/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:41:46,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:41:46,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:41:46,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:41:46,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:41:46,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:41:46,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:41:46,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:41:46,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:41:46,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:41:46,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:41:46,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:41:46,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:41:46,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:41:46,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:41:46,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:41:46,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:41:46,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:41:46,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:41:46,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:41:46,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:41:46,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:41:46,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:41:46,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:41:46,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:41:46,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:41:46,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:41:46,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:41:46,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:41:46,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-29 07:41:46,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:41:46,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:41:46,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:41:46,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:41:46,553 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:41:46,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:41:46,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:41:46,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:41:46,558 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:41:46,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:41:46,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:41:46,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:41:46,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:41:46,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:41:46,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:41:46,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:41:46,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:41:46,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:41:46,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:41:46,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:41:46,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:41:46,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:41:46,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:41:46,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:41:46,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:41:46,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:41:46,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:41:46,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:41:46,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:41:46,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:41:46,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:41:46,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:41:46,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:41:46,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:41:46,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:41:46,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:41:46,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:41:46,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:41:46,982 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:41:46,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label12.c [2020-10-29 07:41:47,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5b9b4be1/db2a16538a49445bb6c4538051ff3cef/FLAGe1d0a113e [2020-10-29 07:41:47,977 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:41:47,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label12.c [2020-10-29 07:41:48,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5b9b4be1/db2a16538a49445bb6c4538051ff3cef/FLAGe1d0a113e [2020-10-29 07:41:48,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5b9b4be1/db2a16538a49445bb6c4538051ff3cef [2020-10-29 07:41:48,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:41:48,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:41:48,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:41:48,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:41:48,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:41:48,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:41:48" (1/1) ... [2020-10-29 07:41:48,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cfabece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:48, skipping insertion in model container [2020-10-29 07:41:48,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:41:48" (1/1) ... [2020-10-29 07:41:48,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:41:48,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:41:49,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:41:49,075 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:41:49,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:41:49,407 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:41:49,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:49 WrapperNode [2020-10-29 07:41:49,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:41:49,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:41:49,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:41:49,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:41:49,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:49" (1/1) ... [2020-10-29 07:41:49,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:49" (1/1) ... [2020-10-29 07:41:49,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:49" (1/1) ... [2020-10-29 07:41:49,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:49" (1/1) ... [2020-10-29 07:41:49,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:49" (1/1) ... [2020-10-29 07:41:49,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:49" (1/1) ... [2020-10-29 07:41:49,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:49" (1/1) ... [2020-10-29 07:41:49,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:41:49,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:41:49,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:41:49,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:41:49,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:41:49,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:41:49,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:41:49,744 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:41:49,744 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:41:49,744 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:41:49,744 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:41:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:41:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:41:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:41:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:41:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:41:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:41:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:41:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:41:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:41:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:41:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:41:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:41:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:41:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:41:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:41:53,406 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:41:53,407 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:41:53,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:41:53 BoogieIcfgContainer [2020-10-29 07:41:53,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:41:53,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:41:53,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:41:53,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:41:53,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:41:48" (1/3) ... [2020-10-29 07:41:53,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236e9207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:41:53, skipping insertion in model container [2020-10-29 07:41:53,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:49" (2/3) ... [2020-10-29 07:41:53,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236e9207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:41:53, skipping insertion in model container [2020-10-29 07:41:53,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:41:53" (3/3) ... [2020-10-29 07:41:53,425 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label12.c [2020-10-29 07:41:53,437 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:41:53,444 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:41:53,457 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:41:53,504 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:41:53,504 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:41:53,505 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:41:53,505 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:41:53,505 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:41:53,505 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:41:53,505 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:41:53,505 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:41:53,532 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:41:53,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 07:41:53,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:53,543 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, 1, 1, 1] [2020-10-29 07:41:53,543 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:53,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:53,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1602309305, now seen corresponding path program 1 times [2020-10-29 07:41:53,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:53,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773640825] [2020-10-29 07:41:53,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:53,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:54,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:54,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:41:54,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:54,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-29 07:41:54,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:54,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:41:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:41:54,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 07:41:54,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:41:54,672 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:41:54,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:54,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:54,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:54,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:54,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:54,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:41:54,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:54,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:54,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:54,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:54,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:41:54,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:41:54,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773640825] [2020-10-29 07:41:54,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:41:54,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:41:54,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086854147] [2020-10-29 07:41:54,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:41:54,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:54,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:41:54,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:41:54,782 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-29 07:42:05,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:05,620 INFO L93 Difference]: Finished difference Result 1530 states and 2802 transitions. [2020-10-29 07:42:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:42:05,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-29 07:42:05,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:05,658 INFO L225 Difference]: With dead ends: 1530 [2020-10-29 07:42:05,658 INFO L226 Difference]: Without dead ends: 1021 [2020-10-29 07:42:05,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:05,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-10-29 07:42:05,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1015. [2020-10-29 07:42:05,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-29 07:42:05,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1537 transitions. [2020-10-29 07:42:05,819 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1537 transitions. Word has length 66 [2020-10-29 07:42:05,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:05,819 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1537 transitions. [2020-10-29 07:42:05,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:42:05,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1537 transitions. [2020-10-29 07:42:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-29 07:42:05,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:05,831 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, 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] [2020-10-29 07:42:05,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:42:05,831 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:05,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:05,832 INFO L82 PathProgramCache]: Analyzing trace with hash 150182447, now seen corresponding path program 1 times [2020-10-29 07:42:05,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:05,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735471409] [2020-10-29 07:42:05,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:05,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:06,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:07,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:07,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:42:07,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:42:07,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1636 [2020-10-29 07:42:07,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:07,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:07,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:42:07,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:42:07,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 07:42:07,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:42:07,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:07,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:07,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:07,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:07,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:07,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:42:07,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:07,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:07,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:07,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:07,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:42:07,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 07:42:07,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:07,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:08,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:08,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 07:42:08,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:08,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-29 07:42:08,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:08,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:08,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:08,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:08,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 07:42:08,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:42:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:42:08,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735471409] [2020-10-29 07:42:08,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:42:08,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:42:08,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809457258] [2020-10-29 07:42:08,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:42:08,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:08,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:42:08,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:08,321 INFO L87 Difference]: Start difference. First operand 1015 states and 1537 transitions. Second operand 7 states. [2020-10-29 07:42:17,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:17,226 INFO L93 Difference]: Finished difference Result 3004 states and 4616 transitions. [2020-10-29 07:42:17,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:42:17,228 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-10-29 07:42:17,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:17,241 INFO L225 Difference]: With dead ends: 3004 [2020-10-29 07:42:17,242 INFO L226 Difference]: Without dead ends: 1995 [2020-10-29 07:42:17,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:42:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2020-10-29 07:42:17,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1961. [2020-10-29 07:42:17,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-10-29 07:42:17,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2619 transitions. [2020-10-29 07:42:17,340 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2619 transitions. Word has length 182 [2020-10-29 07:42:17,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:17,343 INFO L481 AbstractCegarLoop]: Abstraction has 1961 states and 2619 transitions. [2020-10-29 07:42:17,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:17,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2619 transitions. [2020-10-29 07:42:17,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-29 07:42:17,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:17,360 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:17,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:42:17,360 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:17,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:17,361 INFO L82 PathProgramCache]: Analyzing trace with hash 99505864, now seen corresponding path program 1 times [2020-10-29 07:42:17,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:17,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405833619] [2020-10-29 07:42:17,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:17,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:17,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:17,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:18,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:19,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:19,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:21,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:22,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:22,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-29 07:42:22,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 07:42:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 07:42:22,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:22,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:42:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:42:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 07:42:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:42:22,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:22,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:22,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:22,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:22,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:22,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:42:22,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:22,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:42:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:22,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:22,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:22,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:22,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:42:22,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:22,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 07:42:22,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:22,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:42:22,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:22,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:42:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:22,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:23,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:23,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:23,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:23,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 07:42:23,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:42:23,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-29 07:42:23,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:23,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:23,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:23,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:23,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 07:42:23,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 117 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:42:23,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405833619] [2020-10-29 07:42:23,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:23,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:42:23,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465075292] [2020-10-29 07:42:23,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:42:23,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:23,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:42:23,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:42:23,834 INFO L87 Difference]: Start difference. First operand 1961 states and 2619 transitions. Second operand 8 states. [2020-10-29 07:42:33,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:33,029 INFO L93 Difference]: Finished difference Result 5534 states and 7582 transitions. [2020-10-29 07:42:33,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:42:33,030 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 318 [2020-10-29 07:42:33,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:33,051 INFO L225 Difference]: With dead ends: 5534 [2020-10-29 07:42:33,051 INFO L226 Difference]: Without dead ends: 3579 [2020-10-29 07:42:33,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:42:33,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2020-10-29 07:42:33,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3533. [2020-10-29 07:42:33,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3533 states. [2020-10-29 07:42:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4456 transitions. [2020-10-29 07:42:33,189 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4456 transitions. Word has length 318 [2020-10-29 07:42:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:33,191 INFO L481 AbstractCegarLoop]: Abstraction has 3533 states and 4456 transitions. [2020-10-29 07:42:33,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:42:33,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4456 transitions. [2020-10-29 07:42:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-29 07:42:33,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:33,198 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:33,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:42:33,199 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:33,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:33,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1137157772, now seen corresponding path program 1 times [2020-10-29 07:42:33,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:33,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797088197] [2020-10-29 07:42:33,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:33,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:33,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:38,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:38,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-29 07:42:38,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:42:38,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 07:42:38,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:38,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:38,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:42:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:42:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:42:38,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:42:38,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:38,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:38,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:38,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:38,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:42:38,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:38,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:38,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:42:38,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:38,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:38,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:38,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:38,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:42:38,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:38,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-29 07:42:38,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:38,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:38,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:38,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:38,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:42:38,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:39,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:42:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:39,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:39,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:39,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:42:39,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:39,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:42:39,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:39,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:39,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:39,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:42:39,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:39,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:39,844 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 116 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:42:39,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797088197] [2020-10-29 07:42:39,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:39,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:42:39,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686619508] [2020-10-29 07:42:39,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:42:39,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:39,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:42:39,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:39,847 INFO L87 Difference]: Start difference. First operand 3533 states and 4456 transitions. Second operand 7 states. [2020-10-29 07:42:49,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:49,224 INFO L93 Difference]: Finished difference Result 7415 states and 9319 transitions. [2020-10-29 07:42:49,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:42:49,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 346 [2020-10-29 07:42:49,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:49,254 INFO L225 Difference]: With dead ends: 7415 [2020-10-29 07:42:49,254 INFO L226 Difference]: Without dead ends: 3888 [2020-10-29 07:42:49,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:42:49,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2020-10-29 07:42:49,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3866. [2020-10-29 07:42:49,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3866 states. [2020-10-29 07:42:49,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 4814 transitions. [2020-10-29 07:42:49,389 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 4814 transitions. Word has length 346 [2020-10-29 07:42:49,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:49,390 INFO L481 AbstractCegarLoop]: Abstraction has 3866 states and 4814 transitions. [2020-10-29 07:42:49,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:49,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 4814 transitions. [2020-10-29 07:42:49,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-10-29 07:42:49,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:49,400 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:49,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:42:49,401 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:49,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:49,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1479142837, now seen corresponding path program 1 times [2020-10-29 07:42:49,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:49,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975042287] [2020-10-29 07:42:49,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:49,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:52,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:52,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-29 07:42:52,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:42:52,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2876 [2020-10-29 07:42:52,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:52,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-29 07:42:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:42:52,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:52,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:52,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:52,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:52,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:52,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:42:52,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:52,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:52,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:52,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:52,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:52,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:52,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:52,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:52,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:52,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:42:52,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 07:42:52,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:52,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:52,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:52,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:42:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:52,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:52,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:52,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:42:52,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:52,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 07:42:52,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:52,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:52,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:42:52,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-29 07:42:53,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975042287] [2020-10-29 07:42:53,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:53,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:42:53,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403335014] [2020-10-29 07:42:53,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:42:53,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:53,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:42:53,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:42:53,132 INFO L87 Difference]: Start difference. First operand 3866 states and 4814 transitions. Second operand 5 states. [2020-10-29 07:43:02,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:02,559 INFO L93 Difference]: Finished difference Result 9930 states and 12781 transitions. [2020-10-29 07:43:02,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:43:02,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 420 [2020-10-29 07:43:02,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:02,599 INFO L225 Difference]: With dead ends: 9930 [2020-10-29 07:43:02,599 INFO L226 Difference]: Without dead ends: 6377 [2020-10-29 07:43:02,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:43:02,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6377 states. [2020-10-29 07:43:02,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6377 to 6055. [2020-10-29 07:43:02,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6055 states. [2020-10-29 07:43:02,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 7505 transitions. [2020-10-29 07:43:02,796 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 7505 transitions. Word has length 420 [2020-10-29 07:43:02,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:02,797 INFO L481 AbstractCegarLoop]: Abstraction has 6055 states and 7505 transitions. [2020-10-29 07:43:02,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:43:02,797 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 7505 transitions. [2020-10-29 07:43:02,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2020-10-29 07:43:02,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:02,815 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:02,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:43:02,816 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:02,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:02,816 INFO L82 PathProgramCache]: Analyzing trace with hash -44886875, now seen corresponding path program 1 times [2020-10-29 07:43:02,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:02,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189404006] [2020-10-29 07:43:02,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:03,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:03,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:04,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:05,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:08,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:08,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-29 07:43:08,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:43:08,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 07:43:08,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:08,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:43:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:43:08,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:08,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:08,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:08,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:08,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:08,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:08,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:43:08,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:08,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:08,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:08,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:08,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:08,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:08,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:43:08,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:08,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 07:43:08,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:08,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:08,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:08,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:08,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:43:08,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:08,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:43:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:08,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:08,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:43:08,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:08,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 07:43:08,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:08,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:08,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:08,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:43:08,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:08,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 07:43:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:08,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:08,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:08,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 07:43:08,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:08,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 07:43:08,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:08,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-29 07:43:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:08,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 255 proven. 79 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-29 07:43:09,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189404006] [2020-10-29 07:43:09,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:09,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:43:09,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892194721] [2020-10-29 07:43:09,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:09,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:09,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:09,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:09,112 INFO L87 Difference]: Start difference. First operand 6055 states and 7505 transitions. Second operand 7 states. [2020-10-29 07:43:20,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:20,129 INFO L93 Difference]: Finished difference Result 14406 states and 18238 transitions. [2020-10-29 07:43:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:43:20,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 518 [2020-10-29 07:43:20,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:20,173 INFO L225 Difference]: With dead ends: 14406 [2020-10-29 07:43:20,173 INFO L226 Difference]: Without dead ends: 8664 [2020-10-29 07:43:20,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:43:20,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8664 states. [2020-10-29 07:43:20,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8664 to 8641. [2020-10-29 07:43:20,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8641 states. [2020-10-29 07:43:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8641 states to 8641 states and 10500 transitions. [2020-10-29 07:43:20,415 INFO L78 Accepts]: Start accepts. Automaton has 8641 states and 10500 transitions. Word has length 518 [2020-10-29 07:43:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:20,416 INFO L481 AbstractCegarLoop]: Abstraction has 8641 states and 10500 transitions. [2020-10-29 07:43:20,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:20,417 INFO L276 IsEmpty]: Start isEmpty. Operand 8641 states and 10500 transitions. [2020-10-29 07:43:20,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2020-10-29 07:43:20,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:20,442 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:20,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:43:20,442 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:20,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:20,444 INFO L82 PathProgramCache]: Analyzing trace with hash 736508673, now seen corresponding path program 1 times [2020-10-29 07:43:20,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:20,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036832726] [2020-10-29 07:43:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:20,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:20,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:20,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:21,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:22,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:25,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:25,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:25,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-29 07:43:25,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:43:25,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 07:43:25,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:25,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:43:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:43:25,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:25,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:25,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:25,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:25,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:25,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:25,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:43:25,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:25,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:25,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:25,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:25,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:25,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:25,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:43:25,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:25,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 07:43:25,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:25,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:43:25,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:25,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:43:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:25,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:26,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:26,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:43:26,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:26,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-29 07:43:26,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:26,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:43:26,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:26,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:43:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:26,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:26,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:26,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:43:26,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:26,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 07:43:26,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:26,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:43:26,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:26,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:26,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-29 07:43:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:26,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:26,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:26,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 07:43:26,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:26,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 07:43:26,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:26,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:26,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-29 07:43:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:26,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 332 proven. 174 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-10-29 07:43:26,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036832726] [2020-10-29 07:43:26,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:26,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:43:26,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436621144] [2020-10-29 07:43:26,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:26,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:26,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:26,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:26,882 INFO L87 Difference]: Start difference. First operand 8641 states and 10500 transitions. Second operand 7 states. [2020-10-29 07:43:40,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:40,664 INFO L93 Difference]: Finished difference Result 22630 states and 28294 transitions. [2020-10-29 07:43:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:43:40,665 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 539 [2020-10-29 07:43:40,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:40,712 INFO L225 Difference]: With dead ends: 22630 [2020-10-29 07:43:40,712 INFO L226 Difference]: Without dead ends: 13658 [2020-10-29 07:43:40,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:43:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13658 states. [2020-10-29 07:43:40,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13658 to 11495. [2020-10-29 07:43:40,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11495 states. [2020-10-29 07:43:41,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11495 states to 11495 states and 13433 transitions. [2020-10-29 07:43:41,009 INFO L78 Accepts]: Start accepts. Automaton has 11495 states and 13433 transitions. Word has length 539 [2020-10-29 07:43:41,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:41,009 INFO L481 AbstractCegarLoop]: Abstraction has 11495 states and 13433 transitions. [2020-10-29 07:43:41,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:41,010 INFO L276 IsEmpty]: Start isEmpty. Operand 11495 states and 13433 transitions. [2020-10-29 07:43:41,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2020-10-29 07:43:41,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:41,021 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:41,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:43:41,022 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:41,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:41,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1572742969, now seen corresponding path program 1 times [2020-10-29 07:43:41,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:41,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004700315] [2020-10-29 07:43:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:41,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:42,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:44,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:45,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:46,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:46,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 566 [2020-10-29 07:43:46,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:43:46,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 07:43:46,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:46,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:43:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-29 07:43:46,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:46,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:46,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:46,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:46,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:46,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:43:46,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:46,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:46,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:46,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:46,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:46,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:43:46,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:46,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 07:43:46,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:46,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:46,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:46,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:46,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:43:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:46,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:46,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:46,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:43:46,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:46,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:43:46,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:46,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:43:46,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:46,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:43:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:46,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:46,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:46,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:46,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 07:43:46,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:43:46,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 07:43:46,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:46,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:46,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:43:46,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 182 proven. 3 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-10-29 07:43:47,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004700315] [2020-10-29 07:43:47,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:47,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:43:47,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906335269] [2020-10-29 07:43:47,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:43:47,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:47,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:43:47,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:43:47,131 INFO L87 Difference]: Start difference. First operand 11495 states and 13433 transitions. Second operand 6 states. [2020-10-29 07:43:57,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:57,243 INFO L93 Difference]: Finished difference Result 29466 states and 35697 transitions. [2020-10-29 07:43:57,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:43:57,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 550 [2020-10-29 07:43:57,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:57,325 INFO L225 Difference]: With dead ends: 29466 [2020-10-29 07:43:57,326 INFO L226 Difference]: Without dead ends: 18284 [2020-10-29 07:43:57,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:43:57,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18284 states. [2020-10-29 07:43:57,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18284 to 16745. [2020-10-29 07:43:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16745 states. [2020-10-29 07:43:57,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16745 states to 16745 states and 20027 transitions. [2020-10-29 07:43:57,816 INFO L78 Accepts]: Start accepts. Automaton has 16745 states and 20027 transitions. Word has length 550 [2020-10-29 07:43:57,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:57,817 INFO L481 AbstractCegarLoop]: Abstraction has 16745 states and 20027 transitions. [2020-10-29 07:43:57,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:43:57,817 INFO L276 IsEmpty]: Start isEmpty. Operand 16745 states and 20027 transitions. [2020-10-29 07:43:57,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2020-10-29 07:43:57,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:57,842 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:57,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:43:57,842 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:57,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:57,843 INFO L82 PathProgramCache]: Analyzing trace with hash -2111664791, now seen corresponding path program 1 times [2020-10-29 07:43:57,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:57,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852591602] [2020-10-29 07:43:57,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:58,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:59,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:03,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:03,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 641 [2020-10-29 07:44:03,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:44:03,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 07:44:03,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:03,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:44:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:44:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-29 07:44:03,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:03,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:03,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:03,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:03,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:03,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:03,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:44:03,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:03,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:03,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:03,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:03,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:03,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:03,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:44:03,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 07:44:03,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:03,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:03,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:03,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:44:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:03,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:03,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:03,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:44:03,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:03,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 07:44:03,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:03,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:44:03,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:03,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:44:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:03,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:03,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:03,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-29 07:44:03,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:03,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 07:44:03,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:03,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-29 07:44:03,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 397 proven. 59 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 07:44:04,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852591602] [2020-10-29 07:44:04,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:04,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:44:04,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908154905] [2020-10-29 07:44:04,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:44:04,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:04,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:44:04,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:44:04,201 INFO L87 Difference]: Start difference. First operand 16745 states and 20027 transitions. Second operand 6 states. [2020-10-29 07:44:12,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:12,084 INFO L93 Difference]: Finished difference Result 39534 states and 48230 transitions. [2020-10-29 07:44:12,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:44:12,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 625 [2020-10-29 07:44:12,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:12,170 INFO L225 Difference]: With dead ends: 39534 [2020-10-29 07:44:12,170 INFO L226 Difference]: Without dead ends: 23102 [2020-10-29 07:44:12,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:44:12,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23102 states. [2020-10-29 07:44:12,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23102 to 23049. [2020-10-29 07:44:12,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23049 states. [2020-10-29 07:44:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23049 states to 23049 states and 27685 transitions. [2020-10-29 07:44:12,745 INFO L78 Accepts]: Start accepts. Automaton has 23049 states and 27685 transitions. Word has length 625 [2020-10-29 07:44:12,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:12,746 INFO L481 AbstractCegarLoop]: Abstraction has 23049 states and 27685 transitions. [2020-10-29 07:44:12,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:44:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 23049 states and 27685 transitions. [2020-10-29 07:44:12,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2020-10-29 07:44:12,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:12,929 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:12,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:44:12,930 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:12,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:12,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1370465247, now seen corresponding path program 1 times [2020-10-29 07:44:12,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:12,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66648663] [2020-10-29 07:44:12,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:13,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:13,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:15,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:16,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:18,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:18,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 666 [2020-10-29 07:44:18,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:44:18,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 07:44:18,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:18,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:18,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:44:18,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:44:18,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-29 07:44:18,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:18,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:18,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:18,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:18,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:18,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:18,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:44:18,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:18,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:18,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:18,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:18,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:18,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:18,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:18,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:18,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:18,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:44:18,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:18,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 07:44:18,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:18,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:18,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:18,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:44:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:18,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:18,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:44:18,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:18,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:44:18,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:18,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:18,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:18,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:18,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:44:18,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:18,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:44:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:18,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:18,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:18,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 07:44:18,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:18,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 07:44:18,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:18,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 07:44:18,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:18,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2020-10-29 07:44:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:18,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:19,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:19,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 07:44:19,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:19,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 07:44:19,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:19,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:19,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:19,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:19,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 07:44:19,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 617 proven. 4 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2020-10-29 07:44:19,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66648663] [2020-10-29 07:44:19,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:19,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:44:19,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687716640] [2020-10-29 07:44:19,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:19,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:19,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:19,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:19,299 INFO L87 Difference]: Start difference. First operand 23049 states and 27685 transitions. Second operand 7 states. [2020-10-29 07:44:33,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:33,843 INFO L93 Difference]: Finished difference Result 54495 states and 66569 transitions. [2020-10-29 07:44:33,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:44:33,845 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 648 [2020-10-29 07:44:33,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:33,932 INFO L225 Difference]: With dead ends: 54495 [2020-10-29 07:44:33,932 INFO L226 Difference]: Without dead ends: 31141 [2020-10-29 07:44:33,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:44:34,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31141 states. [2020-10-29 07:44:34,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31141 to 28362. [2020-10-29 07:44:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28362 states. [2020-10-29 07:44:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28362 states to 28362 states and 33957 transitions. [2020-10-29 07:44:34,788 INFO L78 Accepts]: Start accepts. Automaton has 28362 states and 33957 transitions. Word has length 648 [2020-10-29 07:44:34,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:34,789 INFO L481 AbstractCegarLoop]: Abstraction has 28362 states and 33957 transitions. [2020-10-29 07:44:34,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:34,789 INFO L276 IsEmpty]: Start isEmpty. Operand 28362 states and 33957 transitions. [2020-10-29 07:44:34,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2020-10-29 07:44:34,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:34,828 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:34,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:44:34,828 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:34,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:34,833 INFO L82 PathProgramCache]: Analyzing trace with hash -38781965, now seen corresponding path program 1 times [2020-10-29 07:44:34,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:34,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82399069] [2020-10-29 07:44:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:35,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:35,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:38,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:38,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 791 [2020-10-29 07:44:38,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:38,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3903 [2020-10-29 07:44:38,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:38,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:38,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:38,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:44:38,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-29 07:44:38,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:39,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:39,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:39,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:39,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:39,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:39,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:44:39,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:39,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:39,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:39,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:39,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:39,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:39,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:44:39,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:39,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 07:44:39,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:39,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:44:39,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:39,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:44:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:39,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:39,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:39,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:44:39,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:39,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 07:44:39,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:39,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:39,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-29 07:44:39,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:40,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-10-29 07:44:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:40,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:40,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:40,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:44:40,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:40,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:44:40,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:40,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:40,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:40,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 07:44:40,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:40,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:40,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-10-29 07:44:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:40,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:40,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 07:44:40,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:40,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:44:40,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:40,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:40,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:40,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-29 07:44:40,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:40,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 430 proven. 234 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2020-10-29 07:44:41,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82399069] [2020-10-29 07:44:41,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:41,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:44:41,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692159595] [2020-10-29 07:44:41,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:44:41,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:41,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:44:41,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:44:41,200 INFO L87 Difference]: Start difference. First operand 28362 states and 33957 transitions. Second operand 8 states. [2020-10-29 07:44:56,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:56,713 INFO L93 Difference]: Finished difference Result 59897 states and 71819 transitions. [2020-10-29 07:44:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 07:44:56,715 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 773 [2020-10-29 07:44:56,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:56,803 INFO L225 Difference]: With dead ends: 59897 [2020-10-29 07:44:56,804 INFO L226 Difference]: Without dead ends: 31848 [2020-10-29 07:44:56,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:44:56,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31848 states. [2020-10-29 07:44:57,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31848 to 31509. [2020-10-29 07:44:57,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31509 states. [2020-10-29 07:44:57,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31509 states to 31509 states and 37462 transitions. [2020-10-29 07:44:57,512 INFO L78 Accepts]: Start accepts. Automaton has 31509 states and 37462 transitions. Word has length 773 [2020-10-29 07:44:57,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:57,513 INFO L481 AbstractCegarLoop]: Abstraction has 31509 states and 37462 transitions. [2020-10-29 07:44:57,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:44:57,513 INFO L276 IsEmpty]: Start isEmpty. Operand 31509 states and 37462 transitions. [2020-10-29 07:44:57,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2020-10-29 07:44:57,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:57,554 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:57,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:44:57,554 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:57,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:57,555 INFO L82 PathProgramCache]: Analyzing trace with hash 484293995, now seen corresponding path program 1 times [2020-10-29 07:44:57,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:57,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004650053] [2020-10-29 07:44:57,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:57,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:59,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:59,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 803 [2020-10-29 07:44:59,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:59,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2103 [2020-10-29 07:44:59,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:59,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:44:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 578 [2020-10-29 07:44:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-29 07:44:59,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:00,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:00,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:00,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:00,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:00,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:45:00,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:00,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:00,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:00,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:00,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:00,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:45:00,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:45:00,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:00,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:00,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:45:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:00,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:00,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:00,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:45:00,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:00,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 07:45:00,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:00,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:00,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:00,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:00,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:00,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:00,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-29 07:45:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:00,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:00,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:00,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:45:00,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:00,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 07:45:00,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:00,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:45:00,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:00,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-29 07:45:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:00,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:00,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:00,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 07:45:00,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:00,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 07:45:00,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:00,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:45:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 07:45:00,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 567 proven. 60 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2020-10-29 07:45:01,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004650053] [2020-10-29 07:45:01,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:01,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:45:01,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831355973] [2020-10-29 07:45:01,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:45:01,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:01,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:45:01,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:45:01,185 INFO L87 Difference]: Start difference. First operand 31509 states and 37462 transitions. Second operand 8 states. [2020-10-29 07:45:17,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:17,205 INFO L93 Difference]: Finished difference Result 77611 states and 91990 transitions. [2020-10-29 07:45:17,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:45:17,207 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 785 [2020-10-29 07:45:17,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:17,312 INFO L225 Difference]: With dead ends: 77611 [2020-10-29 07:45:17,313 INFO L226 Difference]: Without dead ends: 46415 [2020-10-29 07:45:17,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:45:17,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46415 states. [2020-10-29 07:45:18,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46415 to 42414. [2020-10-29 07:45:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42414 states. [2020-10-29 07:45:18,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42414 states to 42414 states and 49791 transitions. [2020-10-29 07:45:18,199 INFO L78 Accepts]: Start accepts. Automaton has 42414 states and 49791 transitions. Word has length 785 [2020-10-29 07:45:18,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:18,200 INFO L481 AbstractCegarLoop]: Abstraction has 42414 states and 49791 transitions. [2020-10-29 07:45:18,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:45:18,200 INFO L276 IsEmpty]: Start isEmpty. Operand 42414 states and 49791 transitions. [2020-10-29 07:45:18,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2020-10-29 07:45:18,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:18,232 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:18,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:45:18,233 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:18,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:18,233 INFO L82 PathProgramCache]: Analyzing trace with hash -914440017, now seen corresponding path program 1 times [2020-10-29 07:45:18,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:18,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027999907] [2020-10-29 07:45:18,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:18,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:19,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:19,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 844 [2020-10-29 07:45:19,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:19,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1222 [2020-10-29 07:45:19,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:19,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 578 [2020-10-29 07:45:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 07:45:19,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:19,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:19,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:19,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:19,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:19,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:19,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:45:19,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:19,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:19,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:19,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:19,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:19,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:19,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:19,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:19,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:19,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:45:19,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:19,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:45:19,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:19,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:19,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:19,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:19,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:19,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:20,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:45:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:20,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:20,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:20,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:45:20,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:20,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:45:20,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:20,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:20,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:20,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-29 07:45:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:20,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:20,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:20,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:45:20,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:20,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 07:45:20,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:20,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:20,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:20,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:20,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:45:20,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:20,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-29 07:45:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:20,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:20,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:20,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 07:45:20,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:20,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 07:45:20,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:20,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:20,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:20,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:20,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-29 07:45:20,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 705 proven. 2 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2020-10-29 07:45:21,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027999907] [2020-10-29 07:45:21,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:21,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:45:21,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676518357] [2020-10-29 07:45:21,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:21,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:21,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:21,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:21,162 INFO L87 Difference]: Start difference. First operand 42414 states and 49791 transitions. Second operand 7 states.