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:23,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-29 06:46:23,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:23,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:23,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:23,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:46:23,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 06:46:23,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:23,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:23,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:23,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:23,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:23,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:46:23,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:23,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:23,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:23,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:23,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:23,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:23,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:46:23,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:23,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 06:46:23,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:23,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:23,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:23,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:46:23,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:23,661 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:46:23,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442752716] [2020-10-29 06:46:23,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:23,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:46:23,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022265978] [2020-10-29 06:46:23,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:46:23,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:23,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:46:23,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:46:23,670 INFO L87 Difference]: Start difference. First operand 1210 states and 1517 transitions. Second operand 5 states. [2020-10-29 06:46:26,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:26,999 INFO L93 Difference]: Finished difference Result 3211 states and 4155 transitions. [2020-10-29 06:46:26,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:46:27,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-29 06:46:27,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:27,016 INFO L225 Difference]: With dead ends: 3211 [2020-10-29 06:46:27,016 INFO L226 Difference]: Without dead ends: 2195 [2020-10-29 06:46:27,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:46:27,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2020-10-29 06:46:27,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 1988. [2020-10-29 06:46:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-29 06:46:27,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 2522 transitions. [2020-10-29 06:46:27,108 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 2522 transitions. Word has length 189 [2020-10-29 06:46:27,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:27,110 INFO L481 AbstractCegarLoop]: Abstraction has 1988 states and 2522 transitions. [2020-10-29 06:46:27,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:46:27,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 2522 transitions. [2020-10-29 06:46:27,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-29 06:46:27,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:27,119 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:27,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:46:27,121 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:27,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:27,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1475006380, now seen corresponding path program 1 times [2020-10-29 06:46:27,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:27,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199750537] [2020-10-29 06:46:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:27,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:27,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:27,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:28,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:32,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:32,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 06:46:32,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:46:32,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 06:46:32,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:32,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:32,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 06:46:32,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:46:32,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:32,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:32,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:32,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:32,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:32,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:32,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:46:32,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:32,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:32,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:32,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:32,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:32,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:32,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:46:32,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:32,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 06:46:32,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:32,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:46:32,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:32,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 06:46:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:32,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:32,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:32,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:46:32,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:32,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 06:46:32,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:32,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:32,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:32,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:32,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:46:32,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:46:32,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199750537] [2020-10-29 06:46:32,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:32,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:46:32,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381041100] [2020-10-29 06:46:32,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:32,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:32,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:32,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:32,814 INFO L87 Difference]: Start difference. First operand 1988 states and 2522 transitions. Second operand 7 states. [2020-10-29 06:46:37,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:37,360 INFO L93 Difference]: Finished difference Result 4794 states and 6108 transitions. [2020-10-29 06:46:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:46:37,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-29 06:46:37,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:37,379 INFO L225 Difference]: With dead ends: 4794 [2020-10-29 06:46:37,380 INFO L226 Difference]: Without dead ends: 3000 [2020-10-29 06:46:37,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:46:37,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-10-29 06:46:37,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2588. [2020-10-29 06:46:37,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2588 states. [2020-10-29 06:46:37,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 3258 transitions. [2020-10-29 06:46:37,498 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 3258 transitions. Word has length 224 [2020-10-29 06:46:37,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:37,499 INFO L481 AbstractCegarLoop]: Abstraction has 2588 states and 3258 transitions. [2020-10-29 06:46:37,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:37,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 3258 transitions. [2020-10-29 06:46:37,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-29 06:46:37,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:37,504 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:37,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:46:37,505 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:37,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:37,505 INFO L82 PathProgramCache]: Analyzing trace with hash 790616272, now seen corresponding path program 1 times [2020-10-29 06:46:37,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:37,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414188538] [2020-10-29 06:46:37,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:37,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:37,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:37,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:38,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:38,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:42,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:42,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 06:46:42,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:46:42,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 06:46:42,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:42,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:42,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:46:42,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:42,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 06:46:42,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:42,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:42,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:42,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:42,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:42,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:42,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 06:46:42,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:42,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:42,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:42,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:42,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:42,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:46:42,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:46:43,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-29 06:46:43,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:43,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:43,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:46:43,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:43,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 06:46:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:43,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:43,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:43,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 06:46:43,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:43,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-29 06:46:43,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:43,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:43,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:43,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:46:43,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:46:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:46:43,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414188538] [2020-10-29 06:46:43,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:43,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:46:43,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230721761] [2020-10-29 06:46:43,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:43,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:43,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:43,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:43,530 INFO L87 Difference]: Start difference. First operand 2588 states and 3258 transitions. Second operand 7 states. [2020-10-29 06:46:46,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:46,835 INFO L93 Difference]: Finished difference Result 6213 states and 8267 transitions. [2020-10-29 06:46:46,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:46:46,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-29 06:46:46,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:46,859 INFO L225 Difference]: With dead ends: 6213 [2020-10-29 06:46:46,859 INFO L226 Difference]: Without dead ends: 3819 [2020-10-29 06:46:46,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:46:46,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2020-10-29 06:46:46,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 3575. [2020-10-29 06:46:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3575 states. [2020-10-29 06:46:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3575 states to 3575 states and 4485 transitions. [2020-10-29 06:46:46,978 INFO L78 Accepts]: Start accepts. Automaton has 3575 states and 4485 transitions. Word has length 226 [2020-10-29 06:46:46,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:46,979 INFO L481 AbstractCegarLoop]: Abstraction has 3575 states and 4485 transitions. [2020-10-29 06:46:46,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:46,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3575 states and 4485 transitions. [2020-10-29 06:46:46,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-29 06:46:46,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:46,986 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:46,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:46:46,986 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:46,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:46,987 INFO L82 PathProgramCache]: Analyzing trace with hash -2072666994, now seen corresponding path program 1 times [2020-10-29 06:46:46,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:46,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189259580] [2020-10-29 06:46:46,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:47,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:47,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:49,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:49,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-29 06:46:49,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:46:49,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2390 [2020-10-29 06:46:49,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:49,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:49,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:46:49,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:49,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 06:46:49,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:49,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:49,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:49,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:49,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:49,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:49,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:46:49,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:49,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:49,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:49,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:50,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:50,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:46:50,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:50,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-29 06:46:50,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:50,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:46:50,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:50,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:46:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:50,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:50,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:50,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:46:50,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:50,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 06:46:50,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:50,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:46:50,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:50,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:46:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 86 proven. 83 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:46:50,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189259580] [2020-10-29 06:46:50,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:50,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:46:50,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367532905] [2020-10-29 06:46:50,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:46:50,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:50,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:46:50,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:46:50,875 INFO L87 Difference]: Start difference. First operand 3575 states and 4485 transitions. Second operand 9 states. [2020-10-29 06:46:52,544 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-29 06:46:54,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:54,390 INFO L93 Difference]: Finished difference Result 6099 states and 7921 transitions. [2020-10-29 06:46:54,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:46:54,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 247 [2020-10-29 06:46:54,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:54,416 INFO L225 Difference]: With dead ends: 6099 [2020-10-29 06:46:54,416 INFO L226 Difference]: Without dead ends: 3666 [2020-10-29 06:46:54,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:46:54,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2020-10-29 06:46:54,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3597. [2020-10-29 06:46:54,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3597 states. [2020-10-29 06:46:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 4524 transitions. [2020-10-29 06:46:54,578 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 4524 transitions. Word has length 247 [2020-10-29 06:46:54,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:54,579 INFO L481 AbstractCegarLoop]: Abstraction has 3597 states and 4524 transitions. [2020-10-29 06:46:54,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:46:54,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 4524 transitions. [2020-10-29 06:46:54,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-29 06:46:54,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:54,586 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:54,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:46:54,587 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:54,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:54,588 INFO L82 PathProgramCache]: Analyzing trace with hash 652178009, now seen corresponding path program 1 times [2020-10-29 06:46:54,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:54,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100972260] [2020-10-29 06:46:54,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:54,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:54,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:55,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:56,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:56,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-29 06:46:56,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:46:56,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1864 [2020-10-29 06:46:56,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:56,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:56,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:56,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:46:56,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 06:46:56,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:56,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:56,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:56,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:56,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:56,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:56,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:46:56,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:56,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:56,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:56,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:56,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:56,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:46:56,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:56,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 06:46:56,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:56,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:56,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:56,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:56,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:56,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:56,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:46:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:56,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:56,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 06:46:56,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:56,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 06:46:56,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:56,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 06:46:56,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:57,031 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-29 06:46:57,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100972260] [2020-10-29 06:46:57,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:57,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:46:57,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379552307] [2020-10-29 06:46:57,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:46:57,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:57,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:46:57,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:46:57,035 INFO L87 Difference]: Start difference. First operand 3597 states and 4524 transitions. Second operand 5 states. [2020-10-29 06:47:00,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:00,012 INFO L93 Difference]: Finished difference Result 7980 states and 10253 transitions. [2020-10-29 06:47:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:47:00,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-29 06:47:00,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:00,037 INFO L225 Difference]: With dead ends: 7980 [2020-10-29 06:47:00,038 INFO L226 Difference]: Without dead ends: 4577 [2020-10-29 06:47:00,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:47:00,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4577 states. [2020-10-29 06:47:00,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4577 to 4561. [2020-10-29 06:47:00,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4561 states. [2020-10-29 06:47:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4561 states to 4561 states and 5714 transitions. [2020-10-29 06:47:00,182 INFO L78 Accepts]: Start accepts. Automaton has 4561 states and 5714 transitions. Word has length 258 [2020-10-29 06:47:00,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:00,183 INFO L481 AbstractCegarLoop]: Abstraction has 4561 states and 5714 transitions. [2020-10-29 06:47:00,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:47:00,183 INFO L276 IsEmpty]: Start isEmpty. Operand 4561 states and 5714 transitions. [2020-10-29 06:47:00,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-29 06:47:00,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:00,191 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:00,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:47:00,191 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:00,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:00,192 INFO L82 PathProgramCache]: Analyzing trace with hash 339515630, now seen corresponding path program 1 times [2020-10-29 06:47:00,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:00,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81543063] [2020-10-29 06:47:00,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:00,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:00,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:02,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:02,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-29 06:47:02,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:47:02,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2055 [2020-10-29 06:47:02,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:02,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:02,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:47:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:47:02,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:02,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:02,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:02,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:02,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:02,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:02,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 06:47:02,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:02,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:02,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:02,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:02,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:02,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:02,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:02,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:02,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:02,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:02,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:02,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 06:47:02,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:02,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:02,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:02,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:02,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:47:02,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:02,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:02,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:03,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:03,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:47:03,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:03,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 06:47:03,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:03,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:03,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:03,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:03,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:47:03,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:03,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81543063] [2020-10-29 06:47:03,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:03,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:03,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862541732] [2020-10-29 06:47:03,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:03,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:03,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:03,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:03,245 INFO L87 Difference]: Start difference. First operand 4561 states and 5714 transitions. Second operand 7 states. [2020-10-29 06:47:06,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:06,812 INFO L93 Difference]: Finished difference Result 9910 states and 12473 transitions. [2020-10-29 06:47:06,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:47:06,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-10-29 06:47:06,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:06,841 INFO L225 Difference]: With dead ends: 9910 [2020-10-29 06:47:06,841 INFO L226 Difference]: Without dead ends: 5543 [2020-10-29 06:47:06,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5543 states. [2020-10-29 06:47:06,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5543 to 5519. [2020-10-29 06:47:06,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5519 states. [2020-10-29 06:47:07,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5519 states to 5519 states and 6782 transitions. [2020-10-29 06:47:07,009 INFO L78 Accepts]: Start accepts. Automaton has 5519 states and 6782 transitions. Word has length 268 [2020-10-29 06:47:07,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:07,010 INFO L481 AbstractCegarLoop]: Abstraction has 5519 states and 6782 transitions. [2020-10-29 06:47:07,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:07,011 INFO L276 IsEmpty]: Start isEmpty. Operand 5519 states and 6782 transitions. [2020-10-29 06:47:07,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-29 06:47:07,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:07,019 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:07,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:47:07,019 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:07,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:07,021 INFO L82 PathProgramCache]: Analyzing trace with hash 95103883, now seen corresponding path program 1 times [2020-10-29 06:47:07,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:07,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608491839] [2020-10-29 06:47:07,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:07,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:09,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:09,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-29 06:47:09,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:47:09,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1960 [2020-10-29 06:47:09,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:09,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:47:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:47:09,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:09,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:09,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:09,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:09,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:09,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:09,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:47:09,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:09,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:09,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:09,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:09,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:09,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:47:09,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:09,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 06:47:09,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:09,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:47:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:09,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:47:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:09,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:09,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:09,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:47:09,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:09,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 06:47:09,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:09,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:09,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:09,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:09,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:47:09,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:09,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608491839] [2020-10-29 06:47:09,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:09,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:09,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133640831] [2020-10-29 06:47:09,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:09,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:09,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:09,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:09,893 INFO L87 Difference]: Start difference. First operand 5519 states and 6782 transitions. Second operand 7 states. [2020-10-29 06:47:13,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:13,160 INFO L93 Difference]: Finished difference Result 9748 states and 12254 transitions. [2020-10-29 06:47:13,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:47:13,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-10-29 06:47:13,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:13,188 INFO L225 Difference]: With dead ends: 9748 [2020-10-29 06:47:13,188 INFO L226 Difference]: Without dead ends: 6157 [2020-10-29 06:47:13,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:47:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2020-10-29 06:47:13,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 6113. [2020-10-29 06:47:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6113 states. [2020-10-29 06:47:13,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6113 states to 6113 states and 7485 transitions. [2020-10-29 06:47:13,353 INFO L78 Accepts]: Start accepts. Automaton has 6113 states and 7485 transitions. Word has length 283 [2020-10-29 06:47:13,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:13,354 INFO L481 AbstractCegarLoop]: Abstraction has 6113 states and 7485 transitions. [2020-10-29 06:47:13,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 6113 states and 7485 transitions. [2020-10-29 06:47:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-29 06:47:13,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:13,363 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:13,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 06:47:13,363 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:13,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:13,364 INFO L82 PathProgramCache]: Analyzing trace with hash -241840938, now seen corresponding path program 1 times [2020-10-29 06:47:13,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:13,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398689055] [2020-10-29 06:47:13,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:13,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:13,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:15,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:15,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-29 06:47:15,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:47:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1608 [2020-10-29 06:47:15,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:15,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 06:47:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:47:15,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:15,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:15,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:15,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:15,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:15,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:15,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:47:15,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:15,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:15,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:15,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:15,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:15,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:15,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:15,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:15,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:15,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:47:15,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:15,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 06:47:15,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:15,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 06:47:15,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:15,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:47:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:15,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:15,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:15,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:47:15,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:15,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 06:47:15,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:15,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:47:15,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:15,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398689055] [2020-10-29 06:47:15,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:15,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:15,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047064147] [2020-10-29 06:47:15,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:15,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:15,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:15,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:15,820 INFO L87 Difference]: Start difference. First operand 6113 states and 7485 transitions. Second operand 7 states. [2020-10-29 06:47:19,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:19,509 INFO L93 Difference]: Finished difference Result 13051 states and 16075 transitions. [2020-10-29 06:47:19,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:47:19,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-29 06:47:19,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:19,539 INFO L225 Difference]: With dead ends: 13051 [2020-10-29 06:47:19,540 INFO L226 Difference]: Without dead ends: 7322 [2020-10-29 06:47:19,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:19,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7322 states. [2020-10-29 06:47:19,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7322 to 7092. [2020-10-29 06:47:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7092 states. [2020-10-29 06:47:19,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7092 states to 7092 states and 8601 transitions. [2020-10-29 06:47:19,722 INFO L78 Accepts]: Start accepts. Automaton has 7092 states and 8601 transitions. Word has length 299 [2020-10-29 06:47:19,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:19,723 INFO L481 AbstractCegarLoop]: Abstraction has 7092 states and 8601 transitions. [2020-10-29 06:47:19,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:19,723 INFO L276 IsEmpty]: Start isEmpty. Operand 7092 states and 8601 transitions. [2020-10-29 06:47:19,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-29 06:47:19,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:19,777 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:19,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 06:47:19,777 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:19,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:19,778 INFO L82 PathProgramCache]: Analyzing trace with hash 370373278, now seen corresponding path program 1 times [2020-10-29 06:47:19,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:19,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213943397] [2020-10-29 06:47:19,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:19,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:20,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:20,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-29 06:47:20,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:20,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-10-29 06:47:20,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:20,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-29 06:47:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 06:47:20,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:20,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:20,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:20,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:20,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:20,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:20,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:47:20,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:20,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:20,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:20,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:20,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:20,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:20,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:20,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:20,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 06:47:20,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:20,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:20,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:20,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:20,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:20,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:20,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:47:20,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:20,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 06:47:20,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:20,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:20,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:20,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:20,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 06:47:20,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:20,889 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-29 06:47:20,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213943397] [2020-10-29 06:47:20,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:20,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:47:20,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572331045] [2020-10-29 06:47:20,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:47:20,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:20,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:47:20,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:47:20,893 INFO L87 Difference]: Start difference. First operand 7092 states and 8601 transitions. Second operand 5 states. [2020-10-29 06:47:24,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:24,062 INFO L93 Difference]: Finished difference Result 15562 states and 19200 transitions. [2020-10-29 06:47:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:47:24,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-29 06:47:24,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:24,098 INFO L225 Difference]: With dead ends: 15562 [2020-10-29 06:47:24,098 INFO L226 Difference]: Without dead ends: 8854 [2020-10-29 06:47:24,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:47:24,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8854 states. [2020-10-29 06:47:24,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8854 to 8458. [2020-10-29 06:47:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8458 states. [2020-10-29 06:47:24,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8458 states to 8458 states and 10266 transitions. [2020-10-29 06:47:24,314 INFO L78 Accepts]: Start accepts. Automaton has 8458 states and 10266 transitions. Word has length 305 [2020-10-29 06:47:24,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:24,315 INFO L481 AbstractCegarLoop]: Abstraction has 8458 states and 10266 transitions. [2020-10-29 06:47:24,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:47:24,315 INFO L276 IsEmpty]: Start isEmpty. Operand 8458 states and 10266 transitions. [2020-10-29 06:47:24,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-29 06:47:24,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:24,331 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:24,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 06:47:24,332 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:24,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:24,332 INFO L82 PathProgramCache]: Analyzing trace with hash 75818365, now seen corresponding path program 1 times [2020-10-29 06:47:24,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:24,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526416147] [2020-10-29 06:47:24,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:24,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:24,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:24,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:25,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:25,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:25,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-29 06:47:25,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:47:25,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1153 [2020-10-29 06:47:25,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:25,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:47:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-29 06:47:25,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:25,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:25,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:25,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:25,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:25,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:25,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 06:47:25,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:25,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:25,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:25,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:25,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:47:25,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:25,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:25,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:25,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:25,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:25,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:47:25,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:47:25,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 06:47:25,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:25,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 06:47:25,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:25,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:47:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:25,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:26,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:26,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:47:26,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:47:26,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 06:47:26,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:26,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-29 06:47:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 06:47:26,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-29 06:47:26,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526416147] [2020-10-29 06:47:26,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:47:26,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:47:26,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871271083] [2020-10-29 06:47:26,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:47:26,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:26,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:47:26,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:47:26,289 INFO L87 Difference]: Start difference. First operand 8458 states and 10266 transitions. Second operand 6 states. [2020-10-29 06:47:28,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:28,572 INFO L93 Difference]: Finished difference Result 14214 states and 17411 transitions. [2020-10-29 06:47:28,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:47:28,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 348 [2020-10-29 06:47:28,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:28,600 INFO L225 Difference]: With dead ends: 14214 [2020-10-29 06:47:28,601 INFO L226 Difference]: Without dead ends: 8456 [2020-10-29 06:47:28,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:28,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8456 states. [2020-10-29 06:47:28,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8456 to 8439. [2020-10-29 06:47:28,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8439 states. [2020-10-29 06:47:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8439 states to 8439 states and 10218 transitions. [2020-10-29 06:47:28,821 INFO L78 Accepts]: Start accepts. Automaton has 8439 states and 10218 transitions. Word has length 348 [2020-10-29 06:47:28,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:28,822 INFO L481 AbstractCegarLoop]: Abstraction has 8439 states and 10218 transitions. [2020-10-29 06:47:28,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:47:28,822 INFO L276 IsEmpty]: Start isEmpty. Operand 8439 states and 10218 transitions. [2020-10-29 06:47:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-29 06:47:28,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:28,834 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:28,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 06:47:28,834 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:28,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:28,835 INFO L82 PathProgramCache]: Analyzing trace with hash -850533313, now seen corresponding path program 1 times [2020-10-29 06:47:28,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:28,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799321344] [2020-10-29 06:47:28,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:28,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:29,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:30,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:30,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-29 06:47:30,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:47:30,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1725 [2020-10-29 06:47:30,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:30,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:30,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:30,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:47:30,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:47:30,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:30,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:30,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:30,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:30,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:30,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:30,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:47:30,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:30,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:30,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:30,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:30,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:30,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:30,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:47:30,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:30,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 06:47:30,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:30,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:47:30,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:30,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:47:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:31,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:31,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:31,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 06:47:31,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 06:47:31,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:31,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 06:47:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:31,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-29 06:47:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:31,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:31,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:31,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:47:31,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:31,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:47:31,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:31,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 06:47:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:31,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 258 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 06:47:31,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799321344] [2020-10-29 06:47:31,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:31,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:31,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258791571] [2020-10-29 06:47:31,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:31,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:31,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:31,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:31,355 INFO L87 Difference]: Start difference. First operand 8439 states and 10218 transitions. Second operand 7 states. [2020-10-29 06:47:35,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:35,297 INFO L93 Difference]: Finished difference Result 20887 states and 25604 transitions. [2020-10-29 06:47:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:47:35,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-10-29 06:47:35,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:35,346 INFO L225 Difference]: With dead ends: 20887 [2020-10-29 06:47:35,346 INFO L226 Difference]: Without dead ends: 12832 [2020-10-29 06:47:35,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:35,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12832 states. [2020-10-29 06:47:35,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12832 to 11297. [2020-10-29 06:47:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11297 states. [2020-10-29 06:47:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11297 states to 11297 states and 13827 transitions. [2020-10-29 06:47:35,629 INFO L78 Accepts]: Start accepts. Automaton has 11297 states and 13827 transitions. Word has length 369 [2020-10-29 06:47:35,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:35,629 INFO L481 AbstractCegarLoop]: Abstraction has 11297 states and 13827 transitions. [2020-10-29 06:47:35,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:35,630 INFO L276 IsEmpty]: Start isEmpty. Operand 11297 states and 13827 transitions. [2020-10-29 06:47:35,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-29 06:47:35,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:35,653 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:35,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 06:47:35,654 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:35,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:35,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2057561507, now seen corresponding path program 1 times [2020-10-29 06:47:35,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:35,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182961659] [2020-10-29 06:47:35,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:35,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:35,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:36,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:37,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:37,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-29 06:47:37,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:37,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1840 [2020-10-29 06:47:37,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:37,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:37,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:47:37,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-29 06:47:37,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 06:47:37,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:37,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:37,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:37,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:37,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:37,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:47:37,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:37,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:37,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:37,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:37,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:37,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:37,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:37,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:37,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:37,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:47:37,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:37,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:47:37,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:37,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:37,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:37,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:47:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:37,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:37,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:37,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:47:37,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:37,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 06:47:37,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:37,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:37,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:37,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:37,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:47:37,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:37,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:47:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:37,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:38,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:38,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 06:47:38,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:38,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 06:47:38,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:38,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:38,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:38,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:38,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 06:47:38,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 284 proven. 51 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-29 06:47:38,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182961659] [2020-10-29 06:47:38,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:38,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:47:38,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336184086] [2020-10-29 06:47:38,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:47:38,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:38,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:47:38,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:47:38,207 INFO L87 Difference]: Start difference. First operand 11297 states and 13827 transitions. Second operand 6 states. [2020-10-29 06:47:41,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:41,315 INFO L93 Difference]: Finished difference Result 19222 states and 24007 transitions. [2020-10-29 06:47:41,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:47:41,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 372 [2020-10-29 06:47:41,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:41,356 INFO L225 Difference]: With dead ends: 19222 [2020-10-29 06:47:41,357 INFO L226 Difference]: Without dead ends: 11383 [2020-10-29 06:47:41,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:47:41,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11383 states. [2020-10-29 06:47:41,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11383 to 11293. [2020-10-29 06:47:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11293 states. [2020-10-29 06:47:41,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11293 states to 11293 states and 13383 transitions. [2020-10-29 06:47:41,633 INFO L78 Accepts]: Start accepts. Automaton has 11293 states and 13383 transitions. Word has length 372 [2020-10-29 06:47:41,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:41,634 INFO L481 AbstractCegarLoop]: Abstraction has 11293 states and 13383 transitions. [2020-10-29 06:47:41,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:47:41,634 INFO L276 IsEmpty]: Start isEmpty. Operand 11293 states and 13383 transitions. [2020-10-29 06:47:41,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-29 06:47:41,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:41,648 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:41,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 06:47:41,648 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:41,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:41,649 INFO L82 PathProgramCache]: Analyzing trace with hash -570209548, now seen corresponding path program 1 times [2020-10-29 06:47:41,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:41,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671331709] [2020-10-29 06:47:41,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:41,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:41,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:42,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:42,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:46,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:46,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:46,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-29 06:47:46,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:47:46,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 06:47:46,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:46,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:46,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 06:47:46,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:47:46,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-29 06:47:46,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:46,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:46,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:46,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:46,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:46,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:46,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:47:46,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:46,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:46,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:46,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:46,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:46,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:46,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:46,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:47,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:47,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:47,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:47,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 06:47:47,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:47,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:47:47,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:47,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:47,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:47,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:47,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 06:47:47,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:47:47,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 06:47:47,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:47,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:47,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:47,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:47,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:47:47,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:47,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-29 06:47:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:47,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:47,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:47:47,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:47,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 06:47:47,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:47,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:47:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:47:47,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 233 proven. 61 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-29 06:47:47,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671331709] [2020-10-29 06:47:47,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:47,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:47:47,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142145058] [2020-10-29 06:47:47,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:47:47,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:47,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:47:47,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:47:47,668 INFO L87 Difference]: Start difference. First operand 11293 states and 13383 transitions. Second operand 8 states. [2020-10-29 06:47:52,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:52,111 INFO L93 Difference]: Finished difference Result 23776 states and 28294 transitions. [2020-10-29 06:47:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:47:52,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 377 [2020-10-29 06:47:52,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:52,152 INFO L225 Difference]: With dead ends: 23776 [2020-10-29 06:47:52,152 INFO L226 Difference]: Without dead ends: 12867 [2020-10-29 06:47:52,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-29 06:47:52,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2020-10-29 06:47:52,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12819. [2020-10-29 06:47:52,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12819 states. [2020-10-29 06:47:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12819 states to 12819 states and 15044 transitions. [2020-10-29 06:47:52,467 INFO L78 Accepts]: Start accepts. Automaton has 12819 states and 15044 transitions. Word has length 377 [2020-10-29 06:47:52,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:52,468 INFO L481 AbstractCegarLoop]: Abstraction has 12819 states and 15044 transitions. [2020-10-29 06:47:52,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:47:52,468 INFO L276 IsEmpty]: Start isEmpty. Operand 12819 states and 15044 transitions. [2020-10-29 06:47:52,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-29 06:47:52,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:52,485 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:52,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 06:47:52,485 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:52,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:52,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1910177300, now seen corresponding path program 1 times [2020-10-29 06:47:52,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:52,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630152765] [2020-10-29 06:47:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:52,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:53,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:54,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-29 06:47:54,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:47:54,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2031 [2020-10-29 06:47:54,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:54,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:54,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:47:54,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:47:54,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 343 [2020-10-29 06:47:54,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:54,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:54,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:54,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:54,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:54,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:47:54,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:54,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:47:54,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:54,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:54,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:55,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:55,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:47:55,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:55,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 06:47:55,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:55,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:47:55,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:55,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:47:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:55,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:55,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:55,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:47:55,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:55,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 06:47:55,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:55,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:55,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:47:55,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:55,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:47:55,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:55,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:47:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:55,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:55,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:55,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 06:47:55,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:55,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 06:47:55,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:55,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:55,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:55,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:55,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 06:47:55,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 238 proven. 85 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-29 06:47:55,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630152765] [2020-10-29 06:47:55,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:55,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:47:55,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796595798] [2020-10-29 06:47:55,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:47:55,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:55,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:47:55,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:47:55,558 INFO L87 Difference]: Start difference. First operand 12819 states and 15044 transitions. Second operand 10 states. [2020-10-29 06:48:03,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:03,942 INFO L93 Difference]: Finished difference Result 30238 states and 36620 transitions. [2020-10-29 06:48:03,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 06:48:03,943 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 391 [2020-10-29 06:48:03,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:04,012 INFO L225 Difference]: With dead ends: 30238 [2020-10-29 06:48:04,012 INFO L226 Difference]: Without dead ends: 20667 [2020-10-29 06:48:04,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-29 06:48:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20667 states. [2020-10-29 06:48:04,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20667 to 19525. [2020-10-29 06:48:04,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19525 states. [2020-10-29 06:48:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19525 states to 19525 states and 22879 transitions. [2020-10-29 06:48:04,520 INFO L78 Accepts]: Start accepts. Automaton has 19525 states and 22879 transitions. Word has length 391 [2020-10-29 06:48:04,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:04,521 INFO L481 AbstractCegarLoop]: Abstraction has 19525 states and 22879 transitions. [2020-10-29 06:48:04,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:48:04,521 INFO L276 IsEmpty]: Start isEmpty. Operand 19525 states and 22879 transitions. [2020-10-29 06:48:04,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-29 06:48:04,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:04,538 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:48:04,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 06:48:04,539 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:04,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:04,540 INFO L82 PathProgramCache]: Analyzing trace with hash 663866102, now seen corresponding path program 1 times [2020-10-29 06:48:04,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:04,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426900871] [2020-10-29 06:48:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:04,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:04,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:05,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:06,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:06,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-29 06:48:06,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:48:06,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1816 [2020-10-29 06:48:06,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:06,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:48:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-29 06:48:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 06:48:06,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:06,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:06,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:06,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:06,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:06,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:06,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:48:06,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:06,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:06,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:06,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:06,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:06,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:06,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:06,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:06,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:06,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:48:06,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:06,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 06:48:06,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:06,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:06,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:06,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:06,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:06,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:06,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:48:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:06,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:06,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:06,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:06,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:06,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 06:48:06,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:06,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:06,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:06,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:06,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 06:48:06,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:06,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 06:48:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:06,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:06,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:07,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:07,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 06:48:07,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 06:48:07,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:07,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 06:48:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 276 proven. 51 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-29 06:48:07,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426900871] [2020-10-29 06:48:07,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:07,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:48:07,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015220081] [2020-10-29 06:48:07,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:48:07,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:07,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:48:07,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:48:07,174 INFO L87 Difference]: Start difference. First operand 19525 states and 22879 transitions. Second operand 6 states. [2020-10-29 06:48:11,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:11,051 INFO L93 Difference]: Finished difference Result 36975 states and 43694 transitions. [2020-10-29 06:48:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:48:11,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 395 [2020-10-29 06:48:11,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:11,117 INFO L225 Difference]: With dead ends: 36975 [2020-10-29 06:48:11,117 INFO L226 Difference]: Without dead ends: 21482 [2020-10-29 06:48:11,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:48:11,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21482 states. [2020-10-29 06:48:11,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21482 to 21247. [2020-10-29 06:48:11,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21247 states. [2020-10-29 06:48:11,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21247 states to 21247 states and 24849 transitions. [2020-10-29 06:48:11,624 INFO L78 Accepts]: Start accepts. Automaton has 21247 states and 24849 transitions. Word has length 395 [2020-10-29 06:48:11,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:11,627 INFO L481 AbstractCegarLoop]: Abstraction has 21247 states and 24849 transitions. [2020-10-29 06:48:11,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:48:11,627 INFO L276 IsEmpty]: Start isEmpty. Operand 21247 states and 24849 transitions. [2020-10-29 06:48:11,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-10-29 06:48:11,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:11,654 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:11,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 06:48:11,654 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:11,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:11,655 INFO L82 PathProgramCache]: Analyzing trace with hash 928049846, now seen corresponding path program 1 times [2020-10-29 06:48:11,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:11,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019598012] [2020-10-29 06:48:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:11,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:12,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:13,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:13,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:13,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-29 06:48:13,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:48:13,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1707 [2020-10-29 06:48:13,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:13,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 06:48:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-29 06:48:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-29 06:48:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:13,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:13,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:13,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:13,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:13,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:13,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:48:13,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:13,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:13,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:13,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:13,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:13,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:13,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:48:13,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:13,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 06:48:13,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:13,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:13,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:13,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:48:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:13,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:13,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:13,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:13,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:13,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 06:48:13,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:13,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 06:48:13,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:13,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 06:48:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:13,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:13,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:13,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 06:48:13,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:13,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 06:48:13,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:13,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:13,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:13,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:13,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 06:48:13,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:14,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-29 06:48:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:14,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:14,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:14,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:48:14,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 06:48:14,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:14,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:48:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:48:14,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:14,409 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 415 proven. 168 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-29 06:48:14,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019598012] [2020-10-29 06:48:14,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:14,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:48:14,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940433147] [2020-10-29 06:48:14,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:48:14,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:14,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:48:14,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:48:14,412 INFO L87 Difference]: Start difference. First operand 21247 states and 24849 transitions. Second operand 9 states. [2020-10-29 06:48:20,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:20,747 INFO L93 Difference]: Finished difference Result 49034 states and 58935 transitions. [2020-10-29 06:48:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 06:48:20,748 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 463 [2020-10-29 06:48:20,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:20,820 INFO L225 Difference]: With dead ends: 49034 [2020-10-29 06:48:20,820 INFO L226 Difference]: Without dead ends: 28171 [2020-10-29 06:48:20,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:48:20,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28171 states. [2020-10-29 06:48:21,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28171 to 24139. [2020-10-29 06:48:21,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24139 states. [2020-10-29 06:48:21,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24139 states to 24139 states and 28348 transitions. [2020-10-29 06:48:21,449 INFO L78 Accepts]: Start accepts. Automaton has 24139 states and 28348 transitions. Word has length 463 [2020-10-29 06:48:21,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:21,449 INFO L481 AbstractCegarLoop]: Abstraction has 24139 states and 28348 transitions. [2020-10-29 06:48:21,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:48:21,450 INFO L276 IsEmpty]: Start isEmpty. Operand 24139 states and 28348 transitions. [2020-10-29 06:48:21,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-29 06:48:21,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:21,476 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:21,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 06:48:21,477 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:21,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:21,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1820881175, now seen corresponding path program 1 times [2020-10-29 06:48:21,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:21,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626582563] [2020-10-29 06:48:21,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:21,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:21,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:23,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:23,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-29 06:48:23,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:23,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2323 [2020-10-29 06:48:23,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:23,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 361 [2020-10-29 06:48:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:48:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:24,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:24,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:24,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:24,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:24,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:48:24,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:24,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:24,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:24,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:24,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:24,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:24,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:24,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:24,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:24,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:24,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 06:48:24,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:24,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:24,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:24,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:24,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:24,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:24,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:24,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:48:24,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:24,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 06:48:24,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:24,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:24,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:24,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:48:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:24,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:24,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:24,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 06:48:24,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:24,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 06:48:24,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:24,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:48:24,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:24,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-29 06:48:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:24,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:24,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:24,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:48:24,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:24,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 06:48:24,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:24,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:24,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:24,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:24,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:48:24,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 420 proven. 2 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-10-29 06:48:24,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626582563] [2020-10-29 06:48:24,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:24,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:24,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454214478] [2020-10-29 06:48:24,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:24,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:24,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:24,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:24,948 INFO L87 Difference]: Start difference. First operand 24139 states and 28348 transitions. Second operand 7 states. [2020-10-29 06:48:25,832 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 06:48:29,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:29,568 INFO L93 Difference]: Finished difference Result 46410 states and 54852 transitions. [2020-10-29 06:48:29,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:48:29,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 478 [2020-10-29 06:48:29,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:29,618 INFO L225 Difference]: With dead ends: 46410 [2020-10-29 06:48:29,618 INFO L226 Difference]: Without dead ends: 24961 [2020-10-29 06:48:29,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:48:29,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24961 states. [2020-10-29 06:48:30,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24961 to 24517. [2020-10-29 06:48:30,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24517 states. [2020-10-29 06:48:30,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24517 states to 24517 states and 28740 transitions. [2020-10-29 06:48:30,147 INFO L78 Accepts]: Start accepts. Automaton has 24517 states and 28740 transitions. Word has length 478 [2020-10-29 06:48:30,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:30,148 INFO L481 AbstractCegarLoop]: Abstraction has 24517 states and 28740 transitions. [2020-10-29 06:48:30,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:30,148 INFO L276 IsEmpty]: Start isEmpty. Operand 24517 states and 28740 transitions. [2020-10-29 06:48:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-10-29 06:48:30,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:30,165 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:48:30,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 06:48:30,166 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:30,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:30,166 INFO L82 PathProgramCache]: Analyzing trace with hash -565024503, now seen corresponding path program 1 times [2020-10-29 06:48:30,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:30,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819496154] [2020-10-29 06:48:30,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:30,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:30,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:32,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:32,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 525 [2020-10-29 06:48:32,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:32,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2143 [2020-10-29 06:48:32,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:32,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:32,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:32,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-29 06:48:32,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 06:48:32,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:32,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:32,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:32,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:32,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:32,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:32,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:48:32,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:32,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:32,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:32,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:32,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:32,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:32,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:32,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:32,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:48:32,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:32,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:32,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:32,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:32,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:32,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:32,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:32,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:32,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:32,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:48:32,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:32,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 06:48:32,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:32,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:32,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:32,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:32,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 06:48:32,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:32,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:48:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:32,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:32,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:32,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 06:48:32,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 06:48:32,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:32,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 06:48:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:32,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-29 06:48:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:33,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:33,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:33,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:48:33,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:33,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:48:33,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:33,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 06:48:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:33,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 421 proven. 72 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-29 06:48:33,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819496154] [2020-10-29 06:48:33,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:33,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:33,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689121809] [2020-10-29 06:48:33,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:33,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:33,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:33,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:33,353 INFO L87 Difference]: Start difference. First operand 24517 states and 28740 transitions. Second operand 7 states. [2020-10-29 06:48:37,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:37,468 INFO L93 Difference]: Finished difference Result 49825 states and 58942 transitions. [2020-10-29 06:48:37,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:48:37,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 507 [2020-10-29 06:48:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:37,521 INFO L225 Difference]: With dead ends: 49825 [2020-10-29 06:48:37,521 INFO L226 Difference]: Without dead ends: 28382 [2020-10-29 06:48:37,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:48:37,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28382 states. [2020-10-29 06:48:37,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28382 to 27361. [2020-10-29 06:48:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27361 states. [2020-10-29 06:48:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27361 states to 27361 states and 31881 transitions. [2020-10-29 06:48:38,062 INFO L78 Accepts]: Start accepts. Automaton has 27361 states and 31881 transitions. Word has length 507 [2020-10-29 06:48:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:38,063 INFO L481 AbstractCegarLoop]: Abstraction has 27361 states and 31881 transitions. [2020-10-29 06:48:38,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:38,063 INFO L276 IsEmpty]: Start isEmpty. Operand 27361 states and 31881 transitions. [2020-10-29 06:48:38,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2020-10-29 06:48:38,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:38,089 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:38,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 06:48:38,089 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:38,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:38,090 INFO L82 PathProgramCache]: Analyzing trace with hash 313921430, now seen corresponding path program 1 times [2020-10-29 06:48:38,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:38,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350649277] [2020-10-29 06:48:38,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:38,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:38,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:39,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:41,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:41,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 552 [2020-10-29 06:48:41,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:48:41,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2893 [2020-10-29 06:48:41,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:41,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:41,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:41,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-29 06:48:41,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 06:48:41,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:41,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:41,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:41,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:48:41,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:41,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:41,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:41,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:41,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:41,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 06:48:41,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:41,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 06:48:41,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:41,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:41,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:41,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:41,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:41,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:41,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 06:48:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:41,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:41,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:41,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 06:48:41,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:41,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 06:48:41,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:41,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-29 06:48:41,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:41,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-29 06:48:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:41,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:41,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:41,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 06:48:41,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 06:48:41,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:41,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-29 06:48:41,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 453 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-29 06:48:42,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350649277] [2020-10-29 06:48:42,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:42,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:42,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403637967] [2020-10-29 06:48:42,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:42,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:42,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:42,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:42,119 INFO L87 Difference]: Start difference. First operand 27361 states and 31881 transitions. Second operand 7 states. [2020-10-29 06:48:47,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:47,582 INFO L93 Difference]: Finished difference Result 54375 states and 63184 transitions. [2020-10-29 06:48:47,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:48:47,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 536 [2020-10-29 06:48:47,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:47,660 INFO L225 Difference]: With dead ends: 54375 [2020-10-29 06:48:47,661 INFO L226 Difference]: Without dead ends: 27398 [2020-10-29 06:48:47,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:48:47,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27398 states. [2020-10-29 06:48:48,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27398 to 26769. [2020-10-29 06:48:48,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26769 states. [2020-10-29 06:48:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26769 states to 26769 states and 30806 transitions. [2020-10-29 06:48:48,120 INFO L78 Accepts]: Start accepts. Automaton has 26769 states and 30806 transitions. Word has length 536 [2020-10-29 06:48:48,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:48,121 INFO L481 AbstractCegarLoop]: Abstraction has 26769 states and 30806 transitions. [2020-10-29 06:48:48,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:48,121 INFO L276 IsEmpty]: Start isEmpty. Operand 26769 states and 30806 transitions. [2020-10-29 06:48:48,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2020-10-29 06:48:48,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:48,141 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:48,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 06:48:48,141 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:48,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:48,142 INFO L82 PathProgramCache]: Analyzing trace with hash -199562143, now seen corresponding path program 1 times [2020-10-29 06:48:48,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:48,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024675275] [2020-10-29 06:48:48,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:48,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:48,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:48,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:49,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:50,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:50,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:52,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:52,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 556 [2020-10-29 06:48:52,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 06:48:52,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4245 [2020-10-29 06:48:52,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:52,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:48:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 491 [2020-10-29 06:48:52,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:52,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:52,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:52,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:52,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:52,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:52,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:48:52,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:52,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:52,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:52,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:48:52,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:52,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:52,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:52,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:52,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:52,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:52,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:52,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 06:48:52,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:52,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:52,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 06:48:52,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:52,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:52,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:53,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:53,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:53,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:48:53,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:53,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 06:48:53,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:53,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:53,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:53,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:53,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 06:48:53,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:53,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-29 06:48:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:53,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:53,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:53,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:53,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 06:48:53,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:53,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 06:48:53,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:53,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-29 06:48:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 06:48:53,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 152 proven. 4 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2020-10-29 06:48:53,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024675275] [2020-10-29 06:48:53,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:53,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:48:53,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544882625] [2020-10-29 06:48:53,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:48:53,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:53,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:48:53,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:48:53,600 INFO L87 Difference]: Start difference. First operand 26769 states and 30806 transitions. Second operand 6 states. [2020-10-29 06:48:56,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:56,186 INFO L93 Difference]: Finished difference Result 49747 states and 57390 transitions. [2020-10-29 06:48:56,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:48:56,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 540 [2020-10-29 06:48:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:56,232 INFO L225 Difference]: With dead ends: 49747 [2020-10-29 06:48:56,233 INFO L226 Difference]: Without dead ends: 26050 [2020-10-29 06:48:56,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:56,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26050 states. [2020-10-29 06:48:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26050 to 25989. [2020-10-29 06:48:56,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25989 states. [2020-10-29 06:48:56,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25989 states to 25989 states and 29840 transitions. [2020-10-29 06:48:56,656 INFO L78 Accepts]: Start accepts. Automaton has 25989 states and 29840 transitions. Word has length 540 [2020-10-29 06:48:56,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:56,656 INFO L481 AbstractCegarLoop]: Abstraction has 25989 states and 29840 transitions. [2020-10-29 06:48:56,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:48:56,657 INFO L276 IsEmpty]: Start isEmpty. Operand 25989 states and 29840 transitions. [2020-10-29 06:48:56,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-10-29 06:48:56,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:56,680 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:56,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 06:48:56,681 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:56,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:56,681 INFO L82 PathProgramCache]: Analyzing trace with hash -911068931, now seen corresponding path program 1 times [2020-10-29 06:48:56,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:56,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168509422] [2020-10-29 06:48:56,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:56,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:57,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:58,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:58,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-29 06:48:58,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:58,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2116 [2020-10-29 06:48:58,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:58,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:58,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 06:48:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 442 [2020-10-29 06:48:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 06:48:58,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:59,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:59,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:59,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:59,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:59,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:59,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:48:59,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:59,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:59,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:59,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:59,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:59,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 06:48:59,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:59,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 06:48:59,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:59,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:59,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:59,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:59,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 06:48:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:59,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:59,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:59,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 06:48:59,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:59,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 06:48:59,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:59,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:59,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:59,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-29 06:48:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:59,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:59,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:59,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 06:48:59,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 06:48:59,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:59,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:48:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:59,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-10-29 06:48:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:59,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:59,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:59,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:48:59,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:59,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 06:48:59,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:59,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:48:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:48:59,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:59,676 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 370 proven. 52 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-10-29 06:48:59,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168509422] [2020-10-29 06:48:59,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:59,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:48:59,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586694736] [2020-10-29 06:48:59,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:48:59,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:59,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:48:59,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:48:59,679 INFO L87 Difference]: Start difference. First operand 25989 states and 29840 transitions. Second operand 8 states. [2020-10-29 06:49:05,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:05,689 INFO L93 Difference]: Finished difference Result 60096 states and 69156 transitions. [2020-10-29 06:49:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:49:05,691 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 559 [2020-10-29 06:49:05,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:05,760 INFO L225 Difference]: With dead ends: 60096 [2020-10-29 06:49:05,760 INFO L226 Difference]: Without dead ends: 35257 [2020-10-29 06:49:05,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:49:05,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35257 states. [2020-10-29 06:49:06,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35257 to 33821. [2020-10-29 06:49:06,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33821 states. [2020-10-29 06:49:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33821 states to 33821 states and 38615 transitions. [2020-10-29 06:49:06,298 INFO L78 Accepts]: Start accepts. Automaton has 33821 states and 38615 transitions. Word has length 559 [2020-10-29 06:49:06,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:06,299 INFO L481 AbstractCegarLoop]: Abstraction has 33821 states and 38615 transitions. [2020-10-29 06:49:06,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:49:06,299 INFO L276 IsEmpty]: Start isEmpty. Operand 33821 states and 38615 transitions. [2020-10-29 06:49:06,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2020-10-29 06:49:06,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:06,325 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:06,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 06:49:06,325 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:06,326 INFO L82 PathProgramCache]: Analyzing trace with hash 403041248, now seen corresponding path program 1 times [2020-10-29 06:49:06,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:06,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952474806] [2020-10-29 06:49:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:06,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:07,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:07,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 589 [2020-10-29 06:49:07,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:07,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1166 [2020-10-29 06:49:07,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:07,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:07,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:07,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-29 06:49:07,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 06:49:07,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:07,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:07,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:07,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:07,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:07,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:07,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:49:07,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:07,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:07,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:07,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:07,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:07,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:07,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:49:07,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:07,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:49:07,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:07,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:07,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:49:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:07,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:07,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:07,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:49:07,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:07,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 06:49:07,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:07,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:07,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:07,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:07,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:49:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:07,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:08,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:08,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 06:49:08,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:08,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 06:49:08,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:08,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:49:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:08,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-29 06:49:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:08,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:08,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:08,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:49:08,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:08,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 06:49:08,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:08,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:08,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:08,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:49:08,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:08,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-29 06:49:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:08,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:08,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:08,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 06:49:08,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-29 06:49:08,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:08,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-29 06:49:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 521 proven. 85 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-10-29 06:49:08,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952474806] [2020-10-29 06:49:08,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:08,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:08,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962120844] [2020-10-29 06:49:08,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:08,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:08,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:08,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:08,635 INFO L87 Difference]: Start difference. First operand 33821 states and 38615 transitions. Second operand 7 states. [2020-10-29 06:49:13,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:13,240 INFO L93 Difference]: Finished difference Result 67547 states and 77346 transitions. [2020-10-29 06:49:13,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:49:13,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 569 [2020-10-29 06:49:13,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:13,308 INFO L225 Difference]: With dead ends: 67547 [2020-10-29 06:49:13,309 INFO L226 Difference]: Without dead ends: 35446 [2020-10-29 06:49:13,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:49:13,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35446 states. [2020-10-29 06:49:13,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35446 to 34785. [2020-10-29 06:49:13,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34785 states. [2020-10-29 06:49:13,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34785 states to 34785 states and 39672 transitions. [2020-10-29 06:49:13,846 INFO L78 Accepts]: Start accepts. Automaton has 34785 states and 39672 transitions. Word has length 569 [2020-10-29 06:49:13,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:13,846 INFO L481 AbstractCegarLoop]: Abstraction has 34785 states and 39672 transitions. [2020-10-29 06:49:13,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:13,846 INFO L276 IsEmpty]: Start isEmpty. Operand 34785 states and 39672 transitions. [2020-10-29 06:49:13,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2020-10-29 06:49:13,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:13,873 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:13,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 06:49:13,874 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:13,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:13,874 INFO L82 PathProgramCache]: Analyzing trace with hash 44414080, now seen corresponding path program 1 times [2020-10-29 06:49:13,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:13,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312890146] [2020-10-29 06:49:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:14,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:14,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:14,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 634 [2020-10-29 06:49:14,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:14,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 904 [2020-10-29 06:49:14,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:14,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:14,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:14,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-29 06:49:14,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 06:49:14,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:15,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:15,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:15,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:15,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:15,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:49:15,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:15,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:15,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:15,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:15,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:15,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:15,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:15,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:15,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:15,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:49:15,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:49:15,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:15,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:15,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:49:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:15,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:15,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:15,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:49:15,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:15,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:49:15,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:15,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:15,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:15,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:15,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:15,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:15,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:49:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:15,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:15,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:15,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 06:49:15,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:15,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 06:49:15,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:15,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:15,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:15,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:49:15,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:15,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-29 06:49:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:15,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:15,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:15,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:49:15,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:15,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 06:49:15,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:15,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:15,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:15,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:15,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:49:15,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:15,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-29 06:49:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:15,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:15,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:15,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 06:49:15,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:15,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 06:49:15,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:15,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-29 06:49:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:15,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1238 backedges. 567 proven. 120 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-10-29 06:49:16,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312890146] [2020-10-29 06:49:16,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:16,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:49:16,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059579293] [2020-10-29 06:49:16,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:49:16,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:16,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:49:16,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:49:16,153 INFO L87 Difference]: Start difference. First operand 34785 states and 39672 transitions. Second operand 8 states. [2020-10-29 06:49:20,656 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-29 06:49:22,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:22,632 INFO L93 Difference]: Finished difference Result 71775 states and 82010 transitions. [2020-10-29 06:49:22,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:49:22,634 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 614 [2020-10-29 06:49:22,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:22,709 INFO L225 Difference]: With dead ends: 71775 [2020-10-29 06:49:22,710 INFO L226 Difference]: Without dead ends: 37184 [2020-10-29 06:49:22,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-29 06:49:22,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37184 states. [2020-10-29 06:49:23,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37184 to 36523. [2020-10-29 06:49:23,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36523 states. [2020-10-29 06:49:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36523 states to 36523 states and 41466 transitions. [2020-10-29 06:49:23,273 INFO L78 Accepts]: Start accepts. Automaton has 36523 states and 41466 transitions. Word has length 614 [2020-10-29 06:49:23,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:23,273 INFO L481 AbstractCegarLoop]: Abstraction has 36523 states and 41466 transitions. [2020-10-29 06:49:23,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:49:23,274 INFO L276 IsEmpty]: Start isEmpty. Operand 36523 states and 41466 transitions. [2020-10-29 06:49:23,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2020-10-29 06:49:23,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:23,295 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:23,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 06:49:23,296 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:23,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:23,296 INFO L82 PathProgramCache]: Analyzing trace with hash -428389795, now seen corresponding path program 1 times [2020-10-29 06:49:23,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:23,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116375722] [2020-10-29 06:49:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:23,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:23,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:23,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:26,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:28,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:28,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 650 [2020-10-29 06:49:28,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:49:28,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 06:49:28,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:28,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 06:49:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 379 [2020-10-29 06:49:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-29 06:49:28,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:28,684 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 06:49:28,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:28,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:28,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:28,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:28,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:28,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:49:28,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:28,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:28,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:28,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:28,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:28,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:49:28,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:28,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:28,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:49:28,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:28,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 06:49:28,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:28,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:28,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:49:28,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:49:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:28,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:28,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:28,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:49:28,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:28,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 06:49:28,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:28,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:28,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:28,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:28,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:49:28,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:49:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:29,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:29,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:29,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 06:49:29,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:29,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-29 06:49:29,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:29,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 06:49:29,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:29,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-10-29 06:49:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:29,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:29,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:49:29,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:29,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 06:49:29,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:29,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:49:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:49:29,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:29,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-29 06:49:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:29,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:29,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:29,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 06:49:29,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:29,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 06:49:29,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:29,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 06:49:29,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:29,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 827 proven. 6 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-29 06:49:29,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116375722] [2020-10-29 06:49:29,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:29,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:49:29,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279609073] [2020-10-29 06:49:29,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:49:29,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:29,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:49:29,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:49:29,881 INFO L87 Difference]: Start difference. First operand 36523 states and 41466 transitions. Second operand 9 states.