/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=SHALLOWEST --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/Problem16_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:53:27,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:53:27,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:53:27,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:53:27,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:53:27,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:53:27,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:53:27,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:53:27,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:53:27,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:53:27,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:53:27,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:53:27,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:53:27,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:53:27,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:53:27,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:53:27,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:53:27,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:53:27,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:53:27,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:53:27,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:53:27,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:53:27,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:53:27,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:53:27,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:53:27,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:53:27,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:53:27,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:53:27,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:53:27,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:53:27,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:53:27,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:53:27,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:53:27,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:53:27,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:53:27,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:53:27,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:53:27,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:53:27,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:53:27,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:53:27,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:53:27,415 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 [2020-10-26 23:53:27,444 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:53:27,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:53:27,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:53:27,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:53:27,447 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:53:27,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:53:27,448 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:53:27,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:53:27,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:53:27,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:53:27,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:53:27,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:53:27,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:53:27,450 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:53:27,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:53:27,450 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:53:27,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:53:27,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:53:27,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:53:27,451 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:53:27,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:53:27,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:53:27,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:53:27,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:53:27,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:53:27,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:53:27,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:53:27,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:53:27,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:53:27,454 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:53:28,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:53:28,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:53:28,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:53:28,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:53:28,088 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:53:28,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label13.c [2020-10-26 23:53:28,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0bd22229/8a12da555a5249b3ac747ea8d91f7525/FLAG3de0363b1 [2020-10-26 23:53:29,076 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:53:29,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label13.c [2020-10-26 23:53:29,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0bd22229/8a12da555a5249b3ac747ea8d91f7525/FLAG3de0363b1 [2020-10-26 23:53:29,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0bd22229/8a12da555a5249b3ac747ea8d91f7525 [2020-10-26 23:53:29,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:53:29,240 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:53:29,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:53:29,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:53:29,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:53:29,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:53:29" (1/1) ... [2020-10-26 23:53:29,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea86f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:29, skipping insertion in model container [2020-10-26 23:53:29,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:53:29" (1/1) ... [2020-10-26 23:53:29,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:53:29,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:53:30,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:53:30,101 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:53:30,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:53:30,351 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:53:30,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:30 WrapperNode [2020-10-26 23:53:30,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:53:30,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:53:30,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:53:30,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:53:30,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:30" (1/1) ... [2020-10-26 23:53:30,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:30" (1/1) ... [2020-10-26 23:53:30,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:30" (1/1) ... [2020-10-26 23:53:30,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:30" (1/1) ... [2020-10-26 23:53:30,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:30" (1/1) ... [2020-10-26 23:53:30,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:30" (1/1) ... [2020-10-26 23:53:30,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:30" (1/1) ... [2020-10-26 23:53:30,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:53:30,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:53:30,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:53:30,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:53:30,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:30" (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 [2020-10-26 23:53:30,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:53:30,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:53:30,667 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:53:30,667 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:53:30,667 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:53:30,667 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:53:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:53:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:53:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:53:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:53:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:53:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:53:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:53:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:53:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:53:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:53:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:53:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:53:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:53:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:53:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:53:34,100 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:53:34,100 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:53:34,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:53:34 BoogieIcfgContainer [2020-10-26 23:53:34,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:53:34,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:53:34,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:53:34,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:53:34,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:53:29" (1/3) ... [2020-10-26 23:53:34,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de292f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:53:34, skipping insertion in model container [2020-10-26 23:53:34,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:30" (2/3) ... [2020-10-26 23:53:34,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de292f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:53:34, skipping insertion in model container [2020-10-26 23:53:34,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:53:34" (3/3) ... [2020-10-26 23:53:34,113 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label13.c [2020-10-26 23:53:34,127 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:53:34,133 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:53:34,149 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:53:34,181 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:53:34,182 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:53:34,182 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:53:34,182 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:53:34,182 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:53:34,182 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:53:34,182 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:53:34,183 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:53:34,229 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:53:34,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-26 23:53:34,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:34,244 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, 1, 1, 1, 1, 1] [2020-10-26 23:53:34,244 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:34,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:34,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1038310316, now seen corresponding path program 1 times [2020-10-26 23:53:34,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:34,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641416349] [2020-10-26 23:53:34,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:34,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:35,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:35,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:53:35,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:35,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-10-26 23:53:35,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:35,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:53:35,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:53:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-26 23:53:35,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:53:35,287 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:53:35,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:35,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:35,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:35,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:35,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:35,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:53:35,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:35,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:35,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:35,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:53:35,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:53:35,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641416349] [2020-10-26 23:53:35,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:53:35,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:53:35,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219874707] [2020-10-26 23:53:35,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:53:35,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:35,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:53:35,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:53:35,404 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-26 23:53:36,282 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:53:45,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:45,545 INFO L93 Difference]: Finished difference Result 1520 states and 2856 transitions. [2020-10-26 23:53:45,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:53:45,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-26 23:53:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:45,575 INFO L225 Difference]: With dead ends: 1520 [2020-10-26 23:53:45,575 INFO L226 Difference]: Without dead ends: 1039 [2020-10-26 23:53:45,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:45,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-26 23:53:45,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-26 23:53:45,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-26 23:53:45,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1620 transitions. [2020-10-26 23:53:45,770 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1620 transitions. Word has length 63 [2020-10-26 23:53:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:45,772 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1620 transitions. [2020-10-26 23:53:45,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:53:45,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1620 transitions. [2020-10-26 23:53:45,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-26 23:53:45,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:45,792 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, 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] [2020-10-26 23:53:45,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:53:45,793 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:45,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:45,794 INFO L82 PathProgramCache]: Analyzing trace with hash 2113077989, now seen corresponding path program 1 times [2020-10-26 23:53:45,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:45,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642559965] [2020-10-26 23:53:45,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:45,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:46,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:47,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:47,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-26 23:53:47,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:53:47,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1952 [2020-10-26 23:53:47,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:47,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:53:47,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:53:47,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:53:47,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:53:48,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:48,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:48,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:48,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:48,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:48,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:53:48,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:48,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:53:48,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:53:48,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:48,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:48,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:48,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:48,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:53:48,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:53:48,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-26 23:53:48,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:48,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:53:48,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:53:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:53:48,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642559965] [2020-10-26 23:53:48,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:48,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:53:48,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046230778] [2020-10-26 23:53:48,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:53:48,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:48,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:53:48,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:53:48,759 INFO L87 Difference]: Start difference. First operand 1032 states and 1620 transitions. Second operand 6 states. [2020-10-26 23:53:48,910 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:53:55,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:55,232 INFO L93 Difference]: Finished difference Result 3115 states and 4964 transitions. [2020-10-26 23:53:55,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:53:55,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2020-10-26 23:53:55,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:55,249 INFO L225 Difference]: With dead ends: 3115 [2020-10-26 23:53:55,250 INFO L226 Difference]: Without dead ends: 2089 [2020-10-26 23:53:55,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:53:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-10-26 23:53:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 2067. [2020-10-26 23:53:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2067 states. [2020-10-26 23:53:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 2947 transitions. [2020-10-26 23:53:55,344 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 2947 transitions. Word has length 198 [2020-10-26 23:53:55,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:55,346 INFO L481 AbstractCegarLoop]: Abstraction has 2067 states and 2947 transitions. [2020-10-26 23:53:55,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:53:55,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 2947 transitions. [2020-10-26 23:53:55,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-26 23:53:55,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:55,357 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, 4, 4, 4, 4, 4, 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] [2020-10-26 23:53:55,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:53:55,357 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:55,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:55,358 INFO L82 PathProgramCache]: Analyzing trace with hash -2052237865, now seen corresponding path program 1 times [2020-10-26 23:53:55,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:55,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067204593] [2020-10-26 23:53:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:55,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:55,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:56,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:56,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:56,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:00,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:00,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:00,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:00,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-26 23:54:00,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:54:00,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-26 23:54:00,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:54:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:54:00,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:54:00,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:00,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:00,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:00,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:00,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:54:00,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:00,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:00,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:00,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:00,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:00,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:01,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:01,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:54:01,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:01,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-26 23:54:01,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:01,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:54:01,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:01,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:54:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:01,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:01,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:01,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:54:01,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:01,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:54:01,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:01,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:01,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:01,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:54:01,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:01,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-26 23:54:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:01,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:01,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:01,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 23:54:01,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:01,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:54:01,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-26 23:54:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:01,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 170 proven. 155 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-26 23:54:01,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067204593] [2020-10-26 23:54:01,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:01,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:54:01,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859958752] [2020-10-26 23:54:01,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:54:01,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:01,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:54:01,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:54:01,663 INFO L87 Difference]: Start difference. First operand 2067 states and 2947 transitions. Second operand 8 states. [2020-10-26 23:54:05,401 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:54:09,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:09,718 INFO L93 Difference]: Finished difference Result 5200 states and 7668 transitions. [2020-10-26 23:54:09,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:54:09,722 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 342 [2020-10-26 23:54:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:09,748 INFO L225 Difference]: With dead ends: 5200 [2020-10-26 23:54:09,748 INFO L226 Difference]: Without dead ends: 3139 [2020-10-26 23:54:09,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:54:09,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-10-26 23:54:09,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 2759. [2020-10-26 23:54:09,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2759 states. [2020-10-26 23:54:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 3886 transitions. [2020-10-26 23:54:09,871 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 3886 transitions. Word has length 342 [2020-10-26 23:54:09,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:09,873 INFO L481 AbstractCegarLoop]: Abstraction has 2759 states and 3886 transitions. [2020-10-26 23:54:09,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:54:09,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 3886 transitions. [2020-10-26 23:54:09,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-26 23:54:09,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:09,884 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, 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, 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] [2020-10-26 23:54:09,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:54:09,884 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:09,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:09,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1775607491, now seen corresponding path program 1 times [2020-10-26 23:54:09,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:09,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342430712] [2020-10-26 23:54:09,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:09,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:10,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:10,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:10,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:14,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:14,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-26 23:54:14,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:54:14,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-26 23:54:14,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:14,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:54:14,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:14,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 223 [2020-10-26 23:54:14,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:15,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:15,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:15,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:15,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:15,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:15,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:54:15,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:15,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:15,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:15,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:15,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:15,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:15,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:54:15,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:15,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-26 23:54:15,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:15,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:54:15,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:15,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:54:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:15,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:15,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:15,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:54:15,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:15,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-26 23:54:15,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:15,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 23:54:15,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:54:16,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-26 23:54:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:16,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:16,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:16,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 23:54:16,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:16,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:54:16,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:16,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:16,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-26 23:54:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:16,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:16,435 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 265 proven. 205 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 23:54:16,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342430712] [2020-10-26 23:54:16,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:16,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:54:16,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077980727] [2020-10-26 23:54:16,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:54:16,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:16,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:54:16,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:54:16,440 INFO L87 Difference]: Start difference. First operand 2759 states and 3886 transitions. Second operand 9 states. [2020-10-26 23:54:16,581 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:54:20,015 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:54:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:24,227 INFO L93 Difference]: Finished difference Result 6587 states and 9238 transitions. [2020-10-26 23:54:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:54:24,228 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 394 [2020-10-26 23:54:24,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:24,256 INFO L225 Difference]: With dead ends: 6587 [2020-10-26 23:54:24,256 INFO L226 Difference]: Without dead ends: 3834 [2020-10-26 23:54:24,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:54:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2020-10-26 23:54:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3456. [2020-10-26 23:54:24,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3456 states. [2020-10-26 23:54:24,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3456 states to 3456 states and 4414 transitions. [2020-10-26 23:54:24,381 INFO L78 Accepts]: Start accepts. Automaton has 3456 states and 4414 transitions. Word has length 394 [2020-10-26 23:54:24,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:24,381 INFO L481 AbstractCegarLoop]: Abstraction has 3456 states and 4414 transitions. [2020-10-26 23:54:24,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:54:24,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3456 states and 4414 transitions. [2020-10-26 23:54:24,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-10-26 23:54:24,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:24,402 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, 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, 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, 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] [2020-10-26 23:54:24,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:54:24,402 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:24,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:24,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1933922150, now seen corresponding path program 1 times [2020-10-26 23:54:24,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:24,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842053693] [2020-10-26 23:54:24,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:24,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:24,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:24,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:26,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:29,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:29,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-10-26 23:54:29,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:54:29,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-26 23:54:29,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:54:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:54:29,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:54:29,663 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:54:29,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:29,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:29,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:29,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:29,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:29,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:54:29,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:29,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:29,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:29,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:29,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:29,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:29,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:29,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:54:29,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:29,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 23:54:29,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:29,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:29,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:29,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:54:29,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:29,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:54:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:30,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:30,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:30,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:54:30,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:30,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:54:30,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:30,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:30,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:54:30,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:30,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:30,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-26 23:54:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:30,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:30,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:30,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:54:30,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:30,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:54:30,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:54:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:30,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:30,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-26 23:54:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:30,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:30,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 23:54:30,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:30,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:54:30,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:30,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-26 23:54:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:30,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:30,681 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 220 proven. 285 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2020-10-26 23:54:30,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842053693] [2020-10-26 23:54:30,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:30,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:54:30,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396661421] [2020-10-26 23:54:30,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:54:30,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:30,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:54:30,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:54:30,684 INFO L87 Difference]: Start difference. First operand 3456 states and 4414 transitions. Second operand 7 states. [2020-10-26 23:54:30,826 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:54:34,121 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:54:39,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:39,557 INFO L93 Difference]: Finished difference Result 10434 states and 13690 transitions. [2020-10-26 23:54:39,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:54:39,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 523 [2020-10-26 23:54:39,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:39,601 INFO L225 Difference]: With dead ends: 10434 [2020-10-26 23:54:39,601 INFO L226 Difference]: Without dead ends: 6984 [2020-10-26 23:54:39,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:54:39,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6984 states. [2020-10-26 23:54:39,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6984 to 6613. [2020-10-26 23:54:39,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6613 states. [2020-10-26 23:54:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6613 states to 6613 states and 8473 transitions. [2020-10-26 23:54:39,829 INFO L78 Accepts]: Start accepts. Automaton has 6613 states and 8473 transitions. Word has length 523 [2020-10-26 23:54:39,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:39,829 INFO L481 AbstractCegarLoop]: Abstraction has 6613 states and 8473 transitions. [2020-10-26 23:54:39,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:54:39,829 INFO L276 IsEmpty]: Start isEmpty. Operand 6613 states and 8473 transitions. [2020-10-26 23:54:39,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2020-10-26 23:54:39,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:39,851 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:54:39,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:54:39,852 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:39,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:39,853 INFO L82 PathProgramCache]: Analyzing trace with hash 926851193, now seen corresponding path program 1 times [2020-10-26 23:54:39,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:39,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580332952] [2020-10-26 23:54:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:40,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:40,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:44,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:45,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:45,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 559 [2020-10-26 23:54:45,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:54:45,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-26 23:54:45,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:54:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-26 23:54:45,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:54:45,454 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:54:45,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:45,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:45,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:45,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:45,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:54:45,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:45,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:45,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:45,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:45,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:45,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:46,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:46,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:54:46,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:46,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1128 [2020-10-26 23:54:46,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:46,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:54:46,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:47,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-26 23:54:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:47,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:47,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:47,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:54:47,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:47,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:54:47,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:47,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:47,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:54:47,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:47,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:47,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-26 23:54:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:47,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:47,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:47,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 23:54:47,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:47,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:54:47,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-26 23:54:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:47,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:47,954 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 165 proven. 221 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-26 23:54:47,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580332952] [2020-10-26 23:54:47,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:47,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:54:47,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154798624] [2020-10-26 23:54:47,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:54:47,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:47,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:54:47,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:54:47,966 INFO L87 Difference]: Start difference. First operand 6613 states and 8473 transitions. Second operand 8 states. [2020-10-26 23:54:48,171 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-26 23:54:48,413 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-26 23:54:53,263 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-26 23:54:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:56,264 INFO L93 Difference]: Finished difference Result 13705 states and 18095 transitions. [2020-10-26 23:54:56,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:54:56,265 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 543 [2020-10-26 23:54:56,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:56,308 INFO L225 Difference]: With dead ends: 13705 [2020-10-26 23:54:56,308 INFO L226 Difference]: Without dead ends: 7098 [2020-10-26 23:54:56,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:54:56,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7098 states. [2020-10-26 23:54:56,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7098 to 6983. [2020-10-26 23:54:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6983 states. [2020-10-26 23:54:56,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6983 states to 6983 states and 8899 transitions. [2020-10-26 23:54:56,563 INFO L78 Accepts]: Start accepts. Automaton has 6983 states and 8899 transitions. Word has length 543 [2020-10-26 23:54:56,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:56,564 INFO L481 AbstractCegarLoop]: Abstraction has 6983 states and 8899 transitions. [2020-10-26 23:54:56,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:54:56,564 INFO L276 IsEmpty]: Start isEmpty. Operand 6983 states and 8899 transitions. [2020-10-26 23:54:56,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2020-10-26 23:54:56,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:56,581 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:54:56,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:54:56,582 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:56,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:56,583 INFO L82 PathProgramCache]: Analyzing trace with hash -231257934, now seen corresponding path program 1 times [2020-10-26 23:54:56,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:56,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893733934] [2020-10-26 23:54:56,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:56,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:57,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:58,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:59,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:59,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:01,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:01,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 652 [2020-10-26 23:55:01,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:55:01,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-26 23:55:01,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:55:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-26 23:55:01,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:01,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:01,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:01,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:01,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:01,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:01,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:55:01,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:01,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:01,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:01,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:01,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:01,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:02,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:02,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:02,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:55:02,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:02,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:55:02,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:02,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:02,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:02,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:55:02,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:55:02,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:55:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:02,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:02,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:02,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:02,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:55:02,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:02,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-10-26 23:55:02,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:02,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:02,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:02,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:55:02,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:03,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-26 23:55:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:03,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:03,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:55:03,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:03,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:55:03,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:55:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:03,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:03,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-10-26 23:55:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:03,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:03,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:03,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 23:55:03,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:55:03,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-26 23:55:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:03,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:55:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 316 proven. 227 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2020-10-26 23:55:04,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893733934] [2020-10-26 23:55:04,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:04,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:55:04,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942796436] [2020-10-26 23:55:04,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:55:04,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:04,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:55:04,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:55:04,603 INFO L87 Difference]: Start difference. First operand 6983 states and 8899 transitions. Second operand 6 states. [2020-10-26 23:55:05,136 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-26 23:55:05,554 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 23:55:10,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:10,701 INFO L93 Difference]: Finished difference Result 13773 states and 17696 transitions. [2020-10-26 23:55:10,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:55:10,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 634 [2020-10-26 23:55:10,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:10,740 INFO L225 Difference]: With dead ends: 13773 [2020-10-26 23:55:10,740 INFO L226 Difference]: Without dead ends: 7035 [2020-10-26 23:55:10,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:55:10,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7035 states. [2020-10-26 23:55:10,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7035 to 6970. [2020-10-26 23:55:10,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6970 states. [2020-10-26 23:55:10,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6970 states to 6970 states and 8486 transitions. [2020-10-26 23:55:10,958 INFO L78 Accepts]: Start accepts. Automaton has 6970 states and 8486 transitions. Word has length 634 [2020-10-26 23:55:10,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:10,959 INFO L481 AbstractCegarLoop]: Abstraction has 6970 states and 8486 transitions. [2020-10-26 23:55:10,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:55:10,959 INFO L276 IsEmpty]: Start isEmpty. Operand 6970 states and 8486 transitions. [2020-10-26 23:55:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2020-10-26 23:55:10,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:10,979 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:10,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:55:10,979 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:10,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:10,981 INFO L82 PathProgramCache]: Analyzing trace with hash 618635722, now seen corresponding path program 1 times [2020-10-26 23:55:10,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:10,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828758757] [2020-10-26 23:55:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:11,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:12,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:12,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:14,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:16,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:16,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 680 [2020-10-26 23:55:16,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:55:16,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-26 23:55:16,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:55:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:55:16,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:16,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:16,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:16,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:16,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:16,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:16,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:55:16,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:16,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:16,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:16,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:16,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:16,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:16,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:16,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:16,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:55:16,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:16,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 23:55:16,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:16,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:16,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:16,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:55:16,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:16,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:55:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:16,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:16,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:16,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:55:16,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:16,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-26 23:55:16,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:16,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:16,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:16,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:55:16,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:16,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-26 23:55:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:17,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:17,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:17,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:55:17,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:17,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:55:17,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:55:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:17,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:17,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-26 23:55:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:17,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:17,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:17,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 23:55:17,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:17,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:55:17,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-26 23:55:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:17,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 354 proven. 227 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-26 23:55:17,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828758757] [2020-10-26 23:55:17,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:17,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:17,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029502140] [2020-10-26 23:55:17,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:17,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:17,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:17,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:17,716 INFO L87 Difference]: Start difference. First operand 6970 states and 8486 transitions. Second operand 7 states. [2020-10-26 23:55:17,873 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-26 23:55:22,175 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 23:55:25,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:25,098 INFO L93 Difference]: Finished difference Result 17032 states and 20874 transitions. [2020-10-26 23:55:25,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:55:25,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 662 [2020-10-26 23:55:25,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:25,134 INFO L225 Difference]: With dead ends: 17032 [2020-10-26 23:55:25,134 INFO L226 Difference]: Without dead ends: 10405 [2020-10-26 23:55:25,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:55:25,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10405 states. [2020-10-26 23:55:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10405 to 10057. [2020-10-26 23:55:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10057 states. [2020-10-26 23:55:25,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10057 states to 10057 states and 11844 transitions. [2020-10-26 23:55:25,415 INFO L78 Accepts]: Start accepts. Automaton has 10057 states and 11844 transitions. Word has length 662 [2020-10-26 23:55:25,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:25,416 INFO L481 AbstractCegarLoop]: Abstraction has 10057 states and 11844 transitions. [2020-10-26 23:55:25,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:25,416 INFO L276 IsEmpty]: Start isEmpty. Operand 10057 states and 11844 transitions. [2020-10-26 23:55:25,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2020-10-26 23:55:25,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:25,439 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:25,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:55:25,439 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:25,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:25,440 INFO L82 PathProgramCache]: Analyzing trace with hash 2063875723, now seen corresponding path program 1 times [2020-10-26 23:55:25,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:25,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604903020] [2020-10-26 23:55:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:25,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:25,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:27,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:27,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:30,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:30,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 790 [2020-10-26 23:55:30,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:55:30,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:55:30,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:55:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:55:30,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:30,772 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:55:30,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:30,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:30,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:30,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:30,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:30,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:55:30,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:30,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:30,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:30,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:30,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:30,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:30,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:30,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:55:30,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:30,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:55:30,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:30,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:30,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:55:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:30,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:30,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:30,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:55:30,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:30,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:55:30,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:30,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:30,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:30,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:55:30,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:31,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:55:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:31,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:31,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:31,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:55:31,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:31,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 23:55:31,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:31,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:31,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:31,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:55:31,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:31,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-26 23:55:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:31,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:31,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:31,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:55:31,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:31,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:55:31,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:31,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:31,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:55:31,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:31,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:31,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:55:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:31,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:31,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:31,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 23:55:31,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:31,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:55:31,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:31,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:31,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-26 23:55:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:31,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1381 backedges. 519 proven. 227 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2020-10-26 23:55:32,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604903020] [2020-10-26 23:55:32,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:32,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:32,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099657360] [2020-10-26 23:55:32,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:32,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:32,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:32,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:32,007 INFO L87 Difference]: Start difference. First operand 10057 states and 11844 transitions. Second operand 7 states. [2020-10-26 23:55:32,146 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:55:36,044 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:55:38,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:38,726 INFO L93 Difference]: Finished difference Result 22184 states and 26532 transitions. [2020-10-26 23:55:38,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:55:38,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 770 [2020-10-26 23:55:38,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:38,769 INFO L225 Difference]: With dead ends: 22184 [2020-10-26 23:55:38,769 INFO L226 Difference]: Without dead ends: 12133 [2020-10-26 23:55:38,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:55:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12133 states. [2020-10-26 23:55:39,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12133 to 12113. [2020-10-26 23:55:39,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12113 states. [2020-10-26 23:55:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12113 states to 12113 states and 14492 transitions. [2020-10-26 23:55:39,106 INFO L78 Accepts]: Start accepts. Automaton has 12113 states and 14492 transitions. Word has length 770 [2020-10-26 23:55:39,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:39,107 INFO L481 AbstractCegarLoop]: Abstraction has 12113 states and 14492 transitions. [2020-10-26 23:55:39,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:39,108 INFO L276 IsEmpty]: Start isEmpty. Operand 12113 states and 14492 transitions. [2020-10-26 23:55:39,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 942 [2020-10-26 23:55:39,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:39,141 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, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:55:39,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:55:39,141 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:39,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:39,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1505096407, now seen corresponding path program 1 times [2020-10-26 23:55:39,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:39,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194162727] [2020-10-26 23:55:39,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:39,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:39,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:40,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:40,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:44,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:44,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 961 [2020-10-26 23:55:44,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:55:44,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-26 23:55:44,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:55:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-26 23:55:44,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:44,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:44,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:44,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:44,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:44,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:44,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:55:44,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:44,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:44,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:44,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:44,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:44,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:44,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:45,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:45,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:55:45,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:45,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-26 23:55:45,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:55:45,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:45,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:55:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:45,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:45,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:45,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:55:45,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:45,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-26 23:55:45,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:45,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:45,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:45,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:55:45,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:45,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-26 23:55:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:45,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:45,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:45,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:55:45,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:45,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:55:45,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-26 23:55:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:45,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:45,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-26 23:55:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:46,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:46,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:46,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:55:46,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:46,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:55:46,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:55:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:46,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:46,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-10-26 23:55:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:46,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:46,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-26 23:55:46,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:46,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:55:46,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-26 23:55:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:46,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 288 proven. 976 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-10-26 23:55:47,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194162727] [2020-10-26 23:55:47,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:47,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:55:47,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866762463] [2020-10-26 23:55:47,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:55:47,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:47,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:55:47,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:55:47,754 INFO L87 Difference]: Start difference. First operand 12113 states and 14492 transitions. Second operand 8 states. [2020-10-26 23:55:47,907 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:55:52,306 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:55:54,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:54,535 INFO L93 Difference]: Finished difference Result 25083 states and 30884 transitions. [2020-10-26 23:55:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:55:54,536 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 941 [2020-10-26 23:55:54,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:54,591 INFO L225 Difference]: With dead ends: 25083 [2020-10-26 23:55:54,591 INFO L226 Difference]: Without dead ends: 12976 [2020-10-26 23:55:54,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:55:54,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12976 states. [2020-10-26 23:55:54,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12976 to 12465. [2020-10-26 23:55:54,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12465 states. [2020-10-26 23:55:54,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12465 states to 12465 states and 14909 transitions. [2020-10-26 23:55:54,956 INFO L78 Accepts]: Start accepts. Automaton has 12465 states and 14909 transitions. Word has length 941 [2020-10-26 23:55:54,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:54,956 INFO L481 AbstractCegarLoop]: Abstraction has 12465 states and 14909 transitions. [2020-10-26 23:55:54,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:55:54,957 INFO L276 IsEmpty]: Start isEmpty. Operand 12465 states and 14909 transitions. [2020-10-26 23:55:54,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2020-10-26 23:55:54,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:54,992 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 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] [2020-10-26 23:55:54,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:55:54,992 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:54,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:54,993 INFO L82 PathProgramCache]: Analyzing trace with hash -666588406, now seen corresponding path program 1 times [2020-10-26 23:55:54,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:54,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231612445] [2020-10-26 23:55:54,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:55,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:55,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:56,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:00,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:00,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1058 [2020-10-26 23:56:00,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:56:00,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-26 23:56:00,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:00,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:56:00,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:56:00,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:00,611 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:56:00,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:00,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:00,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:00,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:00,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:00,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:56:00,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:00,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:00,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:00,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:00,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:00,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:00,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:00,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:00,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:00,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:56:00,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:00,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:00,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:56:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:00,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:00,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:00,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:56:00,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:00,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 23:56:00,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:00,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:00,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:00,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:56:00,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:00,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:56:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:01,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:01,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:01,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:01,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:01,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 23:56:01,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:01,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:01,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:56:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:01,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:01,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:01,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:56:01,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:01,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:56:01,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:01,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:01,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-26 23:56:01,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:01,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:01,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-26 23:56:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:01,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:01,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:01,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:01,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:01,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:56:01,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:01,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:01,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 783 [2020-10-26 23:56:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:01,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:01,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:01,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-26 23:56:01,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:56:01,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-26 23:56:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2141 backedges. 611 proven. 306 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2020-10-26 23:56:02,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231612445] [2020-10-26 23:56:02,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:02,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:02,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151367593] [2020-10-26 23:56:02,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:02,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:02,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:02,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:02,468 INFO L87 Difference]: Start difference. First operand 12465 states and 14909 transitions. Second operand 7 states. [2020-10-26 23:56:05,062 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 23:56:07,812 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 23:56:09,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:09,469 INFO L93 Difference]: Finished difference Result 25289 states and 30273 transitions. [2020-10-26 23:56:09,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:56:09,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1036 [2020-10-26 23:56:09,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:09,518 INFO L225 Difference]: With dead ends: 25289 [2020-10-26 23:56:09,518 INFO L226 Difference]: Without dead ends: 12830 [2020-10-26 23:56:09,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:56:09,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12830 states. [2020-10-26 23:56:09,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12830 to 12808. [2020-10-26 23:56:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12808 states. [2020-10-26 23:56:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12808 states to 12808 states and 15270 transitions. [2020-10-26 23:56:09,828 INFO L78 Accepts]: Start accepts. Automaton has 12808 states and 15270 transitions. Word has length 1036 [2020-10-26 23:56:09,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:09,829 INFO L481 AbstractCegarLoop]: Abstraction has 12808 states and 15270 transitions. [2020-10-26 23:56:09,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:09,829 INFO L276 IsEmpty]: Start isEmpty. Operand 12808 states and 15270 transitions. [2020-10-26 23:56:10,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2020-10-26 23:56:10,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:10,003 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 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] [2020-10-26 23:56:10,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:56:10,004 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:10,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:10,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1972844358, now seen corresponding path program 1 times [2020-10-26 23:56:10,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:10,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758686788] [2020-10-26 23:56:10,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:10,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:10,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:10,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:15,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:15,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1060 [2020-10-26 23:56:15,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:56:15,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-26 23:56:15,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:15,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:15,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-26 23:56:15,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:56:15,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:15,541 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:56:15,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:15,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:15,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:15,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:15,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:15,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:56:15,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:15,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:15,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:15,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:15,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:15,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:15,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:15,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:15,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:15,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:15,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:56:15,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:15,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:15,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:56:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:15,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:15,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:15,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:56:15,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:15,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-26 23:56:15,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:15,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:15,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:15,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:56:15,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:15,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:56:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:15,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:16,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:16,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:16,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:16,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-26 23:56:16,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:16,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:16,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:16,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:16,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:16,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:56:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:16,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:16,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:16,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:56:16,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:16,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:56:16,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:16,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:16,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-26 23:56:16,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:16,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:16,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-10-26 23:56:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:16,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:16,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:16,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:16,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:16,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:56:16,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:16,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:16,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 785 [2020-10-26 23:56:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:16,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:16,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:16,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-26 23:56:16,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:16,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:56:16,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-26 23:56:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:16,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:17,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2143 backedges. 611 proven. 306 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2020-10-26 23:56:17,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758686788] [2020-10-26 23:56:17,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:17,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:56:17,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360627214] [2020-10-26 23:56:17,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:56:17,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:17,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:56:17,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:56:17,376 INFO L87 Difference]: Start difference. First operand 12808 states and 15270 transitions. Second operand 8 states. [2020-10-26 23:56:17,537 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:56:22,280 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:56:25,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:25,008 INFO L93 Difference]: Finished difference Result 28718 states and 34320 transitions. [2020-10-26 23:56:25,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:56:25,015 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1038 [2020-10-26 23:56:25,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:25,067 INFO L225 Difference]: With dead ends: 28718 [2020-10-26 23:56:25,067 INFO L226 Difference]: Without dead ends: 15916 [2020-10-26 23:56:25,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:56:25,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15916 states. [2020-10-26 23:56:25,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15916 to 15885. [2020-10-26 23:56:25,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15885 states. [2020-10-26 23:56:25,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15885 states to 15885 states and 18800 transitions. [2020-10-26 23:56:25,443 INFO L78 Accepts]: Start accepts. Automaton has 15885 states and 18800 transitions. Word has length 1038 [2020-10-26 23:56:25,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:25,444 INFO L481 AbstractCegarLoop]: Abstraction has 15885 states and 18800 transitions. [2020-10-26 23:56:25,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:56:25,444 INFO L276 IsEmpty]: Start isEmpty. Operand 15885 states and 18800 transitions. [2020-10-26 23:56:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1043 [2020-10-26 23:56:25,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:25,483 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:56:25,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:56:25,484 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:25,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:25,485 INFO L82 PathProgramCache]: Analyzing trace with hash 93745834, now seen corresponding path program 1 times [2020-10-26 23:56:25,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:25,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754127475] [2020-10-26 23:56:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:25,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:26,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:26,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:27,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:30,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:30,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1064 [2020-10-26 23:56:30,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:56:30,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-26 23:56:30,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:56:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-26 23:56:30,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:31,209 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:56:31,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:31,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:31,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:31,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:31,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:31,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:56:31,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:31,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:31,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:31,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:31,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:31,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:31,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:31,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:31,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:56:31,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:31,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:56:31,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:31,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:31,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:56:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:31,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:31,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:31,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:56:31,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:31,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:56:31,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:56:31,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:31,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:56:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:31,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:31,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:31,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:56:31,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-26 23:56:31,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:31,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:31,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:31,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:56:31,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:31,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2020-10-26 23:56:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:31,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:31,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:31,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:56:31,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:31,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:56:31,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:31,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:56:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:31,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2020-10-26 23:56:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:31,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:31,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:31,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:31,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:31,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:56:31,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:31,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:31,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:31,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:31,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:32,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-10-26 23:56:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:32,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:32,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:32,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-26 23:56:32,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:32,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:56:32,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-26 23:56:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:32,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:32,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 700 proven. 376 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2020-10-26 23:56:32,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754127475] [2020-10-26 23:56:32,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:32,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:32,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524506046] [2020-10-26 23:56:32,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:32,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:32,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:32,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:32,810 INFO L87 Difference]: Start difference. First operand 15885 states and 18800 transitions. Second operand 7 states. [2020-10-26 23:56:32,973 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 23:56:38,200 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-26 23:56:41,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:41,645 INFO L93 Difference]: Finished difference Result 38239 states and 45456 transitions. [2020-10-26 23:56:41,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:56:41,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1042 [2020-10-26 23:56:41,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:41,715 INFO L225 Difference]: With dead ends: 38239 [2020-10-26 23:56:41,715 INFO L226 Difference]: Without dead ends: 22360 [2020-10-26 23:56:41,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:56:41,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22360 states. [2020-10-26 23:56:42,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22360 to 21676. [2020-10-26 23:56:42,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21676 states. [2020-10-26 23:56:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21676 states to 21676 states and 25371 transitions. [2020-10-26 23:56:42,222 INFO L78 Accepts]: Start accepts. Automaton has 21676 states and 25371 transitions. Word has length 1042 [2020-10-26 23:56:42,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:42,223 INFO L481 AbstractCegarLoop]: Abstraction has 21676 states and 25371 transitions. [2020-10-26 23:56:42,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:42,223 INFO L276 IsEmpty]: Start isEmpty. Operand 21676 states and 25371 transitions. [2020-10-26 23:56:42,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2020-10-26 23:56:42,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:42,258 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 2, 2, 2, 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] [2020-10-26 23:56:42,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:56:42,258 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:42,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:42,259 INFO L82 PathProgramCache]: Analyzing trace with hash -732511048, now seen corresponding path program 1 times [2020-10-26 23:56:42,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:42,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925245406] [2020-10-26 23:56:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:42,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:42,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:44,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:46,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:46,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1095 [2020-10-26 23:56:47,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:56:47,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-26 23:56:47,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:47,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-26 23:56:47,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:56:47,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:47,714 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:56:47,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:47,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:47,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:47,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:56:47,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:47,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:47,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:47,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:47,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:47,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:47,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:47,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:56:47,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:47,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:47,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:56:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:47,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:56:47,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:47,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:56:47,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:47,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:47,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:56:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:48,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:48,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:48,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:56:48,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:48,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:56:48,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-26 23:56:48,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:48,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-26 23:56:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:48,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:48,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:48,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:56:48,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:48,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:56:48,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:56:48,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:48,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2020-10-26 23:56:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:48,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:48,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:48,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:48,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:48,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:56:48,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:48,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:48,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 820 [2020-10-26 23:56:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:48,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:48,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:48,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-26 23:56:48,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:48,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:56:48,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-26 23:56:48,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:48,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2250 backedges. 565 proven. 136 refuted. 0 times theorem prover too weak. 1549 trivial. 0 not checked. [2020-10-26 23:56:49,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925245406] [2020-10-26 23:56:49,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:49,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:49,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56106329] [2020-10-26 23:56:49,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:49,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:49,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:49,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:49,154 INFO L87 Difference]: Start difference. First operand 21676 states and 25371 transitions. Second operand 7 states. [2020-10-26 23:56:51,039 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:56:54,852 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:56:57,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:57,503 INFO L93 Difference]: Finished difference Result 45412 states and 53621 transitions. [2020-10-26 23:56:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:56:57,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1073 [2020-10-26 23:56:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:57,566 INFO L225 Difference]: With dead ends: 45412 [2020-10-26 23:56:57,567 INFO L226 Difference]: Without dead ends: 23742 [2020-10-26 23:56:57,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:56:57,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23742 states. [2020-10-26 23:56:58,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23742 to 22366. [2020-10-26 23:56:58,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22366 states. [2020-10-26 23:56:58,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22366 states to 22366 states and 26233 transitions. [2020-10-26 23:56:58,100 INFO L78 Accepts]: Start accepts. Automaton has 22366 states and 26233 transitions. Word has length 1073 [2020-10-26 23:56:58,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:58,101 INFO L481 AbstractCegarLoop]: Abstraction has 22366 states and 26233 transitions. [2020-10-26 23:56:58,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:58,101 INFO L276 IsEmpty]: Start isEmpty. Operand 22366 states and 26233 transitions. [2020-10-26 23:56:58,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2020-10-26 23:56:58,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:58,131 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:56:58,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:56:58,131 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:58,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:58,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1641410489, now seen corresponding path program 1 times [2020-10-26 23:56:58,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:58,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020809492] [2020-10-26 23:56:58,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:58,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking...